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Sokolov SG, Khasanov FK, Vlasenkov SA. Phylogenetic position of Ancyrocephalus (sensu lato) curtus Achmerov, 1952 (Monopisthocotylea, Dactylogyridae), a parasite of fish Perccottus glenii Dybowski, 1877(Gobiiformes: Odontobutidae). J Helminthol 2024; 98:e37. [PMID: 38706044 DOI: 10.1017/s0022149x24000270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
The genus Ancyrocephalus sensu lato is a large assemblage of species of dactylogyrid monopisthocotyleans without clear taxonomic boundaries. Despite an urgent need for revision, only three representatives of this taxon have been molecularly characterised so far. We found specimens of Ancyrocephalus curtus, a previously non-genotyped species, in gills of Perccottus glenii caught in the River Syumnyur, Amur Basin, Russia. The aim of this study was to assess the phylogenetic position of this parasite using partial sequences of 28S rRNA gene. In the phylogenetic tree, A. curtus appeared as a sister taxon to the dactylogyrine genus Gobioecetes. The new molecular evidence supports the hypothesis about the non-monophyletic status of Ancyrocephalus sensu lato.
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Affiliation(s)
- Sergey G Sokolov
- A.N. Severtsov Institute of Ecology and Evolution, RAS, Leninsky Prospect 33, Moscow, 119071Russia
| | - Fuat K Khasanov
- A.N. Severtsov Institute of Ecology and Evolution, RAS, Leninsky Prospect 33, Moscow, 119071Russia
| | - Sergei A Vlasenkov
- A.N. Severtsov Institute of Ecology and Evolution, RAS, Leninsky Prospect 33, Moscow, 119071Russia
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Wan Sajiri WMH, Székely C, Molnár K, Kjeldgaard-Nintemann S, Kania PW, Buchmann K, Sellyei B. Molecular and SEM studies on Thaparocleidus vistulensis (Siwak, 1932) (Monopisthocotyla, Ancylodiscoididae). Sci Rep 2024; 14:10292. [PMID: 38704408 DOI: 10.1038/s41598-024-61032-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 04/30/2024] [Indexed: 05/06/2024] Open
Abstract
Presenting new molecular and scanning electron microscope (SEM) features, this study gives additional data to the better knowledge of Thaparocleidus vistulensis (Siwak, 1932) (Monopisthocotyla, Ancylodiscoididae), a parasite of the European catfish Silurus glanis Linnaeus, 1758 (Siluriformes, Siluridae) cultured in a commercial fish farm in Hungary. In addition, notes on the early development of sclerotized anchors are also provided. The main morphological difference of T. vistulensis compared to other congeneric species is associated with the male copulatory organ, which exhibits 5-7 loops in the middle of the penis length and a long open V-shaped sclerotized accessory piece, dividing terminally into two parts, securing the terminal part of the penis tube. The present study provides for the first time molecular characterization data based on the 2694 bp long nucleotide sequence of rDNA (ITS1, 5.8S, ITS2, and flanked with partial 18S and partial 28S) submitted in GenBank with the accession number OR916383. A phylogenetic tree based on ITS1 sequences supports a well-defined clade including T. vistulensis, forming a sister group with T. siluri, a species-specific monopisthocotylan parasite to S. glanis. The morphological characterization of T. vistulensis, especially for the male copulatory organ, together with the molecular data in the present study, extends knowledge about this monopisthocotylan species and provides new information for future phylogeny studies.
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Affiliation(s)
- Wan Muhammad Hazim Wan Sajiri
- HUN-REN Veterinary Medical Research Institute, 21, Hungária Krt, 1143, Budapest, Hungary
- Doctoral School of Animal Biotechnology and Animal Science (Agricultural Science), Hungarian University of Agriculture and Life Sciences, 1. Páter Károly Str, 2100, Gödöllő, Hungary
| | - Csaba Székely
- HUN-REN Veterinary Medical Research Institute, 21, Hungária Krt, 1143, Budapest, Hungary
| | - Kálmán Molnár
- HUN-REN Veterinary Medical Research Institute, 21, Hungária Krt, 1143, Budapest, Hungary
| | | | - Per Walter Kania
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Kurt Buchmann
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Boglárka Sellyei
- HUN-REN Veterinary Medical Research Institute, 21, Hungária Krt, 1143, Budapest, Hungary.
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Biswal D, Mirdha BR. Tiny trematode bobbing its head. Clin Microbiol Infect 2024; 30:619-620. [PMID: 38266709 DOI: 10.1016/j.cmi.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/25/2023] [Accepted: 01/14/2024] [Indexed: 01/26/2024]
Affiliation(s)
- Debasish Biswal
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Bijay R Mirdha
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India.
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Atopkin DM, Ivashko YI, Izrailskaia AV, Tatonova YV, Besprozvannykh VV. Morphological and molecular data on Pseudozoogonoides ugui Shimazu, 1974 (Digenea: Microphalloidea: Zoogonidae) ex Pseudaspius hakonensis (Günther, 1877) and taxonomic problems in Zoogoninae genera. J Helminthol 2024; 98:e36. [PMID: 38659305 DOI: 10.1017/s0022149x24000233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
New morphological and molecular data were generated for trematodes recovered from the intestines of the fish Pseudaspius hakonensis from two locations in the south of the Russian Far East. Morphologically, these trematodes are identical to Pseudozoogonoides ugui (Microphalloidea: Zoogonidae) from Japan. According to results of phylogenetic analysis based on 28S rDNA sequence data, P. ugui was closely related to Zoogonoides viviparus, and P. subaequiporus appears as a sister taxon to these two species. Genetic distance values, calculated based on both 28S rDNA and ITS2 rDNA, between P. ugui and Z. viviparus represents an interspecific differentiation level. Our results have an ambiguous explanation, indicating that the implication of the presence of one or two compact vitellarial aggregations for the differentiation of Zoogonoides and Pseudozoogonoides should be reconsidered or that our results open up the question of the taxonomical status of trematodes previously denoted as Z. viviparus and P. subaequiporus.
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Affiliation(s)
- D M Atopkin
- Federal Scientific Center of East Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690022, Vladivostok, Russia
| | - Y I Ivashko
- Federal Scientific Center of East Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690022, Vladivostok, Russia
| | - A V Izrailskaia
- Federal Scientific Center of East Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690022, Vladivostok, Russia
| | - Y V Tatonova
- Federal Scientific Center of East Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690022, Vladivostok, Russia
| | - V V Besprozvannykh
- Federal Scientific Center of East Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690022, Vladivostok, Russia
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Cruces C, Chero J, Ñacari LA, De Celis VR, Simões R, Luque JL. Two new Neotetraonchus species (Dactylogyridea, Dactylogyridae) parasitising the Peruvian sea catfish Galeichthys peruvianus (Siluriformes, Ariidae), including molecular data. J Helminthol 2024; 98:e35. [PMID: 38651383 DOI: 10.1017/s0022149x24000208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
As part of a parasitological survey, several specimens of two new monopisthocotylean species, Neotetraonchus celsomanueli sp. nov. and N.peruvianus sp. nov. (Dactylogyridea, Dactylogyridae), were collected from the gill filaments of the Peruvian sea catfish Galeichthys peruvianus (Siluriformes, Ariidae) off Puerto Pizarro, Tumbes region, Peru. Neotetraonchus celsomanueli sp. nov. is characterised by an MCO with a T-shaped distal end and an accessory piece that is ribbed and expanded proximally with a worm-shaped termination. Neotetraonchus peruvianus sp. nov. is typified by its MCO, which has a sledgehammer-shaped distal end and an accessory piece with a claw-shaped distal end. Additionally, N.peruvianus sp. nov. is characterised by its jellyfish-shaped onchium. A partial 28S rDNA sequence was obtained from N.celsomanueli sp. nov., and a phylogenetic analysis was conducted. This analysis revealed the phylogenetic position of Neotetraonchus celsomanueli sp. nov. within a clade comprising monopisthocotylean parasites of diadromous and marine ariid catfishes, including Hamatopeduncularia spp., Chauhanellus spp., Thysanotohaptor Kritsky, Shameem, Kumari & Krishnaveni, , and Neocalceostomoides spinivaginalis Lim, 1995. This finding brings the number of known Neotetraonchus species to seven and represents the first described Neotetraonchus species infecting marine catfishes from Peru.
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Affiliation(s)
- C Cruces
- Programa de Pós-Graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
- Laboratorio de Zoología de Invertebrados, Departamento Académico de Zoología, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos (UNMSM), Av. Universitaria cruce con Av. Venezuela cuadra 34, Lima, Peru
| | - J Chero
- Laboratorio de Zoología de Invertebrados, Departamento Académico de Zoología, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos (UNMSM), Av. Universitaria cruce con Av. Venezuela cuadra 34, Lima, Peru
| | - L A Ñacari
- Laboratorio de Ecología y Evolución de Parásitos, Facultad de Ciencias del Mar y Recursos Biológicos, Universidad de Antofagasta, 601 Angamos, Antofagasta, Chile
| | - V R De Celis
- Laboratorio de Genómica y Biología Evolutiva, Instituto de Ciencias y Tecnología, Universidad Ricardo Palma (URP), Av. Alfredo Benavides 5440 Santiago de Surco, Lima, Peru
| | - R Simões
- Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
| | - J L Luque
- Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
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Soares GB, Adriano EA, Domingues MV, Rodríguez-González A, Balbuena JA. Evolutionary morphology of haptoral anchors in monogenoids (Dactylogyridae) of marine catfish (Siluriformes: Ariidae) from the Atlantic coast of South America. Parasitology 2024; 151:390-399. [PMID: 38389483 PMCID: PMC11044069 DOI: 10.1017/s0031182024000192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 02/24/2024]
Abstract
Exploring the phylogenetic signal of morphological traits using geometric morphometry represents a powerful approach to assess the relative weights of convergence and shared evolutionary history in shaping species' forms. We evaluated the phylogenetic signal in shape and size of ventral and dorsal haptoral anchors of 10 species of monogenoids (Hamatopeduncularia, Chauhanellus and Susanlimocotyle) occurring in marine catfish (Siluriformes: Ariidae) from the Atlantic coast of South America. The phylogenetic relationships among these species were mapped onto the morphospaces of shape and size of dorsal and ventral anchors. Two different tests (squared change-parsimony and Kmult) were applied to establish whether the spatial positions in the phylomorphospace were influenced by phylogenetic relationships. A significant phylogenetic signal was found between anchor form and parasite phylogeny. Allometric effects on anchor shape were non-significant. Phylogenetically distant species on the same host differed markedly in anchor morphology, suggesting little influence of host species on anchor form. A significantly higher level of shape variation among ventral anchors was also found, suggesting that the evolutionary forces shaping ventral anchor morphology may operate with differing intensities or exhibit distinct mechanisms compared to their dorsal counterparts. Our results suggest that phylogenetic relationships were a key driver of changes in shape (but not size) of anchors of monogenoids of South American ariids. However, it seems that the emergence of the digitiform haptor in Hamatopenducularia and in some species of Chauhanellus played an important role in the reduction in anchor size and may cause secondary losses of anchors in other groups of monogenoids.
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Affiliation(s)
- Geusivam Barbosa Soares
- Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Edson Aparecido Adriano
- Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
- Departamento de Ecologia e Biologia Evolutiva, Universidade Federal de São Paulo (UNIFESP), Diadema, São Paulo, Brazil
| | | | - Abril Rodríguez-González
- Universidad Nacional Autónoma de México (UNAM), Instituto de Biología, Laboratorio de Helmintología, Ciudad de México, México
| | - Juan Antonio Balbuena
- Institut Cavanilles de Biodiversitat i Biologia Evolutiva, Universitat de València, Valencia, Spain
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Dueñas Díaz M, Núñez V, Drago FB. Helminth Parasites of the Crane Hawk Geranospiza caerulescens (Vieillot) (Aves: Accipitridae) from Argentina, with the Description of a New Species of Parastrigea (Digenea: Strigeidae). Acta Parasitol 2024; 69:203-215. [PMID: 37971666 DOI: 10.1007/s11686-023-00731-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 10/12/2023] [Indexed: 11/19/2023]
Abstract
PURPOSE The goal of this work was to increase the knowledge of the parasitic helminths of the Crane hawk, Geranospiza caerulescens. METHODS Two specimens of the Crane hawk were captured in Formosa province, Argentina, their viscera were preserved in 10% formalin and examined in the laboratory. RESULTS Helminthological analysis revealed the presence of six helminth taxa (one Trematoda, four Nematoda, and one Acanthocephala). The morphometric study of these helminths and its comparison with previous reports, allowed us to describe a new species of Parastrigea (Digenea: Strigeidae) and report new host-parasite associations and geographical records. Parastrigea labiata n. sp. is mainly characterized by having forebody not divided and two long trumpet-shaped projections of dorsal lip, which emerge through the opening. Five taxa, previously known, Synhimantus (Dispharynx) resticula, Synhimantus (Synhimantus) rectus, Microtetrameres sp., Porrocaecum sp. and Centrorhynchus sp. are briefly described. CONCLUSIONS Previous parasitological studies on G. caerulescens were carried out on material collected between 1817 and 1955, and seven species of helminths were reported. In this study, the six taxa of helminths found constitute new host records, which shows the importance of contemporary studies about this host. All helminths found have heteroxenous life cycles and birds are infected by trophic transmission. Crane hawk's diet includes small vertebrates and to a lesser extent large arthropods. The finding of five helminth species that use invertebrates as intermediate hosts could indicate an important consumption of invertebrates. This research expands the helminthological inventory of Argentinean birds and the knowledge of the helminths of G. caerulescens.
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Affiliation(s)
- Mariano Dueñas Díaz
- División Zoología Invertebrados, Museo de La Plata, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Buenos Aires, Argentina.
| | - Verónica Núñez
- División Zoología Invertebrados, Museo de La Plata, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Buenos Aires, Argentina
| | - Fabiana Beatriz Drago
- División Zoología Invertebrados, Museo de La Plata, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Buenos Aires, Argentina
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Hernández DL, Somma AT, Steuernagel A, Vieira TSWJ, Moore B, Reifur L, Montiani-Ferreira F, Pinto HA. A Molecular Phylogenetic Study of the Eye Fluke Philophthalmus lacrymosus (Trematoda: Philophthalmidae) Found in Larus dominicanus (Aves: Laridae) from Brazil. Acta Parasitol 2024; 69:1027-1034. [PMID: 37989828 DOI: 10.1007/s11686-023-00738-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 10/17/2023] [Indexed: 11/23/2023]
Abstract
PURPOSE Species of the genus Philophthalmus are eye flukes with a complex taxonomy, which began to be improved with the help of molecular data only recently. However, most described species have never been placed into a phylogenetic context. In this study, eye flukes previously found on kelp gulls, Larus dominicanus, from Brazil and identified as Philophthalmus lacrymosus were subjected to molecular analysis. METHODS For the molecular analyses, we analyzed parasites found in six infected gulls (one worm per bird) collected from different municipalities of the state of Santa Catarina, Brazil. We carried out the amplification and sequencing of the partial region of the 28S and cox1 genes and the data obtained were compared with sequences available to philophthalmid species and subjected to phylogenetic analysis. RESULTS The isolates of P. lacrymosus from Brazil grouped in well-supported clades with five other species of Philophthalmus with sequences available for comparison. Interspecific divergences of 0.1-1.6% in 28S and 8.2-14.9% in cox1 were found in relation to other isolates of Philophthalmus spp. Two cox1 haplotypes differing in one nucleotide (0.1%) were found between the six eye flukes isolates in gulls from different localities. The Brazilian isolates grouped in a subclade with parasites identified as P. lacrymosus in Portugal; however, the molecular divergences found in cox1 (8.2-8.5%) strongly suggest that these isolates belong to different species. The phylogenetic trees obtained and the intergeneric divergences to species of the genera Cloacitrema and Parorchis did not support the validity of the genus Natterophthalmus, for which P. lacrymosus was proposed as the type species in the past. CONCLUSION As P. lacrymosus was described from Brazil, we recommend that this name be applied to the South American isolates and that the Portuguese isolates be provisionally considered as Philophthalmus sp., a probable cryptic species. Moreover, data obtained supports the previous morphology-based synonymizing between Natterophthalmus and Philophthalmus. Considering our results and most of previous reports of P. lacrymosus in South America, we suggest this species presents a marine life cycle.
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Affiliation(s)
- Danimar López Hernández
- Laboratório de Biologia de Trematoda, Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, P.O. Box 486, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - André Tavares Somma
- Department of Veterinary Medicine, Universidade Federal do Paraná, Curitiba, Brazil
| | - Adriane Steuernagel
- Unidade de Estabilização de Animais Marinhos de Penha, Universidade do Vale do Itajaí, Praia de Armação do Itapocorói, Penha, Brazil
| | | | - Bret Moore
- College of Veterinary Medicine, Department of Small Animal Clinical Sciences, University of Florida, Gainesville, FL, USA
| | - Larissa Reifur
- Departament of Basic Pathology, Universidade Federal do Paraná, Curitiba, Brazil
| | | | - Hudson Alves Pinto
- Laboratório de Biologia de Trematoda, Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, P.O. Box 486, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
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Morey GAM, Sarmiento JA, Chu FW, Cruces CL, Chero JD. Description of two new species of dactylogirids (Monogenoidea: Dactylogyridae) from Mylossoma albiscopum (Cope, 1872) (Characiformes: Serrasalmidae) from the Peruvian Amazonia. Acta Parasitol 2024; 69:727-733. [PMID: 38402371 DOI: 10.1007/s11686-024-00795-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 01/03/2024] [Indexed: 02/26/2024]
Abstract
INTRODUCTION Two new dactylogyrid monogeneans, Anacanthorus cultro n. sp. and Notozothecium palometae n. sp., are described based on specimens collected from the gill filaments of Mylossoma albiscopum (Cope, 1872) (Characiformes: Serrasalmidae), a pelagic and herbivore teleost collected in the Tigre river, Loreto, Peru. MATERIALS AND METHODS Some monogeneans were stained with Gomori's trichrome and mounted in Canada Balsam to determine internal soft structures. Others were cleared in Hoyer's medium for the study of sclerotized structures. Drawings were made using a drawing tube and a microprojector. RESULTS Anacanthorus cultro n. sp. is characterized by the presence of a rod-shaped male copulatory organ (MCO) lacking featherlike structures, and a knife-shaped accessory piece with a submedial knob. Notozothecium palometae n. sp. can be distinguished from all congeners by its MCO with a subbasal spur and an accessory piece with inverted hammer shaped. CONCLUSIONS This is the first data on the parasites of M. albiscopum, a popular fish in local markets. Anacanthorus cultro n. sp. is the twenty-fifth documented species of the genus in Peru, while N. palometae n. sp. represents the seventh species of the genus known to infect freshwater fish species in Peru.
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Affiliation(s)
- Germán Augusto Murrieta Morey
- Laboratorio de Parasitología y Sanidad Acuícola, Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Peru.
- Programa de Pós-graduação em Ciência Animal (PPGCA), Universidade Estadual do Maranhão (UEMA), São Luís, Brazil.
| | - Jennifer A Sarmiento
- Facultad de Ciencias Biológicas (FCB), Universidad Nacional de la Amazonía Peruana (UNAP), Iquitos, Peru
| | - Fred W Chu
- Laboratorio de Biología, Facultad de Ciencias, Universidad Nacional Autónoma de Alto Amazonas, Yurimaguas, Peru
| | - Celso L Cruces
- Laboratorio de Genómica y Biología Evolutiva, Instituto de Ciencias y Tecnología, Universidad Ricardo Palma (URP), Av. Alfredo Benavides 5440 Santiago de Surco, Lima, Peru
| | - Jhon D Chero
- Laboratorio de Genómica y Biología Evolutiva, Instituto de Ciencias y Tecnología, Universidad Ricardo Palma (URP), Av. Alfredo Benavides 5440 Santiago de Surco, Lima, Peru
- Laboratorio de Zoología de Invertebrados, Departamento Académico de Zoología, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos (UNMSM), Av. Universitaria cruce con Av. Venezuela cuadra 34, Lima, Peru
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Machado AB, Simões RO, Maldonado A, Santos MAJ, Luque JL. Integrative Taxonomy of Prosogonotrema bilabiatum Vigueras, 1940 (Digenea: Sclerodistomidae): A Parasite in Atlantic Spadefish Chaetodipterus faber (Broussonet, 1782) (Acanthuriformes: Ephippidae) from Brazil. Acta Parasitol 2024; 69:898-909. [PMID: 38472688 DOI: 10.1007/s11686-024-00825-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 01/31/2024] [Indexed: 03/14/2024]
Abstract
OBJECTIVES The present work aims to expand the knowledge of the digenean species Prosogonotrema bilabiatum (Sclerodistomidae), a parasite of Chaetodipterus faber (Acanthuriformes) from Brazil, with an integrative taxonomic approach, using light microscopy, scanning electron microscopy, histology, and molecular biology. METHODS Forty-one digenean specimens were stained with hydrochloric carmine for morphological studies. Eleven parasites were dehydrated through a graded ethanol series, critical point dried with carbon dioxide, and coated with gold for scanning electron microscopy analysis. Four specimens were processed following histological routine and stained with hematoxylin and eosin and Gomori trichrome. DNA extracted was amplified using 28S partial primer D1-D3. Maximum likelihood and Bayesian inference were performed for phylogenetic analysis. RESULTS Morphometric and morphological data of the specimens studied ranged in accordance as observed in previous descriptions of the species. Observations from scanning electron microscopy and histology corroborated with those observed in stained whole mounts. Molecular analysis showed that specimens of P. bilabiatum from Brazil clustered with another two sequences of this species from different hosts and localities, with a high node support value. CONCLUSIONS The integrative taxonomic approach allowed to record and describe new characteristics of P. bilabiatum related to the tegument, the structure and the arrangement of its tissues. The use of molecular markers confirmed that specimens identified as P. bilabiatum from different hosts and localities are all conspecific. Further studies, mainly molecular with less conserved genetic markers, should be carried out to better understand the phylogenetic relationships of Prosogonotrema with Hemiuroidea.
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Affiliation(s)
- A B Machado
- Programa de Pós-Graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil
| | - R O Simões
- Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil
| | - A Maldonado
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Fundação Instituto Oswaldo Cruz, Rio de Janeiro, Brazil
| | - M A J Santos
- Departamento de Biologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil
| | - J L Luque
- Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil.
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Gharbi K, Bouguerche C, Ahmed M, Pérez-Ponce de León G, Tazerouti F. Redescription and Molecular Characterisation of Derogenes ruber Lühe, 1900 (Hemiuroidea: Derogenidae) from Chelidonichthys lastoviza (Scorpaeniformes: Triglidae) in the Western Mediterranean. Acta Parasitol 2024; 69:309-323. [PMID: 38062228 PMCID: PMC11001720 DOI: 10.1007/s11686-023-00749-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 11/06/2023] [Indexed: 04/11/2024]
Abstract
PURPOSE Derogenes ruber Lühe, 1900, the type-species of the genus Derogenes Lühe, 1900, is a poorly known derogenid digenean. The original description of this species was not illustrated and aspects of the morphology of the parasite from the type-host remain scarce. Available records of this species were brief and/or lacked illustrations and were based on morphology alone. Additionally, molecular data for Derogenes spp. are warranted to untangle species complexes as they provide a better assessment of interspecific genetic divergence. METHODS Derogenes ruber is redescribed based on newly collected specimens from the gall bladder of its type-host Chelidonichthys lastoviza (Bonnaterre, 1788) collected in the Western Mediterranean off the Algerian coast during 2017-2019 and molecular data are provided using a partial fragment of the nuclear 28S ribosomal RNA gene (28S rRNA), the internal transcribed spacer 2 (ITS2) and a fragment of the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene. RESULTS We herein provide a detailed illustrated redescription and morphometric data of D. ruber from its type-host C. lastoviza. We report a new geographical record (off Algeria) for it. Derogenes ruber is also genetically characterised for the first time. Species/lineages of Derogenes were recovered in five strongly supported reciprocally monophyletic clades: (i) D. ruber from C. lastoviza off Algeria; (ii) D. lacustris from Galaxias maculatus (Jenyns) off Argentina; (iii) Lineage "D. varicus DV1" (D. varicus sensu stricto) from fish hosts in the White and Barents seas and the North Sea; (iv) Lineage "D. varicus DV2" from mollusc hosts in the White Sea; and (v) Lineage "D. varicus DV3" from Eumicrotremus fedorovi Mandrytsa. in the Pacific Ocean. Hence, comparison of the newly generated sequences with other available data for Derogenes species supports the distinction of D. ruber confirming its taxonomic status and helping assess interspecific variation. Comparison of D. ruber with the closely related species Derogenes latus revealed overlaps in morphometric data and the validity of the latter species is questioned. CONCLUSION The combination of morphological and molecular data provided for D. ruber provides a firm foundation for further investigations of Derogenes spp. Although we do describe herein material of D. ruber from the type-host, given that the occurrence of a single Derogenes species in various hosts has been challenged by molecular data, and both D. lacustris and D. varicus sensu stricto had been genetically proven to occur in various hosts, D. ruber and D. latus may be indeed synonymous. Additional sequencing effort on Derogenes spp. will strengthen systematic comparative studies and evolutionary relationships within the Derogenidae in general.
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Affiliation(s)
- Kamilia Gharbi
- Laboratoire de Biodiversité et Environnement: Interactions-Génomes, Faculté des Sciences Biologiques, Université des Sciences et de la Technologie Houari Boumediene, BP 32, El Alia Bab Ezzouar, Alger, Algérie
| | - Chahinez Bouguerche
- Department of Zoology, Swedish Museum of Natural History, Stockholm, Sweden.
- Institut Systématique Évolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, 57 rue Cuvier, CP 51, 75005, Paris, France.
| | - Mohammed Ahmed
- Department of Zoology, Swedish Museum of Natural History, Stockholm, Sweden
- Department of Evolution, Ecology and Behaviour, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L69 7AB, UK
| | - Gerardo Pérez-Ponce de León
- Departamento de Zoología, Instituto de Biología, Universidad Nacional Autonoma de México, Ciudad de México, Mexico
- Escuela Nacional de Estudios Superiores Unidad Mérida, Universidad Nacional Autonoma de México, Ucú, Mexico
| | - Fadila Tazerouti
- Laboratoire de Biodiversité et Environnement: Interactions-Génomes, Faculté des Sciences Biologiques, Université des Sciences et de la Technologie Houari Boumediene, BP 32, El Alia Bab Ezzouar, Alger, Algérie
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Atopkin DM, Semenchenko AA, Solodovnik DA, Ivashko YI. A report on the complete mitochondrial genome of the trematode Azygia robusta Odhner, 1911, its new definitive host from the Russian Far East, and unexpected phylogeny of Azygiidae within Digenea, as inferred from mitogenome sequences. J Helminthol 2023; 97:e69. [PMID: 37655787 DOI: 10.1017/s0022149x23000500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
New data on the complete mitochondrial genome of Azygia robusta (Azygiidae) were obtained by the next-generation sequencing (NGS) approach. The mitochondrial DNA (mtDNA) of A. robusta had a length of 13 857 bp and included 12 protein-coding genes, two ribosomal genes, 22 transfer RNA genes, and two non-coding regions. The nucleotide sequences of the complete mitochondrial genomes of two A. robusta specimens differed from each other by 0.12 ± 0.03%. Six of 12 protein-coding genes demonstrated intraspecific variation. The difference between the nucleotide sequences of the complete mitochondrial genomes of A. robusta and Azygia hwangtsiyui was 26.95 ± 0.35%; the interspecific variation of protein-coding genes between A. robusta and A. hwangtsiyui ranged from 20.5 ± 0.9% (cox1) to 30.7 ± 1.2% (nad5). The observed gene arrangement in the mtDNA sequence of A. robusta was identical to that of A. hwangtsiyui. Codon usage and amino acid frequencies were highly similar between A. robusta and A. hwangtsiyui. The results of phylogenetic analyses based on mtDNA protein-coding regions showed that A. robusta is closely related to A. hwangtsiyui (belonging to the same suborder, Azygiida) that formed a distinct early-diverging branch relative to all other Digenea. A preliminary morphological analysis of paratypes of the two azygiid specimens studied showed visible morphological differences between them. The specimen extracted from Sakhalin taimen (Parahucho perryi) was most similar to A. robusta. Thus, we here provide the first record of a new definitive host, P. perryi, for A. robusta and also molecular characteristics of the trematode specimens.
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Affiliation(s)
- D M Atopkin
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
- Department of Cell Biology and Genetics, Far Eastern Federal University, Vladivostok, Russia
| | - A A Semenchenko
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
| | - D A Solodovnik
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
| | - Y I Ivashko
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
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Gao JF, Zhang AH, Wei W, Jia B, Zhang J, Li B, Chen YY, Sun YY, Hou MR, Liu XW, Wang JW, Zhang XH, Wang CR. The complete mitochondrial genome of Ogmocotyle ailuri: gene content, composition and rearrangement and phylogenetic implications. Parasitology 2023; 150:661-671. [PMID: 37051880 PMCID: PMC10410389 DOI: 10.1017/s0031182023000379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/02/2023] [Accepted: 04/04/2023] [Indexed: 04/14/2023]
Abstract
Trematodes of the genus Ogmocotyle are intestinal flukes that can infect a variety of definitive hosts, resulting in significant economic losses worldwide. However, there are few studies on molecular data of these trematodes. In this study, the mitochondrial (mt) genome of Ogmocotyle ailuri isolated from red panda (Ailurus fulgens) was determined and compared with those from Pronocephalata to investigate the mt genome content, genetic distance, gene rearrangements and phylogeny. The complete mt genome of O. ailuri is a typical closed circular molecule of 14 642 base pairs, comprising 12 protein-coding genes (PCGs), 22 transfer RNA genes, 2 ribosomal RNA genes and 2 non-coding regions. All genes are transcribed in the same direction. In addition, 23 intergenic spacers and 2 locations with gene overlaps were determined. Sequence identities and sliding window analysis indicated that cox1 is the most conserved gene among 12 PCGs in O. ailuri mt genome. The sequenced mt genomes of the 48 Plagiorchiida trematodes showed 5 types of gene arrangement based on all mt genome genes, with the gene arrangement of O. ailuri being type I. Phylogenetic analysis using concatenated amino acid sequences of 12 PCGs revealed that O. ailuri was closer to Ogmocotyle sikae than to Notocotylus intestinalis. These data enhance the Ogmocotyle mt genome database and provide molecular resources for further studies of Pronocephalata taxonomy, population genetics and systematics.
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Affiliation(s)
- Jun-Feng Gao
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases; College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Ai-Hui Zhang
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases; College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Wei Wei
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases; College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Bin Jia
- Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences, Qiqihar, China
| | - Jun Zhang
- Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences, Qiqihar, China
| | - Ben Li
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases; College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Ying-Yu Chen
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases; College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Yun-Yi Sun
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases; College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Mei-Ru Hou
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases; College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Xue-Wei Liu
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases; College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Jia-Wen Wang
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases; College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Xin-Hui Zhang
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases; College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Chun-Ren Wang
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases; College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
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Karar YFM, Blend CK, Dronen NO, Adel A. Towards resolving the problematic status of the digenean genus Astiotrema Looss, 1900: Taxa excluded from Astiotrema (sensu stricto) with special reference to plagiorchioid genera closely related to the restricted concept of Astiotrema. Zootaxa 2023; 5284:445-495. [PMID: 37518727 DOI: 10.11646/zootaxa.5284.3.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Indexed: 08/01/2023]
Abstract
The restricted concept of Astiotrema Looss, 1900 has been revised to include only eight species and various representative synonyms. However, several remaining taxa of Astiotrema (sensu lato) still need more inspection and scrutiny to determine their correct taxonomic position. Following a comprehensive review, four new genera are erected to accommodate some taxa excluded from Astiotrema (sensu stricto), three of which are closely related to this restricted concept of Astiotrema. Plesioastiotrema n. gen. is erected to accommodate Plesioastiotrema monticellii (Stossich, 1904) n. comb. (syn. Astiotrema monticellii Stossich, 1904) as the type-species and Plesioastiotrema magniovum (Fischthal & Kuntz, 1965) n. comb. (syn. Astiotrema magniovum Fischthal & Kuntz, 1965). Homeoastiotrema n. gen. is established for its type-species, Homeoastiotrema turneri (Bray, Van Oosterhout, Blais & Cable, 2006) n. comb., to accommodate Astiotrema turneri Bray, Van Oosterhout, Blais & Cable, 2006. Ichthyastiotrema n. gen. is erected with its type-species, Ichthyastiotrema fotedari (Dhar, 1977) n. comb. (syn. Astiotrema fotedari Dhar, 1977). A distinct morphologically and taxonomically distant taxon from Astiotrema (sensu stricto) is proposed in its own genus, Alloastiotrema n. gen. with its type-species, Alloastiotrema birmanii (Khan, Gul-E-Lala, Ghazi, Khatoon, Waheed & Khan, 2021) n. comb., to accommodate Astiotrema birmanii Khan, Gul-E-Lala, Ghazi, Khatoon, Waheed & Khan, 2021 and positioned distant from Astiotrema (sensu stricto). Astiotrema erinaceum (Poirier, 1886) Stossich, 1904, Astiotrema trituri Grabda, 1959 and Astiotrema (Biguetrema) tananarivense Deblock & Capron, 1962 are adopted synonyms of Galactosomum erinaceum (Poirier, 1886) Bittner & Sprehn, 1928, Neoastiotrema trituri (Grabda, 1959) Tkach, 2008 and Laiogonimus tananarivensis (Deblock & Capron, 1962) Fischthal & Thomas, 1968, respectively. Astiotrema lazeri El-Naffar, Saoud & Hassan, 1984 and Astiotrema gangeticus Gupta & Singh, 1985 nec Harshey, 1932 are synonymized with Glossidium pedatum Looss, 1899 and Orientocreadium batrachoides Tubangui, 1931, respectively. Based on its contradiction to the diagnosis of members of the Orientocreadiidae Yamaguti, 1958, we declare Orientocreadium lucknowensis Nigam, Chandra, Johri & Saxena, 2015 as incertae sedis. Longigula Qiu, Zhang & Li, 1983 and Kalipharynx Boeger & Thatcher, 1983 are morphologically closest to Astiotrema (sensu stricto) compared to members of the Plagiorchiidae Lühe, 1901 based on both genera possessing a cirrus-pouch with a unipartite, saccular seminal vesicle. The problematic status of Pseudoparamacroderoides Gupta & Agrawal, 1968 (sensu lato), the closest related genus to Astiotrema (sensu stricto), is discussed through evaluating the differential characteristics among listed species to indicate the extent of their validity and identifying the genuine species within this genus to re-evaluate the confusing and overlapping species to help understand their relationships with closely related plagiorchioids. Accordingly, only three species are recognized within Pseudoparamacroderoides Gupta & Agrawal, 1968 (sensu stricto): Pseudoparamacroderoides dongthapensis Truong, Curran & Bullard in Truong, Curran, Dutton & Bullard, 2021; Pseudoparamacroderoides pseudobagri (Wang in Wang, Zhao, Chen & Tao, 1983) n. comb. (syns. Astiotrema pseudobagri [Wang in Wang, Zhao, Chen & Tao, 1983] Karar, Blend, Dronen & Adel, 2021; Gauhatiana pseudobagri Wang in Wang, Zhao, Chen & Tao, 1983); and Pseudoparamacroderoides seenghali Gupta & Agrawal, 1968 (Syn. Pseudoparamacroderoides vittati Kakaji, 1969 n. syn.). Pseudoparamacroderoides raychaudhurii Agarwal & Kumar, 1983 is re-evaluated as Alloglossidium raychaudhurii (Agarwal & Kumar, 1983) n. comb. Anomalomacroderoiditrema n. gen. is erected for the type-species, Anomalomacroderoiditrema keni (Agarwal & Agarwal, 1984) n. comb., to accommodate specimens of Pseudoparamacroderoides keni Agarwal & Agarwal, 1984. Although the morphological convergence of Gauhatiana Gupta, 1953 within the Plagiorchioidea Lühe, 1901 has been suggested, it is neither a plagiorchiid nor a macroderoidid and does not appear closely related to Astiotrema (sensu stricto); it evidently is a member of the Monorchiidae Odhner, 1911. Alloglyptus Byrd, 1950 is taxonomically positioned as a gorgoderoid in the Allocreadiidae Looss, 1902, neither a plagiorchioid taxon nor closely related to Astiotrema (sensu stricto). The ambiguity of the seminal receptacle in some taxa of Astiotrema is discussed.
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Affiliation(s)
- Yasser F M Karar
- Department of Zoology; Faculty of Sciences; New Valley University; Kharga; New Valley; Egypt; Research Associate; Laboratory of Parasitology; Department of Ecology & Conservation Biology; College of Agriculture & Life Sciences; Texas A&M University; College Station; Texas 77843; U.S.A..
| | - Charles K Blend
- Corpus Christi Museum of Science & History; 1900 N. Chaparral St.; Corpus Christi; Texas 78401; U.S.A.; Laboratory of Parasitology; Biodiversity Research & Teaching Collection; Department of Ecology & Conservation Biology; College of Agriculture & Life Sciences; Texas A&M University; College Station; Texas 77843; U.S.A..
| | - Norman O Dronen
- Laboratory of Parasitology; Biodiversity Research & Teaching Collection; Department of Ecology & Conservation Biology; College of Agriculture & Life Sciences; Texas A&M University; College Station; Texas 77843; U.S.A.; The Schubot Center for Avian Health; Department of Veterinary Pathobiology; College of Veterinary Medicine & Biomedical Sciences; Texas A&M University; College Station; Texas 77843; U.S.A.
| | - Asmaa Adel
- Department of Zoology; Faculty of Sciences; South Valley University; 83523 Qena; Egypt.
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Chero JD, Cruces CL, Sáez G, Luque JL. Six new species of Rhamnocercus Monaco, Wood & Mizelle, 1954 (Monogenea: Diplectanidae) infecting the gills from South American sciaenid fishes. Syst Parasitol 2022; 99:571-585. [PMID: 35711031 DOI: 10.1007/s11230-022-10047-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 05/20/2022] [Indexed: 11/27/2022]
Abstract
A parasitological survey searching diplectanids (Monogenea: Diplecatnidae) infesting the gills of marine fishes from South America was carried out during the 2019-2020 period. The gills of four sciaenid species, 2 Cheilotrema fasciatum Tschudi, 1 smalleye croaker Nebris microps Cuvier, 2 royal highhat Pareques lanfeari (Barton), and 1 minor stardrum Stellifer minor (Tschudi), were sampled. Six new species of Rhamnocercus Monaco, Wood & Mizelle, 1954 were described: Rhamnocercus chacllae n. sp. and Rhamnocercus chaskae n. sp. from P. lanfeari, Rhamnocercus fasciatus n. sp. from C. fasciatum, Rhamnocercus microps n. sp. from N. microps, and Rhamnocercus rimaci n. sp. and Rhamnocercus tantaleani n. sp. from S. minor. Rhamnocercus chacllae n. sp. can be differentiated from its congeners by its L-shaped male copulatory organ (MCO) and by having an anteromedial slight notch at ventral bar. Rhamnocercus chaskae n. sp. differs from the other species of the genus by its long and straight MCO with bifid distal end and by having haptoral accessory spines at level of ventral bar with quadrifid distal portion. Rhamnocercus fasciatus n. sp. is characterized by possessing a straight and long MCO with truncated distal end, haptoral accessory spines at level of ventral bar with bifid distal portion, dorsal bars with a knob at lateral extremity, and a large vagina with bell-shaped. Rhamnocercus microps n. sp. differs from all congeners mainly by having a short and straight MCO with the distal end of internal tube spatulate and uncovered by external tube. Rhamnocercus rimaci n. sp. is can be distinguished from all other species of Rhamnocercus by having an almost J-shaped MCO with the distal end of external tube slight expanded and the distal end of internal tube narrow and uncovered by external tube. Rhamnocercus tantaleani n. sp. is mainly characterized by its MCO, which is tubular and straight, having the distal end of external tube bifurcated (right branch well-expanded and left branch narrow) and the distal end of internal tube enveloped by left branch of the external tube. This is the first data on the parasites of P. lanfeari, a little known, but popular fish in local markets from Peru. Rhamnocercus microps n. sp. is the first described species of Rhamnocercus in Brazil. The present finding brings to 12, the number of known species of Rhamnocercus. A key to Rhamnocercus species is provided.
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Affiliation(s)
- Jhon D Chero
- Departamento de Protozoología, Helmintología e Invertebrados afines, Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Av. Arenales 1256, Jesús María, 15072, Lima, Peru.
- Programa de Pós-Graduação em Biologia Animal da, Universidade Federal Rural do Rio de Janeiro, BR 465, Km 7, Seropédica, Rio de Janeiro, CEP, 23890-000, Brazil.
| | - Celso L Cruces
- Programa de Pós-Graduação em Biologia Animal da, Universidade Federal Rural do Rio de Janeiro, BR 465, Km 7, Seropédica, Rio de Janeiro, CEP, 23890-000, Brazil
| | - Gloria Sáez
- Laboratorio de Parasitología General y Especializada, Facultad de Ciencias Naturales y Matemática, Universidad Nacional Federico Villarreal (UNFV), El Agustino, Código postal 15007, Lima, Peru
| | - José L Luque
- Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, 23851-970, Brazil
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Waki T, Nakao M, Sasaki M, Ikezawa H, Inoue K, Ohari Y, Kameda Y, Asada M, Furusawa H, Miyazaki S. Brachylaima phaedusae n. sp. (Trematoda: Brachylaimidae) from door snails in Japan. Parasitol Int 2022; 86:102469. [PMID: 34534656 DOI: 10.1016/j.parint.2021.102469] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/03/2021] [Accepted: 09/11/2021] [Indexed: 11/15/2022]
Abstract
The metacercarial infections of door snails (Gastropoda: Clausiliidae) with unknown species of the genus Brachylaima (Trematoda: Brachylaimidae) have recently been reported in eastern Honshu and Kyushu, Japan. A large scale snail survey was carried out to clarify their taxonomic status. From the period of 2015 to 2020, a total of 1239 land snails (768 door snails and 471 others) were collected from 32 localities in Honshu, Shikoku, and Kyushu. The resulting trematode isolates were identified as Brachylaima sp. by mitochondrial DNA barcoding. The sporocysts were found only a few from Megalophaedusa sublunellata (Clausiliidae), Tauphaedusa subaculus (Clausiliidae), and Aegista trochula (Camaenidae), while the metacercariae were frequently detected from 14 species of Clausiliidae and 2 species of other families. Although Brachylaima sp. showed a broad range of intermediate hosts, door snails seem to be very important to drive the life cycle. The gravid adults of Brachylaima sp. was experimentally raised from metacercariae using immunosuppressed mice. Morphological, phylogenetical, and ecological considerations prompted us to propose Brachylaima phaedusae n. sp. for this unknown species. The definitive hosts of the new species are completely unknown. The wide geographic distribution and high genetic diversity of the new species suggest a possibility that the definitive host is ground-foraging birds, which prefer door snails.
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Affiliation(s)
- Tsukasa Waki
- Faculty of Science, Toho University, 2-2-1, Miyama, Funabashi-city, Chiba 274-8510, Japan.
| | - Minoru Nakao
- Department of Parasitology, Asahikawa Medical University, Midorigaoka-Highashi 2-1, Asahikawa 078-8510, Japan
| | - Mizuki Sasaki
- Department of Parasitology, Asahikawa Medical University, Midorigaoka-Highashi 2-1, Asahikawa 078-8510, Japan
| | - Hiromi Ikezawa
- Ibaraki Nature Museum, 700 Osaki, Bando, Ibaraki 306-0622, Japan
| | - Ken Inoue
- Laboratory of Parasitology, Joint Graduate School of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan; Laboratory of Nematology, Department of Applied Biological Sciences, Saga University, 1 Honjo, Saga-city, Saga 840-8502, Japan; Saga Prefectural Meat Sanitary Inspection Station, 4127 Minamitaku, Taku-city, Saga 846-0024, Japan
| | - Yuma Ohari
- Laboratory of Parasitology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku Sapporo, Hokkaido 060-0818, Japan
| | - Yuichi Kameda
- Department of Anthropology, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba, Ibaraki 305-0005, Japan
| | - Masahito Asada
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, 13, Nishi 2 Sen, Inada, Obihiro, Hokkaido 080-8555, Japan
| | - Haruki Furusawa
- Faculty of Science, Toho University, 2-2-1, Miyama, Funabashi-city, Chiba 274-8510, Japan
| | - Shinsuke Miyazaki
- Kyushu Mollusc Study Society, 4-21-17 Konan, Miyazaki, Miyazaki 880-0944, Japan
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Shchenkov SV, Sokolov SG, Denisova SA. Phylogenetic position of Atriophallophorus minutus (Trematoda: Microphallidae), the type-species of the genus Atriophallophorus Deblock & Rosé, 1964, based on partial 28S rDNA gene sequence. Parasitol Int 2021; 87:102534. [PMID: 34971813 DOI: 10.1016/j.parint.2021.102534] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 12/22/2021] [Accepted: 12/22/2021] [Indexed: 11/20/2022]
Abstract
We found metacercariae of a microphallid trematode Atriophallophorus minutus in freshwater snails Bithynia tentaculata. In this study, we provide a morphological description of whole-mount specimens and semi-thin sections of experimentally grown adults of this species. Our morphological examination supports the idea that the adults of Atriophallophorus spp. have a ventral sucker with a sinistral interruption of the outer edge. In the 28S rDNA gene-based phylogenetic analyses, our specimens of A. minutus were grouped into Atriophallophorus spp. clade, as a sister taxon to Atriophallophorus winterbourni + Atriophallophorus sp. Analysis of the pairwise genetic distances between coI mtDNA gene sequences revealed a low divergence between the two specimens of A. minutus (1.1%) and a greater divergence (up to 16.6%) between them and A. winterbourni. Since other Atriophallophorus spp. are known to have a strict specificity to the polyvalent intermediate host, we suggest that A. minutus reported from different snail species may represent a complex of cryptic species.
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Affiliation(s)
- Sergei V Shchenkov
- Department of Invertebrate Zoology, St. Petersburg State University, 7/9 Universitetskaya embankment, 199034 St. Petersburg, Russia.
| | - Sergey G Sokolov
- A.N. Severtsov Institute of Ecology and Evolution, 33 Leninskiy prospect, 119071 Moscow, Russia; Institute of Biology, Karelian Research Centre of the RAS, 11 Pushkinskaya Street, 185910 Petrozavodsk, Russia
| | - Sofia A Denisova
- Department of Invertebrate Zoology, St. Petersburg State University, 7/9 Universitetskaya embankment, 199034 St. Petersburg, Russia
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Duan Y, von Gersdorff Jørgensen L, Kania PW, Karami AM, Al‐Jubury A, Buchmann K. Eye fluke effects on Danish freshwater fish: Field and experimental investigations. J Fish Dis 2021; 44:1785-1798. [PMID: 34289126 PMCID: PMC9292478 DOI: 10.1111/jfd.13496] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/03/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
Eye flukes in fish are common in freshwater lakes. Fish become infected by the penetration of cercariae released from freshwater snails, and high infection pressures may be associated with mortalities in a Danish lake. Examination of two other freshwater lakes, combined with laboratory study, supported the notion. We investigated 77 freshwater fish from two lakes and the infection level suggested the occurrence of a high cercarial infection pressure in the Danish lakes. Dominant genera were Tylodelphys and Diplostomum covering a range of species identified by PCR and sequencing of the 18S (partial)-ITS1-5.8S-ITS2-28S (partial) of the rDNA. Cercariae of the prevalent species Diplostomum pseudospathaceum were used to infect zebrafish Danio rerio for the elucidation of short-term effects on the fish host. Zebrafish did not display abnormal behaviour when exposed to 200-400 cercariae, but a dosage of 600 and 1,000 cercariae/fish proved lethal. When fish were exposed to sublethal dosages, 19 out of 27 immune genes were significantly regulated and three genes encoding cytokine (IL 4/13B, IL-6 and IL-8) were upregulated at 3 hr post-infection (hpi), whereas others were downregulated especially at a later time point. We suggest that direct massive cercarial penetration of fish surfaces may be detrimental and may represent a threat to fish populations.
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Affiliation(s)
- Yajiao Duan
- Laboratory of Aquatic PathobiologyDepartment of Veterinary and Animal SciencesFaculty of Health and Medical SciencesUniversity of CopenhagenFrederiksberg CDenmark
| | - Louise von Gersdorff Jørgensen
- Laboratory of Aquatic PathobiologyDepartment of Veterinary and Animal SciencesFaculty of Health and Medical SciencesUniversity of CopenhagenFrederiksberg CDenmark
| | - Per Walter Kania
- Laboratory of Aquatic PathobiologyDepartment of Veterinary and Animal SciencesFaculty of Health and Medical SciencesUniversity of CopenhagenFrederiksberg CDenmark
| | - Asma M. Karami
- Laboratory of Aquatic PathobiologyDepartment of Veterinary and Animal SciencesFaculty of Health and Medical SciencesUniversity of CopenhagenFrederiksberg CDenmark
| | - Azmi Al‐Jubury
- Laboratory of Aquatic PathobiologyDepartment of Veterinary and Animal SciencesFaculty of Health and Medical SciencesUniversity of CopenhagenFrederiksberg CDenmark
| | - Kurt Buchmann
- Laboratory of Aquatic PathobiologyDepartment of Veterinary and Animal SciencesFaculty of Health and Medical SciencesUniversity of CopenhagenFrederiksberg CDenmark
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Lewisch E, Führer H, Shahi‐Barogh B, Harl J, El‐Matbouli M. Emergence of Discocotyle sagittata (Monogenea: Polyopisthocotylea) in rainbow trout (Oncorhynchus mykiss) and brown trout (Salmo trutta) in an Austrian aquarium. J Fish Dis 2021; 44:1643-1646. [PMID: 34339049 PMCID: PMC8518808 DOI: 10.1111/jfd.13470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/14/2021] [Accepted: 05/17/2021] [Indexed: 06/13/2023]
Affiliation(s)
- Eva Lewisch
- Clinical Division of Fish MedicineUniversity of Veterinary MedicineViennaAustria
| | - Hans‐Peter Führer
- Institute of ParasitologyUniversity of Veterinary MedicineViennaAustria
| | - Bita Shahi‐Barogh
- Institute of ParasitologyUniversity of Veterinary MedicineViennaAustria
| | - Josef Harl
- Institute of PathologyUniversity of Veterinary MedicineViennaAustria
| | - Mansour El‐Matbouli
- Clinical Division of Fish MedicineUniversity of Veterinary MedicineViennaAustria
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20
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Assis JCA, López-Hernández D, Favoretto S, Medeiros LB, Melo AL, Martins NRS, Pinto HA. Identification of the avian tracheal trematode Typhlocoelum cucumerinum (Trematoda: Cyclocoelidae) in a host-parasite-environment system: diagnosis, life cycle and molecular phylogeny. Parasitology 2021; 148:1383-1391. [PMID: 34103107 PMCID: PMC11010135 DOI: 10.1017/s0031182021000986] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/01/2021] [Accepted: 06/01/2021] [Indexed: 11/07/2022]
Abstract
Typhlocoelum cucumerinum is a tracheal parasite of birds widely distributed across the globe. Nevertheless, aspects of the biology of this cyclocoelid are still poorly understood. Herein, we report the finding of T. cucumerinum in definitive and intermediate hosts from an urban waterbody of Brazil. The parasite was initially detected during the necropsy of domestic Muscovy ducks (Cairina moschata) found dead in the locality. Coproparasitological tests in live animals revealed that 12/47 (25.53%) Muscovy ducks and 2/8 (25%) mallards (Anas platyrhynchos platyrhynchos) were infected with T. cucumerinum. Moreover, rediae and metacercariae morphologically similar to T. cucumerinum were found in 3/248 (1.33%) Biomphalaria straminea collected in the same waterbody frequented by the birds. The conspecificity between the adult and the larval stages was confirmed molecularly (100% similarity in Cox-1). Moreover, the phylogenetic position of T. cucumerinum was determined for the first time based on partial fragments of the 28S, Cox-1 and Nad-1 genes. The species grouped with other members of the subfamily Typhlocoelinae with sequences available, but the data obtained do not support the distinctiveness of the genera Typhlocoelum and Tracheophilus. Further studies involving a broader range of species can result in taxonomic rearrangements in Typhlocoelinae.
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Affiliation(s)
- Jordana C. A. Assis
- Laboratório de Biologia de Trematoda, Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Danimar López-Hernández
- Laboratório de Biologia de Trematoda, Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Samantha Favoretto
- Department of Veterinary Medicine, Universidade Federal de Lavras, Lavras, Brazil
| | - Lilian B. Medeiros
- Laboratório de Doenças das Aves, Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Alan L. Melo
- Laboratório de Biologia de Trematoda, Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Nelson R. S. Martins
- Laboratório de Doenças das Aves, Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Hudson A. Pinto
- Laboratório de Biologia de Trematoda, Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Gagnon DK, Kasl EA, Preisser WC, Belden LK, Detwiler JT. Morphological and molecular characterization of Quinqueserialis (Digenea: Notocotylidae) species diversity in North America. Parasitology 2021; 148:1083-1091. [PMID: 34027840 PMCID: PMC11010126 DOI: 10.1017/s0031182021000792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 05/01/2021] [Accepted: 05/06/2021] [Indexed: 11/07/2022]
Abstract
Estimates of trematode diversity are inaccurate due to unrecognized cryptic species and phenotypic plasticity within species. Integrative taxonomy (genetics, morphology and host use) increases the clarity of species delineation and improves knowledge of parasite biology. In this study, we used this approach to resolve taxonomic issues and test hypotheses of cryptic species in a genus of trematode, Quinqueserialis. Specimens from throughout North America were field collected from hosts and obtained from museums. We found three morphologically distinct groups and successfully sequenced specimens from two of these groups. DNA sequencing at the 28S and CO1 gene regions revealed that two of the three groups were genetically distinct. One genetic group included two morphological clusters demonstrating host-induced phenotypic plasticity within Quinqueserialis quinqueserialis. The other unique genetic group is a novel species, Quinqueserialis kinsellai n. sp., which is described herein. Our study illustrates the importance of integrating multiple sources of evidence when investigating trematode diversity to account for the influence of cryptic species or phenotypic plasticity. However, further sampling is needed to understand Quinqueserialis spp. diversity as some species have no genetic information associated with them.
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Affiliation(s)
- Demi K. Gagnon
- Department of Biological Sciences, University of Manitoba, Winnipeg, MBR3T 2N2, Canada
| | - Emily A. Kasl
- Department of Biology, University of North Alabama, Florence, AL35632, USA
| | - Whitney C. Preisser
- School of Aquatic and Fishery Science, University of Washington, Seattle, WA98105, USA
| | - Lisa K. Belden
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA24061, USA
| | - Jillian T. Detwiler
- Department of Biological Sciences, University of Manitoba, Winnipeg, MBR3T 2N2, Canada
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Queiroz MS, Alves PV, López-Hernández D, Anjos LA, Pinto HA. Exploring Neotropical anuran parasites: a morphological, life cycle and phylogenetic study of Catadiscus marinholutzi (Trematoda: Diplodiscidae). Parasitology 2021; 148:798-808. [PMID: 33593464 PMCID: PMC11010121 DOI: 10.1017/s0031182021000330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/27/2021] [Accepted: 02/12/2021] [Indexed: 11/07/2022]
Abstract
Amphistome species belonging to the genus Catadiscus are poorly studied intestinal trematodes found primarily in Neotropical anurans. Herein, developmental stages of an amphistome species found during herpetological and malacological surveys in a temporary marsh pond from Brazil were subjected to morphological (light and scanning electron microscopy) and molecular analyses. Adult parasites recovered from anurans were identified as Catadiscus marinholutzi. Amphistome cercariae found in the planorbid snails Drepanotrema depressissimum and Drepanotrema lucidum from the same waterbody were used for experimental and molecular studies. Immature parasites, morphologically compatible with members of Catadiscus, were experimentally obtained in laboratory-reared tadpoles. Sequencing of a partial region of 28S rDNA gene of both adult and cercariae revealed 100% similarity between these developmental stages, confirming their conspecificity. Phylogenetic analyses were attempted for the first time to reveal the position of a species of Catadiscus in the superfamily Paramphistomoidea. Catadiscus marinholutzi falls in a virtual polytomy together with other paramphistomoids, which leaves its phylogenetic relationships within the group unclear. Moreover, the high genetic divergence to Diplodiscus spp. (10.06–10.84%) cast doubts on the placement of Catadiscus within Diplodiscidae. Hence the species composition of the Diplodiscidae should be re-evaluated in further studies using a broader spectrum of related taxa.
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Affiliation(s)
- Murilo S. Queiroz
- Instituto de Biociências de Botucatu, Universidade Estadual Paulista, Postal Code 18618-970, Botucatu, SP, Brazil
| | - Philippe V. Alves
- Departmento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P.O. Box 486, Postal Code 31270-901, Belo Horizonte, MG, Brazil
| | - Danimar López-Hernández
- Departmento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P.O. Box 486, Postal Code 31270-901, Belo Horizonte, MG, Brazil
| | - Luciano A. Anjos
- Departamento de Biologia e Zootecnia, Universidade Estadual Paulista, Passeio Monção 226, Postal Code 15385-000, Ilha Solteira, SP, Brazil
| | - Hudson A. Pinto
- Departmento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, P.O. Box 486, Postal Code 31270-901, Belo Horizonte, MG, Brazil
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Behnke JM, Rogan MT, Craig PS, Jackson JA, Hide G. Long-term trends in helminth infections of wood mice ( Apodemus sylvaticus) from the vicinity of Malham Tarn in North Yorkshire, England. Parasitology 2021; 148:451-463. [PMID: 33256865 PMCID: PMC11010161 DOI: 10.1017/s0031182020002243] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/03/2020] [Accepted: 11/24/2020] [Indexed: 12/22/2022]
Abstract
Helminth infections in wood mice (n = 483), trapped over a period of 26 years in the woods surrounding Malham Tarn in North Yorkshire, were analysed. Although 10 species of helminths were identified, the overall mean species richness was 1.01 species/mouse indicating that the helminth community was relatively depauperate in this wood mouse population. The dominant species was Heligmosomoides polygyrus, the prevalence (64.6%) and abundance (10.4 worms/mouse) of which declined significantly over the study period. Because of the dominance of this species, analyses of higher taxa (combined helminths and combined nematodes) also revealed significantly declining values for prevalence, although not abundance. Helminth species richness (HSR) and Brillouin's index of diversity (BID) did not show covariance with year, neither did those remaining species whose overall prevalence exceeded 5% (Syphacia stroma, Aonchotheca murissylvatici and Plagiorchis muris). Significant age effects were detected for the prevalence and abundance of all higher taxa, H. polygyrus and P. muris, and for HSR and BID, reflecting the accumulation of helminths with increasing host age. Only two cases of sex bias were found; male bias in abundance of P. muris and combined Digenea. We discuss the significance of these results and hypothesize about the underlying causes.
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Affiliation(s)
- Jerzy M. Behnke
- School of Life Sciences, University of Nottingham, University Park, NottinghamNG7 2RD, UK
| | - Michael T. Rogan
- Biomedical Research Centre, School of Science, Engineering and Environment, University of Salford, SalfordM5 4WT, UK
| | - Philip S. Craig
- Biomedical Research Centre, School of Science, Engineering and Environment, University of Salford, SalfordM5 4WT, UK
| | - Joseph A. Jackson
- Biomedical Research Centre, School of Science, Engineering and Environment, University of Salford, SalfordM5 4WT, UK
| | - Geoff Hide
- Biomedical Research Centre, School of Science, Engineering and Environment, University of Salford, SalfordM5 4WT, UK
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González-García MT, Andrade-Gómez L, Pinacho-Pinacho CD, Sereno-Uribe AL, García-Varela M. Host-induced phenotypic plasticity in Saccocoelioides lamothei Aguirre-Macedo and Violante-González, 2008 (Digenea: Haploporidae) a parasite of freshwater, brackish and marine fishes from Middle America. Parasitology 2021; 148:519-531. [PMID: 33298206 PMCID: PMC10950380 DOI: 10.1017/s0031182020002334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/27/2020] [Accepted: 12/02/2020] [Indexed: 11/08/2022]
Abstract
Saccocoelioides is a genus of trematodes associated with fishes from the Americas. In the current research, morphologically distinct specimens of Saccocoelioides spp. were collected from six countries in Middle America. Specimens were sequenced using three molecular markers, the domains D1-D3 of the large subunit (LSU) from the nuclear rDNA, the cytochrome c oxidase subunit 1 (cox1) and nicotinamide adenine dinucleotide dehydrogenase subunit 1 (nad1) from mitochondrial DNA. A total of 74 new sequences were compared and aligned with other sequences available in GenBank. Maximum likelihood and Bayesian inference analyses were inferred from the LSU and cox1 datasets, revealing unequivocally that all the specimens correspond to S. lamothei. A haplotype network was built with 119 sequences of the nad1 gene. The network detected 57 distinct haplotypes divided into three haplogroups. To explore morphological differences among samples of S. lamothei, 17 morphological features were measured from 53 specimens from three fish families: Eleotridae, Mugilidae and Gobiidae. Principal component analysis yielded three main polygons that corresponded with each family analysed, suggesting host-induced phenotypic plasticity. The current evidence suggests that S. lamothei infects at least five fish families along the Pacific coasts of Mexico, Guatemala, El Salvador, Honduras, Nicaragua and Costa Rica.
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Affiliation(s)
- Marcelo Tonatiuh González-García
- Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Ciudad Universitaria, C.P. 04510, Ciudad de México, México
| | - Leopoldo Andrade-Gómez
- Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Ciudad Universitaria, C.P. 04510, Ciudad de México, México
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Ciudad Universitaria, C. P. 04510, Ciudad de México, México
| | - Carlos Daniel Pinacho-Pinacho
- Investigador Cátedras CONACyT, Instituto de Ecología, A.C., Red de Estudios Moleculares Avanzados, Km 2.5 Ant. Carretera a Coatepec, Xalapa, Veracruz91070, México
| | - Ana Lucia Sereno-Uribe
- Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Ciudad Universitaria, C.P. 04510, Ciudad de México, México
| | - Martín García-Varela
- Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Ciudad Universitaria, C.P. 04510, Ciudad de México, México
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Morey GAM, Sol LGS, Cachique JCZ. New species and records of Anacanthorus (Monogenoidea: Dactylogyridae) from the gills of Brycon amazonicus (Characiformes: Bryconidae) in the Peruvian Amazon. Syst Parasitol 2021; 98:85-97. [PMID: 33686564 DOI: 10.1007/s11230-021-09962-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 01/26/2021] [Indexed: 11/27/2022]
Abstract
Five species belonging to Anacanthorus Mizelle & Price, 1965 were found parasitizing the gills of Brycon amazonicus (Agassiz) collected in the Peruvian Amazon: A. spiralocirrus Kritsky, Thatcher & Kayton, 1979, A. femoris n. sp., A. kukamensis n. sp., A. rarus n. sp. and A. sabaloi n. sp. Anacanthorus femoris n. sp. presents a membranous accessory piece with flared tip, hooks with proximal bulbous base containing 1 translucent region; A. kukamensis n. sp. presents an accessory piece with two branches, one with can-opener-shaped termination and the other with denticles in the lateral margin and at both ends of the distal portion, hooks with expanded proximal bulbous base with central and elliptical translucent region; A. rarus n. sp. presents a MCO as a long sclerotized tube, slightly sinuous, with folds in its middle region, with proximal region with circular opening and distal region with rough termination. The accessory piece is small and curved, hooks with expanded proximal bulbous base with central, elliptical translucent region, elongate shank, truncate thumb, slightly curved shaft and inconspicuous point; in A. sabaloi n. sp. the MCO is a long sclerotized reflexive tube, with membranous appearance from its middle part towards the end, with distal and proximal end with an inwardly directed fold, the accessory piece is a membranous sheath that envelops the MCO just before the reflection zone. The four new species found in this study are the second records of species of Anacanthorus described from a fish host from the Peruvian Amazon.
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Affiliation(s)
- Germán Augusto Murrieta Morey
- Laboratorio de Parasitología y Sanidad Acuícola, Instituto de Investigaciones de la Amazonía Peruana, Av. José A. Quiñones, Km 2.5 - San Juan Bautista, Iquitos, 0784, Loreto, Peru.
| | - Luis Garcia Sol Sol
- Universidad Nacional de la Amazonía Peruana, Sargento Lores 385, Iquitos, Loreto, Peru
| | - Jose Carlos Zumaeta Cachique
- Laboratorio de Parasitología y Sanidad Acuícola, Instituto de Investigaciones de la Amazonía Peruana, Av. José A. Quiñones, Km 2.5 - San Juan Bautista, Iquitos, 0784, Loreto, Peru
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Wiroonpan P, Chontananarth T, Purivirojkul W. Cercarial trematodes in freshwater snails from Bangkok, Thailand: prevalence, morphological and molecular studies and human parasite perspective. Parasitology 2021; 148:366-383. [PMID: 33100233 PMCID: PMC11010064 DOI: 10.1017/s0031182020002073] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 10/07/2020] [Accepted: 10/15/2020] [Indexed: 11/07/2022]
Abstract
We investigated the prevalence, morphological characters and molecular classifications of trematode cercariae in freshwater snails randomly collected from 59 sampling localities in Bangkok from May 2018 to March 2019. We used a crushing technique to observe the cercarial stage inside each snail body and amplified the internal transcribed spacer 2 regions of cercarial DNA using polymerase chain reaction methodology. The associated phylogenetic tree was reconstructed using Bayesian inference analyses. A total of 517 of 15 621 examined snails were infected with trematode cercariae, and the infected snails were classified into 11 species of seven families with a 3.31% overall prevalence of the infection. The Bithynia siamensis siamensis snail displayed the highest prevalence of infection (16.16%), whereas the Physella acuta snail exhibited the lowest prevalence (0.08%) of infection. Eight morphological types of cercariae were observed. The highest prevalence of infection was observed in mutabile cercaria (1.86%). Based on molecular investigations, the phylogram revealed eight cercaria types assigned to at least nine digenean trematode families, of which five belong to groups of human intestinal flukes. Although, with the exception of schistosome cercaria, trematode cercariae are not known to directly damage humans, understanding the general biology of trematode cercariae (including diversity, distribution, infection rates and host range) is important and necessary for the prevention and control of parasitic transmission that impacts aquatic cultivations, livestock farming and human health.
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Affiliation(s)
- Pichit Wiroonpan
- Animal Systematics and Ecology Speciality Research Unit, Department of Zoology, Faculty of Science, Kasetsart University, Bang Khen Campus, Bangkok, 10900, Thailand
| | - Thapana Chontananarth
- Applied Parasitology Research Laboratory, Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok, Thailand
- Center of Excellence in Animal, Plant and Parasitic Biotechnology, Srinakharinwirot University, Bangkok, Thailand
| | - Watchariya Purivirojkul
- Animal Systematics and Ecology Speciality Research Unit, Department of Zoology, Faculty of Science, Kasetsart University, Bang Khen Campus, Bangkok, 10900, Thailand
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Zajac N, Zoller S, Seppälä K, Moi D, Dessimoz C, Jokela J, Hartikainen H, Glover N. Gene Duplication and Gain in the Trematode Atriophallophorus winterbourni Contributes to Adaptation to Parasitism. Genome Biol Evol 2021; 13:evab010. [PMID: 33484570 PMCID: PMC7936022 DOI: 10.1093/gbe/evab010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/10/2021] [Indexed: 01/10/2023] Open
Abstract
Gene duplications and novel genes have been shown to play a major role in helminth adaptation to a parasitic lifestyle because they provide the novelty necessary for adaptation to a changing environment, such as living in multiple hosts. Here we present the de novo sequenced and annotated genome of the parasitic trematode Atriophallophorus winterbourni and its comparative genomic analysis to other major parasitic trematodes. First, we reconstructed the species phylogeny, and dated the split of A. winterbourni from the Opisthorchiata suborder to approximately 237.4 Ma (±120.4 Myr). We then addressed the question of which expanded gene families and gained genes are potentially involved in adaptation to parasitism. To do this, we used hierarchical orthologous groups to reconstruct three ancestral genomes on the phylogeny leading to A. winterbourni and performed a GO (Gene Ontology) enrichment analysis of the gene composition of each ancestral genome, allowing us to characterize the subsequent genomic changes. Out of the 11,499 genes in the A. winterbourni genome, as much as 24% have arisen through duplication events since the speciation of A. winterbourni from the Opisthorchiata, and as much as 31.9% appear to be novel, that is, newly acquired. We found 13 gene families in A. winterbourni to have had more than ten genes arising through these recent duplications; all of which have functions potentially relating to host behavioral manipulation, host tissue penetration, and hiding from host immunity through antigen presentation. We identified several families with genes evolving under positive selection. Our results provide a valuable resource for future studies on the genomic basis of adaptation to parasitism and point to specific candidate genes putatively involved in antagonistic host-parasite adaptation.
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Affiliation(s)
- Natalia Zajac
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
- ETH Zurich, Department of Environmental Systems Science, Institute of Integrative Biology, Zurich, Switzerland
| | - Stefan Zoller
- ETH Zurich, Department of Environmental Systems Science, Institute of Integrative Biology, Zurich, Switzerland
| | - Katri Seppälä
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
- Research Department for Limnology, University of Innsbruck, Mondsee, Austria
| | - David Moi
- Department of Computational Biology, University of Lausanne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
- Center for Integrative Genomics, Lausanne, Switzerland
| | - Christophe Dessimoz
- Department of Computational Biology, University of Lausanne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
- Center for Integrative Genomics, Lausanne, Switzerland
- Centre for Life’s Origins and Evolution, Department of Genetics Evolution and Environment, University College London, United Kingdom
- Department of Computer Science, University College London, United Kingdom
| | - Jukka Jokela
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
- ETH Zurich, Department of Environmental Systems Science, Institute of Integrative Biology, Zurich, Switzerland
| | - Hanna Hartikainen
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
- ETH Zurich, Department of Environmental Systems Science, Institute of Integrative Biology, Zurich, Switzerland
- School of Life Sciences, University of Nottingham, University Park, United Kingdom
| | - Natasha Glover
- Department of Computational Biology, University of Lausanne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
- Center for Integrative Genomics, Lausanne, Switzerland
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Tsuchida K, Flores V, Viozzi G, Rauque C, Urabe M. Hemiuroidean trematodes from freshwater Patagonian fishes: description of a new species, distribution and molecular phylogeny. Parasitol Res 2021; 120:1219-1232. [PMID: 33521841 DOI: 10.1007/s00436-020-06939-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 10/20/2020] [Indexed: 11/28/2022]
Abstract
A new trematode species, Derogenes lacustris Tsuchida, Flores, Viozzi, Rauque et Urabe n. sp. (Derogenidae: Derogeninae), from freshwater fishes is described using morphological and molecular approaches in Argentinean Patagonia. D. lacustris is the most common hemiuroidean species in the Limay River basin and parasitizes almost all the native and introduced Patagonian freshwater fish. This new species could be considered as the unique freshwater species in the genus Derogenes Nicoll, 1910. Another hemiuroidean species, Thometrema patagonica Szidat (Archiev Hydrobiol 51: 542-577, 1956) Lunaschi et Drago 2000 (Derogenidae: Halipeginae), is found from Percichthys trucha (Perciformes) in the Neuquén River basin. Its diagnosis and molecular data are provided by the present study. In the molecular analysis of the Patagonian hemiuroideans, T. patagonica composes a group with halipeginean species in the phylogenetic tree of 28S rDNA sequences, while D. lacustris is not included in the same group. D. lacustris also shows low intraspecific variation in COI sequences regardless of the localities or host species.
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Affiliation(s)
- Karin Tsuchida
- Division of Environmental Dynamics, Graduate School of Environmental Science, The University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga, 522-8533, Japan.
| | - Verónica Flores
- Laboratorio de Parasitología, INIBIOMA (CONICET-Univ. Nac. del Comahue), Quintral 1250, (8400), San Carlos de Bariloche, Río Negro, Argentina.
| | - Gustavo Viozzi
- Laboratorio de Parasitología, INIBIOMA (CONICET-Univ. Nac. del Comahue), Quintral 1250, (8400), San Carlos de Bariloche, Río Negro, Argentina
| | - Carlos Rauque
- Laboratorio de Parasitología, INIBIOMA (CONICET-Univ. Nac. del Comahue), Quintral 1250, (8400), San Carlos de Bariloche, Río Negro, Argentina
| | - Misako Urabe
- Department of Ecosystem Studies, School of Environmental Sciences, The University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga, 522-8533, Japan
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Falkenberg JM, Lacerda ACF, Vieira GHC. Co-occurrence and niche overlap among gill parasites of the white mullet (Mugil curema Valenciennes, 1836) (Osteichthyes: Mugilidae) from the western Atlantic, Brazil. Parasitol Res 2021; 120:849-859. [PMID: 33481091 DOI: 10.1007/s00436-020-07015-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 12/08/2020] [Indexed: 11/27/2022]
Abstract
Different groups parasitize the gills of fishes, and the organisms can interact in positive, negative, or neutral ways, depending on parasitic abundance, environmental conditions, and the availability of resources. Here, we studied the distribution of ectoparasites on the gills of the mullet Mugil curema in the Cabedelo port region (Brazil), asking if (1) the gill parasites of M. curema fix on specific host gill arches and/or (2) co-occur in the same gill arches within a host individual; (3) if the abundance of one parasite taxon affects the abundance of another on the same gill arches; and (4) considering distinct major groups, if parasites present patterns of co-occurrence on hosts and gill arches different from the expected at random. We used generalized linear models, generalized linear mixed models, and models with zero inflation to define the microhabitats (arches) with the highest abundances of parasites and null models to analyze the co-occurrences of gill parasite groups. Three taxa of Monogenea (Ligophorus brasiliensis Abdallah, Azevedo & Luque, 2009, Ligophorus sp. 1 and Ligophorus sp. 2) and six species of Copepoda were recorded (Bomolochus nitidus Wilson, 1911; Caligus praetextus Bere, 1936; Ergasilus atafonensis Amado & Rocha, 1997; Ergasilus bahiensis Amado & Rocha, 1997; Ergasilus caraguatatubensis Amado & Rocha, 1997 and Ergasilus lizae Krøyer, 1863). We found that, in general, the gill parasites were more abundant/prevalent on specific arches (I and II) of the hosts, shared such preferences and co-occurred on the gill arches. The presence of one taxon influenced the occurrence of another only in the arches I and II; as a result, the infracommunities were characterized as interactive in the gills of this host species.
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Affiliation(s)
- Julia Martini Falkenberg
- Programa de Pós-Graduação em Ecologia e Monitoramento Ambiental, Universidade Federal da Paraíba, Centro, s/n, Departamento de Meio Ambiente e Engenharia, Rio Tinto, PB, 58297-000, Brazil
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia), Universidade Federal da Paraíba, Cidade Universitária, s/n, Centro de Ciências Exatas e da Natureza. Departamento de Sistemática e Ecologia, João Pessoa, PB, 58051-900, Brazil
| | - Ana Carolina Figueiredo Lacerda
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia), Universidade Federal da Paraíba, Cidade Universitária, s/n, Centro de Ciências Exatas e da Natureza. Departamento de Sistemática e Ecologia, João Pessoa, PB, 58051-900, Brazil
| | - Gustavo Henrique Calazans Vieira
- Programa de Pós-Graduação em Ecologia e Monitoramento Ambiental, Universidade Federal da Paraíba, Centro, s/n, Departamento de Meio Ambiente e Engenharia, Rio Tinto, PB, 58297-000, Brazil
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia), Universidade Federal da Paraíba, Cidade Universitária, s/n, Centro de Ciências Exatas e da Natureza. Departamento de Sistemática e Ecologia, João Pessoa, PB, 58051-900, Brazil
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Paladini G, Shinn AP, Taylor NGH, Bron JE, Hansen H. Geographical distribution of Gyrodactylus salaris Malmberg, 1957 (Monogenea, Gyrodactylidae). Parasit Vectors 2021; 14:34. [PMID: 33422145 PMCID: PMC7796612 DOI: 10.1186/s13071-020-04504-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 11/28/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Gyrodactylus salaris Malmberg, 1957 is an OIE (Office International des Epizooties)-listed parasitic pathogen and had until the current study been reported from 19 countries across Europe, although many of these records require confirmation. The last comprehensive evaluation regarding the distribution of G. salaris, however, was made in 2007, although some of the states identified as being G. salaris-positive were ascribed this status based on misidentifications, on partial data resulting from either morphological or molecular tests, or from records that have not been revisited since their early reporting. It is thus important to go through the reports on G. salaris to obtain a status for each country. METHODS To provide a revised update of the G. salaris distribution, a literature review was necessary. This literature, however, was not always readily accessible and, in certain cases, the article only made superficial reference to the parasite without providing details or data to support the identification. In most cases, the original specimens were not deposited in a national collection. Additional Gyrodactylus material for the current study was obtained from selected salmonid populations with the aim to contribute to current understanding regarding the distribution of G. salaris. Additional parasite material collected for this study was processed following standard procedures for species identification in Gyrodactylus [1]. RESULTS From the work conducted in the current study, G. salaris is reported from a further three regions in Italy, alongside three other species, and appears to occur extensively throughout central Italy without causing significant mortalities to its rainbow trout, Oncorhynchus mykiss (Walbaum), host. The analysis of archive material from G. salaris-positive farms would suggest that G. salaris has been in this country since at least 2000. Material obtained from rainbow trout from Finland and Germany are confirmed as G. salaris, supporting existing data for these countries. No specimens of G. salaris, however, were found in the additional Gyrodactylus material obtained from rainbow trout reared in Portugal and Spain. A morphologically similar species, Gyrodactylus teuchis Lautraite, Blanc, Thiery, Daniel et Vigneulle, 1999, however, was found. CONCLUSIONS Following the present review, Gyrodactylus salaris is reported from 23 out of 50 recognised states throughout Europe; only records from 14 of these states have been confirmed by either morphology and/or by an appropriate molecular test and are considered valid, while only nine of these records have been confirmed by a combination of both methods.
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Affiliation(s)
- Giuseppe Paladini
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA Scotland, UK
| | - Andrew P. Shinn
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA Scotland, UK
- Benchmark R&D (Thailand), No. 57/1 Moo 6, Samed Sub-District, Muang Chonburi District, Chonburi, Chonburi Province 20000 Thailand
| | | | - James E. Bron
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA Scotland, UK
| | - Haakon Hansen
- Norwegian Veterinary Institute, PO Box 750 Sentrum, Oslo, N-0106 Norway
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Pinacho-Pinacho CD, Calixto-Rojas M, García-Vásquez A, Guzmán-Valdivieso I, Barrios-Gutiérrez JJ, Rubio-Godoy M. Species delimitation of Gyrodactylus (Monogenea: Gyrodactylidae) infecting the southernmost cyprinids (Actinopterygii: Cyprinidae) in the New World. Parasitol Res 2021; 120:831-848. [PMID: 33409628 DOI: 10.1007/s00436-020-06987-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 11/24/2020] [Indexed: 10/22/2022]
Abstract
The genus Gyrodactylus von Nordmann, 1832 represents one of the most diverse and widespread taxa within Monogenea, with approximately 500 species described worldwide. Thirty-three species of Gyrodactylus have been recorded in Mexico, and in the last two decades, at least 26 new species have been described mainly from freshwater fish families such as poeciliids, goodeids, profundulids, characids, and cichlids. In this study, we describe two new species of Gyrodactylus infecting freshwater cyprinids based on morphological and molecular characteristics. Gyrodactylus ticuchi n. sp. and Gyrodactylus tobala n. sp. were recovered from Notropis moralesi de Buen and N. imeldae Cortés, respectively, captured in five localities from the State of Oaxaca, Mexico. The new species differ slightly from their congeners in the morphology of the haptoral hard parts and the male copulatory organ. Sequences of the Internal Transcribed Spacers rDNA (ITS1-5.8S-ITS2), cytochrome oxidase subunit I (cox1), and the D2 + D3 domains of the large subunit (28S rDNA) were obtained from multiple specimens and analyzed using Maximum Likelihood (ML) and Bayesian Inference (BI). Phylogenetic hypotheses using ITS rDNA, cox1, and 28S rDNA genes recovered two new species of Gyrodactylus from N. moralesi and N. imeldae; we briefly discuss their phylogenetic relationship with other congeners. These gyrodactylids represent the first species described in species of Notropis from southern Mexico, the cyprinids exhibiting the southernmost distribution in the New World.
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Affiliation(s)
- Carlos Daniel Pinacho-Pinacho
- Cátedras CONACyT, Instituto de Ecología, A. C, Red de Estudios Moleculares Avanzados, Carretera antigua a Coatepec 351, El Haya, Xalapa, 91070, Veracruz, Mexico.
| | - Miguel Calixto-Rojas
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Km 2.5 Ant. Carretera a Coatepec, 91070 Xalapa, Veracruz, Mexico
| | - Adriana García-Vásquez
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Km 2.5 Ant. Carretera a Coatepec, 91070 Xalapa, Veracruz, Mexico
| | - Ismael Guzmán-Valdivieso
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Km 2.5 Ant. Carretera a Coatepec, 91070 Xalapa, Veracruz, Mexico
| | - Juan J Barrios-Gutiérrez
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Km 2.5 Ant. Carretera a Coatepec, 91070 Xalapa, Veracruz, Mexico
| | - Miguel Rubio-Godoy
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Km 2.5 Ant. Carretera a Coatepec, 91070 Xalapa, Veracruz, Mexico
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Gonchar A, Galaktionov KV. It is marine: distinguishing a new species of Catatropis (Digenea: Notocotylidae) from its freshwater twin. Parasitology 2021; 148:74-83. [PMID: 32958097 PMCID: PMC11010198 DOI: 10.1017/s0031182020001808] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/15/2020] [Accepted: 09/15/2020] [Indexed: 11/07/2022]
Abstract
The morphology of sexual adults is the cornerstone of digenean systematics. In addition, life cycle data have always been significant. The integration of these approaches, supplemented with molecular data, has allowed us to detect a new species that many researchers may have previously seen, but not recognized. Sexual adults from common eiders that we found in northern European seas were extremely similar to other notocotylids, but the discovery of their intermediate host, a marine snail, revealed the true nature of this material. Here we describe sexual adults, rediae and cercariae of Catatropis onobae sp. nov. We discuss how 'Catatropis verrucosa' should be regarded, justify designation of the new species C. onobae for our material and explain why it can be considered a cryptic species. The phylogenetic position of C. onobae within Notocotylidae, along with other evidence, highlights the challenges for the taxonomy of the family, for which two major genera appear to be polyphyletic and life cycle data likely undervalued.
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Affiliation(s)
- Anna Gonchar
- Department of Invertebrate Zoology, Saint Petersburg State University, Universitetskaya emb., 7–9, Saint Petersburg199034, Russia
- Laboratory of Parasitic Worms and Protists, Zoological Institute RAS, Universitetskaya emb., 1, Saint Petersburg199034, Russia
| | - Kirill V. Galaktionov
- Department of Invertebrate Zoology, Saint Petersburg State University, Universitetskaya emb., 7–9, Saint Petersburg199034, Russia
- Laboratory of Parasitic Worms and Protists, Zoological Institute RAS, Universitetskaya emb., 1, Saint Petersburg199034, Russia
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Chai JY, Jung BK, Lee KH, Ryu JY, Kim HS, Hong SJ, Htoon TT, Tin HH, Na BK, Sohn WM. Larval Gnathostomes and Zoonotic Trematode Metacercariae in Fish from a Local Market in Yangon City, Myanmar. Korean J Parasitol 2020; 58:701-707. [PMID: 33412776 PMCID: PMC7806426 DOI: 10.3347/kjp.2020.58.6.701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 10/03/2020] [Indexed: 11/23/2022]
Abstract
A survey was performed to investigate the infection status of zoonotic helminth larvae in fish from a local market of North Dagon District in Yangon City, Myanmar. A total of 486 fish in 13 species were collected 8 times from December 2015 to December 2019. All fish were transported under ice to a laboratory in Korea and examined for helminth larvae using artificial digestion method. Larval gnathostomes and metacercariae of more than 8 zoonotic trematode species, i.e., Opisthorchis viverrini, Haplorchis taichui, H. pumilio, H. yokogawai, Centrocestus spp., Stellantchasmus falcatus, Pygidiopsis cambodiensis, and Procerovum sp., were detected. Larval gnathostomes were found in 58 (16.0%) out of 362 fish of 6 species, with mean intensity of 2.8 per fish infected. Metacercariae of O. viverrini were detected in 10 (2.9%) out of 349 fish of 5 species, with mean intensity of 16.9 per fish infected. Metacercarial prevalences of 4 intestinal flukes, H. taichui, H. pumilio, H. yokogawai, and Centrocestus spp., were 16.8%, 26.0%, 12.5%, and 15.0% in the positive fish species, respectively, and mean metacercarial intensity was 63.3, 26.8, 86.2, and 8.7 per fish infected. Metacercariae of S. falcatus and P. cambodiensis were detected only from the mullet, Chelon macrolepis. Metacercariae of Procerovum sp. were found in Channa striata and Anabas testudineus. Collectively, it was confirmed that the fish were infected with gnathostome larvae and metacercariae of O. viverrini and intestinal flukes in Yangon City, Myanmar.
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Affiliation(s)
- Jong-Yil Chai
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649,
Korea
- Department of Tropical Medicine and Parasitology, Seoul National University College of Medicine, Seoul 03080,
Korea
| | - Bong-Kwang Jung
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649,
Korea
| | - Keon Hoon Lee
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649,
Korea
| | - Jin-Youp Ryu
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649,
Korea
| | - Hyeon-Seung Kim
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649,
Korea
| | - Sung-Jong Hong
- Department of Environmental Medical Biology, Chung-Ang University College of Medicine, Seoul 06974,
Korea
| | | | | | - Byoung-Kuk Na
- Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727,
Korea
| | - Woon-Mok Sohn
- Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727,
Korea
- Corresponding author ()
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da Silva BAF, Dias KGA, da Silva RJ, Yamada FH. A new species of Wallinia Pearse, 1920 (Digenea: Allocreadiidae), in Astyanax bimaculatus (Linnaeus, 1758) (Characidae) in Northeast Brazil, based on morphology and DNA sequences. Parasitol Res 2020; 120:37-44. [PMID: 33241440 DOI: 10.1007/s00436-020-06948-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 10/27/2020] [Indexed: 11/25/2022]
Abstract
Wallinia caririensis n. sp. is described from the intestine of Astyanax bimaculatus (Linnaeus, 1758) (Characidae) collected in the Batateiras River in the municipality of Crato, Ceará state, Brazil. The description was based on integrative taxonomy approach using DNA sequences from the D1-D3 domains of the 28S rDNA gene. The new species was confirmed through the phylogenetic analysis of the 28S rDNA gene, which showed that Wallinia caririensis n. sp. is a sister taxon of Wallinia brasiliensis (Dias, Müller, Almeida, Silva, Azevedo, Pérez-Ponce de León, and Abdallah, 2018, and Wallinia anindoi Hernández-Mena, Pinacho-Pinacho, García-Varela, Mendonza-Garfias, and Pérez-Ponce de León, 2019), a species which parasitizes Astyanax fasciatus (Cuvier, 1819), A. lacustris (Lucena and Soares, 2016) in Brazil, and A. aeneus (Günther, 1860) in Mexico, with genetic divergences of 2% and 3%, respectively. The new species can be distinguished morphologically from its congeners by possessing large body size (length and width) and tapered extremity in the posterior end of the body, eyespots are present at the pharynx level, and vitelline follicles reach up to the half distance between the posterior testis and the extremity of the body, by having larger testes distributed in coincident zones (i.e., contiguous) and non-operculated eggs (a conspicuous characteristic in W. brasiliensis). To date, species of this genus have already been described in freshwater fishes from Mexico, Costa Rica, Venezuela, and Southeastern Brazil. The species described in this study consists of the second species parasitizing characids in Brazil, and the first record in Northeastern Brazil. This finding fills a gap and expands the biogeographic distribution of the genus Wallinia in South America.
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Affiliation(s)
- Bruno Anderson Fernandes da Silva
- Laboratório de Ecologia Parasitária (LABEP), Departamento de Biologia, Universidade Regional do Cariri (URCA) - Campus Pimenta, Pimenta, Crato, Ceará, 63105-000, Brazil.
| | - Karina Gabriele Alves Dias
- Laboratório de Parasitologia de Animais Silvestres (LAPAS), Setor de Parasitologia, Instituto de Biociências de Botucatu, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Campus Botucatu, Botucatu, São Paulo, Brazil
| | - Reinaldo José da Silva
- Laboratório de Parasitologia de Animais Silvestres (LAPAS), Setor de Parasitologia, Instituto de Biociências de Botucatu, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Campus Botucatu, Botucatu, São Paulo, Brazil
| | - Fábio Hideki Yamada
- Laboratório de Ecologia Parasitária (LABEP), Departamento de Biologia, Universidade Regional do Cariri (URCA) - Campus Pimenta, Pimenta, Crato, Ceará, 63105-000, Brazil
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Hossen MS, Barton DP, Zhu X, Wassens S, Shamsi S. Re-description and molecular characterisation of Choricotyle australiensis Roubal, Armitage & Rohde, 1983 (Monogenea: Diclidophoridae) infecting Chrysophrys auratus (Forster) (Perciformes: Sparidae). Syst Parasitol 2020; 97:815-825. [PMID: 33146836 DOI: 10.1007/s11230-020-09950-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 08/30/2020] [Indexed: 11/25/2022]
Abstract
Choricotyle australiensis Roubal, Armitage & Rohde, 1983, a diclidophorid monogenean species, is redescribed and genetically characterised using the partial nuclear 28S ribosomal RNA gene (28S rRNA) and a fragment of mitochondrial cytochrome c oxidase subunit 1 (cox1) gene sequences for specimens collected from Chrysophrys auratus (Forster) off Australia and New Zealand. Previous studies have either provided morphological or genetic results, whereas this study combines morphological and advanced molecular methods. A total of 70 Ch. auratus were examined with 22 individuals of C. australiensis recovered from the gills (overall prevalence of 23%). This study has provided the first evidence for the exploration of mitochondrial cox1 region for C. australiensis. Comparison of the newly generated sequences with other available data supported the distinction of C. australiensis among diclidophorid Furhmann, 1928 species thus confirming its taxonomic status.
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Affiliation(s)
- Md Shafaet Hossen
- School of Animal and Veterinary Sciences & Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW, 2678, Australia.
- Department of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
| | - Diane P Barton
- School of Animal and Veterinary Sciences & Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW, 2678, Australia
| | - Xiaocheng Zhu
- School of Animal and Veterinary Sciences & Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW, 2678, Australia
| | - Skye Wassens
- School of Environmental Sciences & Institute of Land, Water and Society, Charles Sturt University, Albury, NSW, 2640, Australia
| | - Shokoofeh Shamsi
- School of Animal and Veterinary Sciences & Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW, 2678, Australia
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Dos Santos QM, Avenant-Oldewage A. Review on the molecular study of the Diplozoidae: analyses of currently available genetic data, what it tells us, and where to go from here. Parasit Vectors 2020; 13:539. [PMID: 33126913 PMCID: PMC7602351 DOI: 10.1186/s13071-020-04417-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/21/2020] [Indexed: 01/04/2023] Open
Abstract
The use of molecular tools in the study of parasite taxonomy and systematics have become a substantial and crucial component of parasitology. Having genetic characterisation at the disposal of researchers has produced mostly useful, and arguably more objective conclusions. However, there are several groups for which limited genetic information is available and, coupled with the lack of standardised protocols, renders molecular study of these groups challenging. The Diplozoidae are fascinating and unique monogeneans parasitizing mainly freshwater cyprinid fishes in Europe, Asia and Africa. This group was studied from a molecular aspect since the turn of the century and as such, limitations and variability concerning the use of these techniques have not been clearly defined. In this review, all literature and molecular information, primarily from online databases such as GenBank, were compiled and scrupulously analysed for the Diplozoidae. This was done to review the information, detect possible pitfalls, and provide a "checkpoint" for future molecular studies of the family. Hindrances detected are the availability of sequence data for only a limited number of species, frequently limited to a single sequence per species, and the heavy reliance on one non-coding ribosomal marker (ITS2 rDNA) which is difficult to align objectively and displays massive divergences between taxa. Challenging species identification and limited understanding of diplozoid species diversity and plasticity are also likely restricting factors, all of which hamper the accurate taxonomic and phylogenetic study of this group. Thus, a more integrated taxonomic approach through the inclusion of additional markers, application of more rigorous morphological assessment, more structured barcoding techniques, alongside thorough capturing of species descriptions including genetypes, genophore vouchers and reference collections in open sources are encouraged. The pitfalls highlighted are not singular to the Diplozoidae, and the study of other groups may benefit from the points raised here as well.
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Affiliation(s)
- Quinton Marco Dos Santos
- Department of Zoology, University of Johannesburg, Auckland Park, P.O. Box 524, Johannesburg, 2006 South Africa
| | - Annemariè Avenant-Oldewage
- Department of Zoology, University of Johannesburg, Auckland Park, P.O. Box 524, Johannesburg, 2006 South Africa
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Cavalcante PHDO, da Silva MT, Pereira ADNS, Gentile R, Santos CP. Helminth diversity in Pimelodus blochii Valenciennes, 1840 (Osteichthyes: Pimelodidae) in two Amazon Rivers. Parasitol Res 2020; 119:4005-4015. [PMID: 33043417 PMCID: PMC7704492 DOI: 10.1007/s00436-020-06906-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 09/24/2020] [Indexed: 11/27/2022]
Abstract
Structure of the helminth community and analyses of helminth population parameters of Pimelodus blochii collected in the Xapuri River in comparison with those in the Acre River were evaluated. Eight adult helminth species were found parasitizing P. blochii in the Acre River: the nematodes Orientatractis moraveci, Rondonia rondoni, Philometroides acreanensis, Cucullanus (Cucculanus) pinai pinai, Procamallanus (Spirocamallanus) pimelodus, Rhadochona acuminata, and Brasilnema sp., and the trematode Dadaytrema oxycephala. For Xapuri’s fishes, nine helminth species were found: the nematodes O. moraveci, R. rondoni, C. (C.) pinai pinai, Procamallanus (Spirocamallanus) rarus, P. (S.) pimelodus, R. acuminata, Brasilnema sp., and Cystidicolidae gen. sp., and the trematode D. oxycephala. Nematode and Acanthocephala larvae were also reported. Helminth abundance, prevalence, and diversity were influenced by seasonality and locality (river). The helminth parasites from Acre’s fishes formed a subset of the helminth community of the Xapuri’s. The results indicate an influence of the environmental characteristics of the rivers on the helminth community structure and diversity. This is the first study of the parasite community of P. blochii in the Xapuri River. The paretheses of (Spirocamallanus) and (S.) should not be in italics all along the text and tables.
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Affiliation(s)
- Pedro Hercílio de Oliveira Cavalcante
- Instituto Federal do Acre, Campus Rio Branco, Rio Branco, AC, Brazil
- Programa de Pós-Graduação em Biodiversidade e Saúde, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Maralina Torres da Silva
- Instituto Federal do Acre, Campus Rio Branco, Rio Branco, AC, Brazil
- Programa de Pós-Graduação em Biodiversidade e Saúde, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | | | - Rosana Gentile
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Cláudia Portes Santos
- Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, Fiocruz, Av. Brasil 4365, Rio de Janeiro, RJ, 21040-360, Brazil.
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Hou QH, Zhou XH, Yao GM, Li ZB, Shu M, Wang X, Luo W. [Genetic analysis of mitochondrial pcox1 and ribosomal 18S rRNA genes in Eurytrema pancreaticum isolates from goats in Huaihua City, Hunan Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020; 32:380-383. [PMID: 32935512 DOI: 10.16250/j.32.1374.2020126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To investigate the genetic variation of Eurytrema pancreaticum isolated from goats in Huaihua City, Hunan Province. METHODS The partial sequence of mitochondrial cytochrome I (pcox1) and ribosomal 18S rRNA genes were amplified using a PCR assay in E. pancreaticum isolates from goats in Huaihua City, Hunan Province, and the PCR amplification products were sequenced. Then, the gene sequences were subjected to genetic variation and phylogenetic analyses. RESULTS The sequences of the pcox1 and 18S rRNA genes were 430 bp and 1 857 bp in length in 18 E. pancreaticum isolates from goats in Huaihua City, Hunan Province, and there were 14 and 35 variation sites in pcox1 and 18S rRNA gene sequences, with intra-species genetic variations of 0 to 1.4% and 0 to 0.8%, respectively. The sequences of pcox1 and 18S rRNA genes had 99.0% to 99.8% and 99.5% to 99.8% homologies with those from E. pancreaticum Chinese strain recorded in the GenBank database. Consistent phylogenetic analysis results were found based on pcox1 and 18S rRNA genes. The 18 E. pancreaticum isolates from goats in Huaihua City were clustered into a clade with the known E. pancreaticum isolates registered in GenBank, and the clade with these 18 E. pancreaticum isolates was close to the clades with Eurytrema species and far from the clades with other trematodes. CONCLUSIONS The E. pancreaticum isolates from goats have a low genetic variation in Huaihua City, Hunan Province. Mitochondrial pcox1 and ribosomal 18S rRNA genes may serve as molecular markers for the studies on the genetic variation in goat-derived E. pancreaticum.
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Affiliation(s)
- Q H Hou
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
| | - X H Zhou
- Xinhuang County Center of Animal Husbandry and Fishery Affairs, Hunan Province, China
| | - G M Yao
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
| | - Z B Li
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
| | - M Shu
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
| | - X Wang
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
| | - W Luo
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
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Tkach VV, Achatz TJ, Pulis EE, Junker K, Snyder SD, Bell JA, Halajian A, de Vasconcelos Melo FT. Phylogeny and systematics of the Proterodiplostomidae Dubois, 1936 (Digenea: Diplostomoidea) reflect the complex evolutionary history of the ancient digenean group. Syst Parasitol 2020; 97:409-439. [PMID: 32813221 PMCID: PMC7434846 DOI: 10.1007/s11230-020-09928-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 07/12/2020] [Indexed: 11/25/2022]
Abstract
The Proterodiplostomidae Dubois, 1936 is a relatively small family of diplostomoidean digeneans parasitising the intestines of reptilian hosts associated with freshwater environments in tropical and subtropical regions. The greatest diversity of proterodiplostomids is found in crocodilians, although some parasitise snakes and turtles. According to the most recent revision, the Proterodiplostomidae included 17 genera within 5 subfamilies. Despite the complex taxonomic structure of the family, availability of testable morphology-based phylogenetic hypotheses and ancient hosts, molecular phylogenetic analyses of the group were practically lacking. Herein, we use novel DNA sequence data of the nuclear lsrRNA gene and mitochondrial cox1 gene from a broad range of proterodiplostomid taxa obtained from crocodilian, fish, and snake hosts on four continents to test the monophyly of the family and evaluate the present morphology-based classification system of the Proterodiplostomidae in comparison with the molecular phylogeny. This first detailed phylogeny for the Proterodiplostomidae challenges the current systematic framework. Combination of molecular phylogenetic data with examination of freshly collected quality specimens and re-evaluation of morphological criteria resulted in a number of systematic and nomenclatural changes along with a new phylogeny-based classification of the Proterodiplostomidae. As the result of our molecular and morphological analyses: (i) the current subfamily structure of the Proterodiplostomidae is abolished; (ii) three new genera, Paraproterodiplostomum n. g., Neocrocodilicola n. g. and Proteroduboisia n. g., are described and Pseudoneodiplostomoides Yamaguti, 1954 is restored and elevated from subgenus to genus level; (iii) two new species, Paraproterodiplostomum currani n. g., n. sp. and Archaeodiplostomum overstreeti n. sp., are described from the American alligator in Mississippi, USA. Comparison of the structure of terminal ducts of the reproductive system in all proterodiplostomid genera did not support the use of these structures for differentiation among subfamilies (or major clades) within the family, although they proved to be useful for distinguishing among genera and species. Our study includes the first report of proterodiplostomids from Australia and the first evidence of a snake acting as a paratenic host for a proterodiplostomid. A key to proterodiplostomid genera is provided. Questions of proterodiplostomid-host associations parasitic in crocodilians are discussed in connection with their historical biogeography. Our molecular phylogeny of the Proterodiplostomidae closely matches the current molecular phylogeny of crocodilians. Directions for future studies of the Proterodiplostomidae are outlined.
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Affiliation(s)
- Vasyl V Tkach
- Department of Biology, University of North Dakota, 10 Cornell Street, Grand Forks, North Dakota, 58202, USA.
| | - Tyler J Achatz
- Department of Biology, University of North Dakota, 10 Cornell Street, Grand Forks, North Dakota, 58202, USA
| | - Eric E Pulis
- Department of Science and Mathematics, Northern State University, Aberdeen, South Dakota, 57401, USA
| | - Kerstin Junker
- Epidemiology, Parasites and Vectors, ARC-Onderstepoort Veterinary Institute, Onderstepoort, 0110, South Africa
| | - Scott D Snyder
- College of Science and Engineering, Idaho State University, Pocatello, Idaho, USA
| | - Jeffrey A Bell
- Department of Biology, University of North Dakota, 10 Cornell Street, Grand Forks, North Dakota, 58202, USA
| | - Ali Halajian
- DSI-NRF SARChI Chair (Ecosystem Health), Department of Biodiversity, University of Limpopo, Private Bag X1106, Sovenga, 0727, South Africa
| | - Francisco Tiago de Vasconcelos Melo
- Laboratory of Cell Biology and Helminthology "Prof. Dr. Reinalda Marisa Lanfredi", Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
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Bouguerche C, Tazerouti F, Gey D, Justine JL. No vagina, one vagina, or multiple vaginae? An integrative study of Pseudaxine trachuri (Monogenea, Gastrocotylidae) leads to a better understanding of the systematics of Pseudaxine and related genera. Parasite 2020; 27:50. [PMID: 32808922 PMCID: PMC7433403 DOI: 10.1051/parasite/2020046] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 07/24/2020] [Indexed: 11/14/2022] Open
Abstract
The presence/absence and number of vaginae is a major characteristic for the systematics of the Monogenea. Three gastrocotylid genera share similar morphology and anatomy but are distinguished by this character: Pseudaxine Parona & Perugia, 1890 has no vagina, Allogastrocotyle Nasir & Fuentes Zambrano, 1983 has two vaginae, and Pseudaxinoides Lebedev, 1968 has multiple vaginae. In the course of a study of Pseudaxine trachuri Parona & Perugia 1890, we found specimens with structures resembling "multiple vaginae"; we compared them with specimens without vaginae in terms of both morphology and molecular characterisitics (COI barcode), and found that they belonged to the same species. We also investigated the male copulatory organ (MCO) of this species, the accuracy of the original description of which is known to be a matter of debate. We found that the genital atrium is armed with 12 hooks arranged as a single circle and a central hollow stylet which is probably involved in traumatic insemination. We redescribed Pseudaxine trachuri based on newly collected specimens from off the coast of Algeria and Museum specimens from off France. Specimens from the type-host, Trachurus trachurus, were found to be similar, for both molecular sequences and morphology, to those found on Boops boops. We can therefore confirm, for the first time with molecular evidence, that B. boops is a host of this parasite. We consider that Pseudaxinoides was erected on the basis of an erroneous interpretation of structures which are not vaginae and, consequently, propose the transfer of most of its species to Pseudaxine, as P. australis (Lebedev, 1968) n. comb., P. bychowskyi (Lebedev, 1977) n. comb., P. caballeroi (Lebedev, 1977) n. comb., P. cariacoensis (Nasir & Fuentes-Zambrano, 1983) n. comb., and P. vietnamensis (Lebedev, Parukhin & Roitman, 1970) n. comb. We also propose Allogastrocotyle dillonhargisorum nom. nov. for Pseudaxine bivaginalis Dillon & Hargis, 1965 to avoid a secondary homonymy.
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Affiliation(s)
- Chahinez Bouguerche
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Université des Sciences et de la Technologie Houari Boumediene, Faculté des Sciences Biologiques, Laboratoire de Biodiversité et Environnement: Interactions – Génomes BP 32, El Alia Bab Ezzouar 16111 Alger Algérie
| | - Fadila Tazerouti
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Université des Sciences et de la Technologie Houari Boumediene, Faculté des Sciences Biologiques, Laboratoire de Biodiversité et Environnement: Interactions – Génomes BP 32, El Alia Bab Ezzouar 16111 Alger Algérie
| | - Delphine Gey
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Service de Systématique Moléculaire, UMS 2700 CNRS, Muséum National d’Histoire Naturelle, Sorbonne Universités 43 Rue Cuvier, CP 26 75231 Paris Cedex 05 France
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UMR7245 MCAM, Muséum National d’Histoire Naturelle 61, Rue Buffon, CP52 75231 Paris Cedex 05 France
| | - Jean-Lou Justine
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Institut Systématique Évolution Biodiversité (ISYEB), Muséum National d’Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles 57 Rue Cuvier, CP 51 75231 Paris Cedex 05 France
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Gilardoni C, Etchegoin J, Cribb T, Pina S, Rodrigues P, Diez ME, Cremonte F. Cryptic speciation of the zoogonid digenean Diphterostomum flavum n. sp. demonstrated by morphological and molecular data. Parasite 2020; 27:44. [PMID: 32553099 PMCID: PMC7301638 DOI: 10.1051/parasite/2020040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 05/23/2020] [Indexed: 11/20/2022] Open
Abstract
Diphterostomum brusinae (Zoogonidae) is a digenean species that has been recorded worldwide parasitizing marine fishes. Several species have been synonymized with D. brusinae because they lack conspicuous morphological differences. However, due to the breadth of its geographic distribution and the variety of hosts involved in the life cycles, it is likely to be an assemblage of cryptic species. Diphterostomum flavum n. sp. is described here as a morphologically cryptic relative of D. brusinae, in the fish Pinguipes brasilianus (Pinguipedidae) off the Patagonian coast, Southwestern Atlantic Ocean, and its life cycle is elucidated through morphology and molecular analysis. This species uses the gastropod Buccinanops deformis (Nassariidae) as first and second intermediate host with metacercariae encysting within sporocysts. They also, however, use the polychaete Kinbergonuphis dorsalis (Onuphidae) as second intermediate host. No morphological differences were found between adults of D. flavum n. sp. and D. brusinae; however, the number of penetration glands of the cercariae, a diagnostic feature, differed (9 vs. 3 pairs), as well as the ITS2 sequences for the two species. This work provides morphological and molecular evidence of cryptic diversification among species described as D. brusinae, in which the only clear differences are in larval morphology and host spectrum. The strict specificity to the snail acting as the first intermediate host and the variety of fishes with different feeding habits acting as definitive hosts support the likely existence of multiple cryptic species around the world.
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Affiliation(s)
- Carmen Gilardoni
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Laboratorio de Parasitología, Instituto de Biología de Organismos Marinos (CCT CONICET-CENPAT) Boulevard Brown 2915 U9120ACF Puerto Madryn Argentina
| | - Jorge Etchegoin
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Laboratorio de Parasitología, IIPROSAM – Instituto de Investigaciones en Producción Sanidad y Ambiente, FCEyN, Universidad Nacional de Mar del Plata – CONICET Juan B. Justo 2550 7600 Mar del Plata Argentina
| | - Thomas Cribb
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School of Biological Sciences, The University of Queensland Brisbane 4072 Queensland Australia
| | - Susana Pina
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Laboratorio de Sanidade, ICBAS – Instituto de Ciencias Biomédicas Abel Salazar, Universidade do Porto R. Jorge de Viterbo Ferreira 228 4050-313 Porto Portugal
| | - Pedro Rodrigues
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Laboratorio de Sanidade, ICBAS – Instituto de Ciencias Biomédicas Abel Salazar, Universidade do Porto R. Jorge de Viterbo Ferreira 228 4050-313 Porto Portugal
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Laboratorio de Imunidade Inata e Ferro, I3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto R. Alfredo Allen 4200-135 Porto Portugal
| | - María Emilia Diez
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Laboratorio de Parasitología, Instituto de Biología de Organismos Marinos (CCT CONICET-CENPAT) Boulevard Brown 2915 U9120ACF Puerto Madryn Argentina
| | - Florencia Cremonte
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Laboratorio de Parasitología, Instituto de Biología de Organismos Marinos (CCT CONICET-CENPAT) Boulevard Brown 2915 U9120ACF Puerto Madryn Argentina
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Leite LAR, Pelegrini LS, Azevedo RKD, Abdallah VD. A new species of Tereancistrum (Monogenea: Dactylogyridae), parasite of Prochilodus lineatus (Characiformes: Prochilodontidae) from southeast Brazil. Rev Bras Parasitol Vet 2020; 29:e017019. [PMID: 32428185 DOI: 10.1590/s1984-29612020024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
A new species of Tereancistrum Kritsky, Thatcher & Kayton, 1980 collected of Prochilodus lineatus gills from the Batalha River, Tietê-Batalha basin, São Paulo State, Brazil is described. The new species can be distinguished from its congeners mainly by the configuration of the ventral bar, which has an anvil-shaped characteristic with corrugated anterior projection. Tereancistrum takemotoi n. sp. is morphologically similar to T. toksonum Lizama, Takemoto & Pavanelli, 2004 in terms of their dorsal bars (Y-shaped), their dorsal anchors with divergent roots (superficial and deep) wherein their deep root rather elongated, and by the fact that they both have the male copulatory organ counterclockwise. However, only T. takemotoi n. sp. presents the male copulatory organ with 2¼ rings and shows undulations in the anterior margin of the dorsal bar. These undulations are absent in T. toksonum (which only has 1¼ rings). This is the fourth Tereancistrum species described for P. lineatus and the first described for the region from the Tietê-Batalha basin.
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Affiliation(s)
| | | | | | - Vanessa Doro Abdallah
- Programa de Pós-graduação em Análise de Sistemas Ambientais, Centro Universitário CESMAC, Maceió, AL, Brasil
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43
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Hernández-Orts JS, Capasso S, Pinacho-Pinacho CD, García-Varela M. Morphological and molecular characterization of Maritrema kostadinovae n. sp. (Digenea: Microphallidae) from the yellow-crowned night heron Nyctanassa violacea (Aves: Ardeidae) in Mexico. Parasitol Res 2020; 119:1785-1793. [PMID: 32318808 DOI: 10.1007/s00436-020-06682-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 03/26/2020] [Indexed: 11/27/2022]
Abstract
A new species of microphallid trematode was collected from the intestine of the yellow-crowned night heron Nyctanassa violacea (L.) (Pelecaniformes: Ardeidae) from Veracruz, Mexico. Maritrema kostadinovae n. sp. differs distinctly from other members of Maritrema Nicoll, 1907 from the Americas by its smaller body size (262-435 × 242-363 μm), the extension of caeca (reaching to anterior level of ventral sucker), the size and shape of the cirrus (short, tubular and unarmed) and metraterm (simple and thin-walled), the position of the genital pore (sinistrolateral to ventral sucker) and the arrangement of the vitellaria (horseshoe-shaped with posteriorly directed opening). Maximum likelihood and Bayesian inference analyses, based on partial 28S rDNA sequences, depicted M. kostadinovae n. sp. within the genus Maritrema with strong support. The new species is in a sister position to other available members of Maritrema, except for M. subdolum Jägerskiöld, 1909 that branches as the early divergent species in the Maritrema clade. The new species is the third species of Maritrema described from birds in Mexico. Comparative morphometric data for Maritrema taxa from birds and mammals from the Americas is provided.
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Affiliation(s)
- Jesús S Hernández-Orts
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic.
| | - Sofía Capasso
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), FCNyM, UNLP, CONICET, Boulevard 120 entre Av. 60 y Calle 64, 1900, La Plata, Argentina
| | - Carlos D Pinacho-Pinacho
- Cátedras CONACyT, Instituto de Ecología, A.C., Red de Estudios Moleculares Avanzados, Carretera antigua a Coatepec 351, El Haya, 91070, Xalapa, Veracruz, Mexico
| | - Martín García-Varela
- Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), Avenida Universidad 3000, Ciudad Universitaria, 04510, Ciudad de México, Mexico
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44
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Cohen SC, Justo MCN, Gen DVS, Boeger WA. Dactylogyridae (Monogenoidea, Polyonchoinea) from the gills of Auchenipterus nuchalis (Siluriformes, Auchenipteridae) from the Tocantins River, Brazil. Parasite 2020; 27:4. [PMID: 31967542 PMCID: PMC6975207 DOI: 10.1051/parasite/2020002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 01/06/2020] [Indexed: 11/15/2022] Open
Abstract
Two species of Cosmetocleithrum Kritsky, Thatcher & Boeger, 1986 (both new) and two species of Demidospermus Suriano, 1983 (one new) are reported from the gills of the catfish Auchenipterus nuchalis, popularly known as "mapará", from the Tocantins River and tributaries, North Region of Brazil. Cosmetocleithrum berecae n. sp. differs from all other species presently known in the genus by the morphology of the anchors presenting an elongate shaft and short recurved point, a coiled male copulatory organ (MCO) with three rings, and an elongate slender accessory piece with a bifurcated distal end. Cosmetocleithrum nunani n. sp. differs from its congeners by the combination of the following features: (1) Ventral and dorsal anchors with moderately long curved shaft and short point; (2) Hooks with poorly developed thumb; (3) Hook pairs 5 and 6 similar to each other, but morphologically distinct from remaining hook pairs; and (4) MCO coiled, with approximately 1.5 rings. Demidospermus tocantinensis n. sp. is easily distinguished from other species of the genus by presenting an inverted-G-shaped MCO with a median knee-like expansion. Demidospermus osteomystax Tavernari, Takemoto, Lacerda & Pavanelli, 2010 is redescribed based on paratypes and specimens from the gills of A. nuchalis from the Tocantins River, a new host and locality records for this species. The monotypic Paracosmetocleithrum Acosta, Scholz, Blasco-Costa, Alves & Silva, 2017, the only other Neotropical genus reported in siluriforms besides Cosmetocleithrum with species presenting two ribbon-like projections on the posterior margin of the dorsal bar, is considered a junior subjective synonym of Cosmetocleithrum.
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Affiliation(s)
- Simone C. Cohen
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Laboratório de Helmintos Parasitos de Peixes, Instituto Oswaldo Cruz, FIOCRUZ Av. Brasil, 4365 Rio de Janeiro RJ 21045-900 Brazil
| | - Marcia C. N. Justo
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Laboratório de Helmintos Parasitos de Peixes, Instituto Oswaldo Cruz, FIOCRUZ Av. Brasil, 4365 Rio de Janeiro RJ 21045-900 Brazil
| | - Daniele V. S. Gen
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Laboratório de Helmintos Parasitos de Peixes, Instituto Oswaldo Cruz, FIOCRUZ Av. Brasil, 4365 Rio de Janeiro RJ 21045-900 Brazil
| | - Walter A. Boeger
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Biological Interactions, Universidade Federal do Paraná Curitiba PR 81531-980 Brazil
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Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq SHIS QI 01 Brasília 71.605-001 Brazil
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45
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Van NTB, Cuong NV, Yen NTP, Nhi NTH, Kiet BT, Hoang NV, Hien VB, Thwaites G, Carrique-Mas JJ, Ribas A. Characterisation of gastrointestinal helminths and their impact in commercial small-scale chicken flocks in the Mekong Delta of Vietnam. Trop Anim Health Prod 2020; 52:53-62. [PMID: 31267344 PMCID: PMC6969868 DOI: 10.1007/s11250-019-01982-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 06/13/2019] [Indexed: 01/24/2023]
Abstract
Commercial small-scale chicken farms managed as all-in-all-out but operating with low standards of hygiene/biosecurity are increasingly common in Vietnam. These conditions facilitate the transmission of gastrointestinal helminths. However, there are no published data on helminths in these systems. We aimed (1) to determine the prevalence/burden of gastrointestinal helminths in small-scale commercial flocks in the Mekong Delta region and (2) to investigate the association between worm burdens and birds' weight and disease status. Randomly selected chickens (n = 120) from 'normal' flocks were investigated at the end of their production cycle (~ 18 weeks), as well as 90 chickens from 'diseased' flocks with signs of respiratory and/or severe disease. The gastrointestinal tract of chickens was dissected and all visible helminths were identified and counted. A total of 54.2% and 54.4% normal and diseased chickens contained helminths. Among colonised birds, the diseased ones harboured a higher mass of helminth worms than normal (healthy) birds (3.8 ± SD 8.6 g vs. 1.9 ± SD 6.3 g, respectively). Eight species were identified, including nematodes (Ascaridia galli, Cheilospirura hamulosa and Heterakis gallinarum), cestodes (Hymenolepis, Raillietina cesticillus, Raillietina echinobothrida, Raillietina tetragona,) and one trematode (Echinostomatidae). Heterakis gallinarum was the most prevalent helminth (43.3% and 42.2% in normal and sick chickens, respectively), followed by A. galli (26.7% and 41.1%). Colonised chickens weighed 101.5 g less than non-colonised birds. Colonisation was higher during the rainy months (May-November) for both H. gallinarum and A. galli. Anthelminthic usage was not associated with reduced helminth burdens. We recommend upgrading cleaning and disinfection and limiting access to ranging areas to control helminths in small-scale chicken flocks.
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Affiliation(s)
- Nguyen T B Van
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, 764, Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam
| | - Nguyen V Cuong
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, 764, Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam
| | - Nguyen T P Yen
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, 764, Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam
| | - Nguyen T H Nhi
- Sub-Department of Animal Health and Production, 326-328 Dien Bien Phu, Cao Lanh, Dong Thap, Vietnam
| | - Bach Tuan Kiet
- Sub-Department of Animal Health and Production, 326-328 Dien Bien Phu, Cao Lanh, Dong Thap, Vietnam
| | - Nguyen V Hoang
- Sub-Department of Animal Health and Production, 326-328 Dien Bien Phu, Cao Lanh, Dong Thap, Vietnam
| | - Vo B Hien
- Sub-Department of Animal Health and Production, 326-328 Dien Bien Phu, Cao Lanh, Dong Thap, Vietnam
| | - Guy Thwaites
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, 764, Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam
- Nuffield Department of Medicine, Oxford University, Old Road Campus, Headington, Oxford, UK
| | - Juan J Carrique-Mas
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, 764, Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam.
- Nuffield Department of Medicine, Oxford University, Old Road Campus, Headington, Oxford, UK.
| | - Alexis Ribas
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague, Czech Republic
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46
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Atopkin DM, Besprozvannykh VV, Ha DN, Nguyen VH, Nguyen VT. New species and new genus of Pseudohaploporinae (Digenea): Pseudohaploporus pusitestis sp. n. and Parahaploporus elegantus n. g., sp. n. (Digenea: Pseudohaploporinae) from Vietnamese mullet fish. Parasitol Int 2019; 75:102023. [PMID: 31715266 DOI: 10.1016/j.parint.2019.102023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 11/04/2019] [Accepted: 11/07/2019] [Indexed: 11/17/2022]
Abstract
Two new species of Pseudohaploporinae, Pseudohaploporus pusitestis sp. n. and Parahaploporus elegantus n. g., sp. n., are described from intestines of the Vietnamese mullet fish Moolgarda seheli and Osteomugil cunnesius, respectively. Pseudohaploporus pusitestis sp. n. differs from two known Pseudohaploporus species, P. vietnamensis and P. planiliza, by the absence of a diverticulate hermaphroditic duct and muscular sphincters at the proximal end of the hermaphroditic sac. Metrically, P. pusitestis sp. n. is close to P. vietnamensis and differs from this species and from P. planilizum by lower maximum sizes of most parameters. Parahaploporus elegantus n. g., sp. differs from representatives of Pseudohaploporus by the presence of a single testis and the armament of hermaphroditic duct and is morphologically close to trematodes of the genus Haploporus. However, P. elegantus n. g differs from all known Haploporus species from mugilids of the Indo-West Pacific by the structure of the armament of the hermaphroditic duct and also by size of body, organs and eggs. The validity of designating two new species and a new genus of trematodes is supported by ITS and 28S rDNA sequence data. Phylogenetic reconstructions showed that the new trematodes belong to the Pseudohaploporinae, which formed a well-supported cluster within the monophyletic Haploporidae.
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Affiliation(s)
- D M Atopkin
- Federal Scientific Center of East Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690022 Vladivostok, Russia; Department of Cell Biology and Genetics, Far Eastern Federal University, 690051, Ajax-10 str, Vladivostok, Russia.
| | - V V Besprozvannykh
- Federal Scientific Center of East Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690022 Vladivostok, Russia
| | - D N Ha
- Institute of Ecology and Biological Resources, Vietnamese Academy of Sciences and Technology, Hanoi, Viet Nam
| | - V H Nguyen
- Institute of Ecology and Biological Resources, Vietnamese Academy of Sciences and Technology, Hanoi, Viet Nam
| | - V T Nguyen
- Hai Duong Medical Technical University, Hanoi, Viet Nam
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47
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Dutton HR, Warren MB, Bullard SA. New Genus and Species of Turtle Blood Fluke (Platyhelminthes: Digenea: Schistosomatoidea) Infecting Six-Tubercled Amazon River Turtles, Podocnemis sextuberculata (Pleurodira: Podocnemididae) from the Amazon River Basin (Peru). J Parasitol 2019; 105:671-685. [PMID: 31566518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023] Open
Abstract
Herein we describe a new species of turtle blood fluke (TBF) and propose a new genus to accommodate it, Pitiutrema revelae n. gen., n. sp. This blood fluke infects the heart of six-tubercled Amazon River turtles (Podocnemis sextuberculata [Cornalia, 1849] [Pleurodira: Podocnemididae]) in the headwaters of the Amazon River near Iquitos, Peru. It resembles the other 2 described species of South American freshwater TBFs (Atamatam amazoniensis Bullard and Roberts, 2019, and Paratamatam iquitosiensis Bullard and Roberts, 2019) by having a dorsoventrally flattened and ovoid body, an oral sucker with anteroventral spines, 2 inter-cecal testes arranged in a column, inter-gonadal terminal genitalia, an inter-cecal and post-ovarian Laurer's canal pore, and a Y-shaped excretory bladder. It differs from all other nominal TBFs by having the combination of an aspinose body that lacks mammillae, a tapered (not broadly rounded) posterior body end, a ventral sucker, slightly M-shaped or inverse U-shaped ceca, a deeply-lobed (dendritic) ovary, a transverse uterus, and a dispersed vitellarium. The new genus is further unique among TBF genera by having an anterior to posterior sequence of ventral sucker, anterior testis, ovary, cirrus sac (lateral to posterior half of ovary), and posterior testis. The phylogenetic results and placement of the new taxon (1) were both predicted by our morphological diagnosis and comparisons with related taxa, (2) further indicated monophyly of the nominal South American freshwater TBFs, (3) reaffirmed the marine derived lineage identity of the nominal South American freshwater TBFs, and (4) highlighted that the single cercarial sequence (TBF sp. W-810) from an ampullariid in Brazil does not share a recent common ancestor with any of the nominal South American freshwater TBFs. The new species is the eighth TBF reported from a side-necked turtle (Pleurodira), the first TBF from a member of Podocnemididae, and the third freshwater TBF from South America.
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Affiliation(s)
- Haley R Dutton
- Aquatic Parasitology Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, Alabama, 36849
| | - Micah B Warren
- Aquatic Parasitology Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, Alabama, 36849
| | - Stephen A Bullard
- Aquatic Parasitology Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, Auburn, Alabama, 36849
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48
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Velázquez-Urrieta Y, Oceguera-Figueroa A, León-Règagnon V. Two New Species of Haematoloechus (Digenea: Plagiorchidae) Parasitizing Rana brownorum (Amphibia: Ranidae) from Southeast Mexico. J Parasitol 2019; 105:724-732. [PMID: 31580787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023] Open
Abstract
In an ongoing investigation on the helminths of amphibians in southeastern Mexico, specimens of 2 undescribed species of Haematoloechus were collected from Rana brownorum. Haematoloechus ceciliae n. sp. is morphologically most similar to Haematoloechus meridionalis, but differs in the shape of the oral sucker, in the nature of the acetabulum, and in the distribution of the glandular cells in the pharyngeal region; Haematoloechus celestunensis n. sp. closely resembles Haematoloechus floedae, but differs in the form and size of the testes and measurements of acetabulum. COI and 28S DNA sequences of both new species show high divergence compared to other species of the genus. In the phylogenetic trees, H. ceciliae appears most closely related to Haematoloechus danbrooksi and H. celestunensis to Haematoloechus veracruzanus.
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Affiliation(s)
- Yanet Velázquez-Urrieta
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Ciudad Universitaria, Coyoacán, Cuidad de México, México, CP 04510
- Laboratorio de Helmintología, Instituto de Biología, Universidad Nacional Autónoma de México, Tercer circuito exterior s/n, Ciudad Universitaria, Copilco, Coyoacán, Cuidad de México, México, CP 04510
| | - Alejandro Oceguera-Figueroa
- Laboratorio de Helmintología, Instituto de Biología, Universidad Nacional Autónoma de México, Tercer circuito exterior s/n, Ciudad Universitaria, Copilco, Coyoacán, Cuidad de México, México, CP 04510
| | - Virginia León-Règagnon
- Estacion de Biología Chamela Instituto de Biología, Universidad Nacional Autónoma de México, A. P. 21, San Patricio, Jalisco, México, CP 48980
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Achatz TJ, Dmytrieva I, Kuzmin Y, Tkach VV. Phylogenetic Position of Codonocephalus Diesing, 1850 (Digenea, Diplostomoidea), an Unusual Diplostomid with Progenetic Metacercariae. J Parasitol 2019; 105:821-826. [PMID: 31670613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023] Open
Abstract
Codonocephalus is a monotypic genus of diplostomid digeneans and is the only genus in the sub-family Codonocephalinae. The type-species Codonocephalus urniger has an unusual progenetic metacercaria that uses frogs as intermediate hosts and can use snakes as paratenic hosts. Adult C. urniger parasitize ardeid wading birds in the Palearctic. Despite the broad distribution of Codonocephalus, no DNA sequence data are currently available for the genus. In this study, we generated sequence data for nuclear ribosomal and mitochondrial DNA from progenetic metacercaria of the type-species C. urniger from marsh frog, Pelophylax ridibundus, collected in Ukraine. We used partial sequences of the nuclear ribosomal 28S gene to examine for the first time the phylogenetic position of Codonocephalus among the Diplostomoidea.
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Affiliation(s)
- Tyler J Achatz
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202
| | - Ivanna Dmytrieva
- I. I. Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, 15 Bogdan Khmelnitsky Street, Kyiv, Ukraine
| | - Yuriy Kuzmin
- I. I. Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, 15 Bogdan Khmelnitsky Street, Kyiv, Ukraine
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom campus, Private Bag X6001, Potchefstroom 20520, South Africa
| | - Vasyl V Tkach
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202
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Achatz TJ, Curran SS, Patitucci KF, Fecchio A, Tkach VV. Phylogenetic Affinities of Uvulifer Spp. (Digenea: Diplostomidae) in the Americas with Description of Two New Species from Peruvian Amazon. J Parasitol 2019; 105:704-717. [PMID: 31580785 PMCID: PMC7584121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023] Open
Abstract
Uvulifer Yamaguti, 1934, is a genus of diplostomoidean digeneans that parasitizes kingfishers worldwide. Species have a Neascus-type metacercaria that encysts in or on fish intermediate hosts, often causing black spot disease. Only 3 prior studies published DNA sequence data for Uvulifer species with only 1 including a single named species (Uvulifer spinatus López-Jiménez, Pérez-Ponce de León, & García-Varela, 2018). Herein we describe 2 new species of Uvulifer from the green-and-rufous kingfisher, Chloroceryle inda (Linnaeus), collected in Peru ( Uvulifer batesi n. sp. and Uvulifer pequenae n. sp.). Both new species are readily differentiated from their New World congeners by a combination of morphological characters including distribution of vitelline follicles and prosoma:opisthosoma length ratios. In addition, we used newly generated nuclear 28S rRNA and mitochondrial COI gene sequence data to differentiate among species and examine phylogenetic affinities of Uvulifer. This includes the 2 new species and Uvulifer ambloplitis (Hughes, 1927), as well as Uvulifer elongatus Dubois, 1988 , Uvulifer prosocotyle (Lutz, 1928), and Uvulifer weberi Dubois, 1985 , none of which have been part of prior molecular phylogenetic studies. Our data on Uvulifer revealed 0.1-2.2% interspecific divergence in 28S sequences and 9.3-15.3% in COI sequences. Our 28S phylogeny revealed at least 6 well-supported clades within the genus. In contrast, the branch topology in the COI phylogenetic tree was overall less supported, indicating that although COI sequences are a great tool for species differentiation, they should be used with caution for phylogenetic inference at higher taxonomic levels. Our 28S phylogeny did not reveal any clear patterns of host association between Uvulifer and particular species of kingfishers; however, it identified 2 well-supported clades uniting Uvulifer species from distant geographical locations and more than 1 biogeographic realm, indicating at least 2 independent dispersal events in the evolutionary history of the New World Uvulifer. Our results clearly demonstrate that the diversity of Uvulifer in the New World has been underestimated.
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Affiliation(s)
- Tyler J Achatz
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202
| | - Stephen S Curran
- Division of Coastal Sciences, University of Southern Mississippi, 703 East Beach Drive, Ocean Springs, Mississippi 39564
| | - Kaylyn F Patitucci
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202
| | - Alan Fecchio
- Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Universidade Federal de Mato Grosso, Cuiabá, MT 78060900, Brazil
| | - Vasyl V Tkach
- Department of Biology, University of North Dakota, Starcher Hall, 10 Cornell Street Stop 9019, Grand Forks, North Dakota 58202
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