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Tietze E, Bellusci A, Cañal V, Cringoli G, Beltrame MO. Gastrointestinal parasite assemblages from the wild rodent capybara ( Hydrochoerus hydrochaeris) inhabiting a natural protected area from Argentina. J Helminthol 2023; 97:e97. [PMID: 38088355 DOI: 10.1017/s0022149x23000767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Knowledge about parasitic diseases of wildlife will help us to understand the dynamics of parasites and their effects on host populations. The capybara (Hydrochoerus hydrochaeris) is the largest living rodent in the world, and its distribution is associated with the presence of tropical and subtropical wetlands in South America. The Los Padres Lake Integral Reserve (LPLIR) is an important conservation zone in the pampean region of Argentina. One of the emblematic species found within the reserve is the capybara. The objective of this study was to determine the gastrointestinal parasites present in wild capybaras of the LPLIR and to compare different coprological methodologies. Free-ranging capybara fresh feces from 57 individuals were randomly collected from the area of LPLIR in the summer of 2022. Three different techniques were applied: spontaneous sedimentation technique (SS), INTA modified McMaster technique (MM), and Mini-FLOTAC (MF) technique. Fifty-six samples from all samples analysed (56/57, 98%) were found to be positive for gastrointestinal parasites. Two species of Strongylida, Protozoophaga obesa, Echinocoleus hydrochaeris, one unidentified nematode, one unidentified spirurid, and at least two morphotypes of Eimeria spp. oocysts were recorded. There were found significant differences in the proportion of positive samples and in richness by technique, but no significant differences were found in parasite counting. In conclusion, the choice of methodology depends on the specific objectives of the study. This is the first parasitological study of capybaras from the LPLIR and represents an exploration of parasite communities present in these wild rodents at their southernmost distribution.
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Affiliation(s)
- E Tietze
- Paleoparasitología. Instituto de Investigaciones en Producción, Sanidad y Ambiente (IIPROSAM), Facultad de Ciencias Exactas y Naturales, UNMdP-CONICET, Juan B. Justo 2250, CP 7600, Mar del Plata, Buenos Aires, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - A Bellusci
- Paleoparasitología. Instituto de Investigaciones en Producción, Sanidad y Ambiente (IIPROSAM), Facultad de Ciencias Exactas y Naturales, UNMdP-CONICET, Juan B. Justo 2250, CP 7600, Mar del Plata, Buenos Aires, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - V Cañal
- Paleoparasitología. Instituto de Investigaciones en Producción, Sanidad y Ambiente (IIPROSAM), Facultad de Ciencias Exactas y Naturales, UNMdP-CONICET, Juan B. Justo 2250, CP 7600, Mar del Plata, Buenos Aires, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - G Cringoli
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II of Naples, Naples, Italy
| | - M O Beltrame
- Paleoparasitología. Instituto de Investigaciones en Producción, Sanidad y Ambiente (IIPROSAM), Facultad de Ciencias Exactas y Naturales, UNMdP-CONICET, Juan B. Justo 2250, CP 7600, Mar del Plata, Buenos Aires, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
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Flores VR, Hernández-Orts JS, Viozzi GP. A new species of Notocotylus (Digenea: Notocotylidae) from the black-necked swan Cygnus melancorhyphus (Molina) of Argentina. Vet Parasitol Reg Stud Reports 2023; 45:100925. [PMID: 37783528 DOI: 10.1016/j.vprsr.2023.100925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/14/2023] [Accepted: 08/22/2023] [Indexed: 10/04/2023]
Abstract
Notocotylus cygni n. sp. is described here, taken from the intestine of the black-necked swan Cygnus melancoryphus (Molina) of Patagonia, Argentina. This new species differs from other members of the genus Notocotylus by having the genital pore anterior to the caecal bifurcation (located slightly posterior to oral sucker) and the unequal number and arrangement of ventral papillae (2-3 in the lateral rows and 10-12 in the median row). Phylogenetic analyses of the 28S and ITS1-5.8S ribosomal DNA (rRNA) sequences of the new species and other notocotylid trematodes available in GenBank indicate that N. cygni n. sp. is a sister taxon of Notocotylus fosteri Kinsella et Tkach, 2005, a trematode of the intestine of the rice rat Oryzomys palustris of Florida, United States. The new species differs from N. fosteri in the unequal number and arrangement of ventral papillae, number of uterine loops, size of the egg, definitive hosts (birds vs. mammals), and disparate environment and geographical distribution (freshwater environment in Patagonia vs. salt marsh in North America). This is the eighth species of Notocotylus reported from birds in Argentina, and the ninth species from the family Notocotylidae recorded in black-necked swans in South America.
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Affiliation(s)
- Verónica Roxana Flores
- Laboratorio de Parasitología, INIBIOMA (CONICET-Universidad Nacional del Comahue), San Carlos de Bariloche, Río Negro, Argentina.
| | - Jesús Servando Hernández-Orts
- Natural History Museum, London, United Kingdom; Biology Centre, Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Gustavo Pedro Viozzi
- Laboratorio de Parasitología, INIBIOMA (CONICET-Universidad Nacional del Comahue), San Carlos de Bariloche, Río Negro, Argentina
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Assis JCA, Pinto HA. Biomphalaria straminea as an Intermediate Host of a Renal Trematode Species of the Genus Tanaisia (Trematoda: Eucotylidae) in Brazil. Acta Parasitol 2023; 68:282-287. [PMID: 36705769 DOI: 10.1007/s11686-023-00660-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 01/02/2023] [Indexed: 01/28/2023]
Abstract
PURPOSE Eucotylid trematodes are parasites of the urinary system of birds with a cosmopolitan distribution. Despite the importance of these flukes, fundamental aspects of their biology, such as intermediate hosts and larval morphology, are poorly known. Herein, the potential involvement of aquatic mollusks in the transmission of a species of Tanaisia is reported for the first time. METHODS During the search of non-emergent larval stages of trematodes in mollusks collected from an urban waterbody from Brazil in February of 2021, 1 out of 18 specimens (5.5%) of Biomphalaria straminea was found harboring sporocysts, cercariae and encysted metacercariae morphologically compatible with those described for eucotylid species. Sequences generated for 28S, ITS-2, and cox1 molecular markers were compared with sequences available in GenBank and subjected to phylogenetic analyses. RESULTS Molecular analyses revealed parasite affiliation with members of the genus Tanaisia, given it groped in a strongly supported clade with species of this genus included in the 28S phylogenetic tree. The larvae tentatively identified as Tanaisia sp. can be conspecific with an unpublished isolate of Tanaisia valida found in birds in South Brazil (100% similarity in 28S and ITS-2). CONCLUSION Biomphalaria straminea is reported as a natural host of a species of Tanaisia for the first time. This finding highlights the possibility, so far unknown, of transmission of species of the family Eucotylidae in aquatic environments.
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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, Av. Pres. Antônio Carlos, 6627, Postal Box 486, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Hudson A Pinto
- Laboratório de Biologia de Trematoda, Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos, 6627, Postal Box 486, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
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Bagnato E, Gilardoni C, Lauthier JJ, Cremonte F. Paramonostomum deseado n. sp. (Digenea: Notocotylidae) parasitizing the South American Black Oystercatcher and their atypical life cycle from the Patagonian coast. Parasitology 2022; 149:1642-1651. [PMID: 36069076 PMCID: PMC11010188 DOI: 10.1017/s0031182022001159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 08/05/2022] [Accepted: 08/10/2022] [Indexed: 11/05/2022]
Abstract
By way of morphological and molecular analysis we describe a new species of notocotylid, Paramonostomum deseado n. sp., parasitizing Haematopus ater from Argentina and we contribute to elucidate its life cycle. Within this genus, 4 groups can be morphologically distinguished according to body shape: ‘Oval’, ‘Pyriform’, ‘Elongate’, ‘Overlong’. The new species belongs to the ‘Elongate group’, which presents a wide variation in body length (597–4500 μm). The new species, Paramonostomum caeci from Australia, Paramonostomum actitidis from the Caribbean and Paramonostomum alveoelongatum from Russia share the smallest range of body size in this group (<1130 μm). The new species more closely resembles P. actitidis but differs from it by cirrus-sac length, which is shorter in the new species (97–146 vs 280–430 μm in P. actitidis), and egg size which is larger in the new species (25–33 vs 18–20 μm in P. actitidis). Paramonostomum deseado n. sp. uses the limpet Nacella magellanica as both first and second intermediate hosts in which metacercariae encyst inside the redia. This is the first abbreviated cycle described for notocotylid species. Ribosomal RNA sequences provided for adults (ITS1, ITS2 and 28S) and metacercariae inside the rediae (ITS1) support the species identification and the correspondence among stages. Phylogenetic analysis based on 28S placed P. deseado n. sp. close to other Notocotylus spp. and Paramonostomum anatis. Molecular results demonstrate that the hosts involved in the life cycles and the habitat more than morphological differences are determining the phylogenetic relationships in members of Notocotylidae.
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Affiliation(s)
- Estefanía Bagnato
- Laboratorio de Investigaciones en Evolución y Biodiversidad (LIEB), Facultad de Ciencias Naturales y Ciencias de la Salud, Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Ruta Nacional N° 259, 16.4 km, (9200) Esquel, Chubut, Argentina
| | - Carmen Gilardoni
- Laboratorio de Parasitología (LAPA), Instituto de Biología de Organismos Marinos (IBIOMAR, CCT CONICET-CENPAT), Boulevard Brown 2915, (9120) Puerto Madryn, Chubut, Argentina
| | - Juan José Lauthier
- Facultad de Medicina, Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPaM), Universidad de Buenos Aires (UBA-CONICET), Paraguay 2155, Piso 12, (1121) Ciudad Autónoma de Buenos Aires, Argentina
| | - Florencia Cremonte
- Laboratorio de Parasitología (LAPA), Instituto de Biología de Organismos Marinos (IBIOMAR, CCT CONICET-CENPAT), Boulevard Brown 2915, (9120) Puerto Madryn, Chubut, Argentina
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Parasites Circulating in Wild Synanthropic Capybaras ( Hydrochoerus hydrochaeris): A One Health Approach. Pathogens 2021; 10:pathogens10091152. [PMID: 34578184 PMCID: PMC8467752 DOI: 10.3390/pathogens10091152] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/03/2021] [Accepted: 09/04/2021] [Indexed: 11/23/2022] Open
Abstract
Capybaras (Hydrochoerus hydrochaeris) are affected by a wide range of protozoan and metazoan-derived parasitic diseases. Among parasites of free-ranging capybaras are soil-, water-, food- and gastropod-borne parasitosis, today considered as opportunistic infections in semiaquatic ecosystems. The overlapping of the capybara’s natural ecological habitats with human and domestic animal activities has unfortunately increased in recent decades, thereby enhancing possible cross- or spillover events of zoonotic parasites. Due to this, three synanthropic wild capybara populations in the Orinoco Basin were studied for the occurrence of gastrointestinal parasite infections. A total of forty-six fecal samples were collected from free-ranging capybaras in close proximity to livestock farms. Macroscopical analyses, standard copromicroscopical techniques, coproELISA, PCR, and phylogenetic analysis revealed thirteen parasite taxa. In detail, the study indicates stages of five protozoans, four nematodes, one cestode, and three trematodes. Two zoonotic parasites were identified (i.e., Plagorchis muris, and Neobalantidium coli). The trematode P. muris represents the first report within South America. In addition, this report expands the geographical distribution range of echinocoelosis (Echinocoleus hydrochoeri). Overall, parasitological findings include two new host records (i.e., P. muris, and Entamoeba). The present findings collectively constitute baseline data for future monitoring of wildlife-derived anthropozoonotic parasites and call for future research on the health and the ecological impact of this largest semiaquatic rodent closely linked to humans, domestic and wild animals.
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Fitzpatrick DM, Tetnowski MA, Rosser TG, Pinckney RD, Marancik DP, Butler BP. GENETIC AND MORPHOLOGIC CHARACTERIZATION OF DIASCHISTORCHIS PANDUS (DIGENEA: PRONOCEPHALIDAE) TREMATODES EXTRACTED FROM HAWKSBILL TURTLES, ERETMOCHELYS IMBRICATA (TESTUDINES: CHELONIIDAE), IN GRENADA, WEST INDIES. J Parasitol 2021; 107:267-274. [PMID: 33784742 DOI: 10.1645/20-54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The hawksbill turtle Eretmochelys imbricata is a critically endangered species with a worldwide distribution. Limited information is available about the naturally occurring intestinal parasites of this species and what impact these parasites may have on the health of the hawksbill turtle. Diaschistorchis pandus was identified postmortem in 5 hawksbill turtles from Grenada, West Indies, using morphologic characterization. Sanger sequencing was performed for conserved ribosomal regions (5.8S, ITS2, 28S) and the mitochondrial cytochrome c oxidase subunit 1 gene (COI). Phylogenetic analysis of the 28S rRNA gene sequence data shows D. pandus clustering with other trematodes in the family Pronocephalidae, corroborating morphological classification. No genetic sequences have been previously reported for this trematode species, which has limited the collection of objective epidemiological data about this parasite of marine turtles.
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Affiliation(s)
- Daniel M Fitzpatrick
- Department of Pathobiology, School of Veterinary Medicine, St. George's University, P.O. Box 7, True Blue Campus, True Blue, St. George Parish, Grenada, West Indies
| | - Monica A Tetnowski
- Department of Pathobiology, School of Veterinary Medicine, St. George's University, P.O. Box 7, True Blue Campus, True Blue, St. George Parish, Grenada, West Indies
| | - Thomas G Rosser
- Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, P.O. Box 6100, Mississippi State, Mississippi 39762
| | - Rhonda D Pinckney
- Department of Pathobiology, School of Veterinary Medicine, St. George's University, P.O. Box 7, True Blue Campus, True Blue, St. George Parish, Grenada, West Indies
| | - David P Marancik
- Department of Pathobiology, School of Veterinary Medicine, St. George's University, P.O. Box 7, True Blue Campus, True Blue, St. George Parish, Grenada, West Indies
| | - Brian P Butler
- Department of Pathobiology, School of Veterinary Medicine, St. George's University, P.O. Box 7, True Blue Campus, True Blue, St. George Parish, Grenada, West Indies
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Hayashi K, Kitayama C, Saito T, Ohari Y, Hayashi K, Kondo S, Takashima Y, Kuroki T, Shibahara T, Itagaki T. Detection and molecular characteristics of Pyelosomum cochlear (Digenea: Pronocephalidae) in the urinary bladder of the green sea turtle (Chelonia mydas) in the Northwest Pacific Ocean. INFECTION GENETICS AND EVOLUTION 2021; 93:104962. [PMID: 34111570 DOI: 10.1016/j.meegid.2021.104962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 05/20/2021] [Accepted: 06/02/2021] [Indexed: 11/17/2022]
Abstract
The genus Pyelosomum consists of parasitic flukes occurring primarily in marine turtles; Pyelosomum cochlear Looss 1899 is the only species of this genus that parasitizes the urinary bladder. In this study, we detected flukes in the urinary bladders of 20 of 88 green sea turtles (Chelonia mydas) harvested in the Ogasawara Islands, in the Northwest Pacific Ocean. We identified the flukes as P. cochlear based on detailed morphological observations and comparisons of morphometric measurements of the species reported previously. Nucleotide sequences of nuclear ribosomal 18S and 28S regions and the mitochondrial cytochrome c oxidase subunit 1 (COI) region were determined for the flukes. The 18S and 28S phylogenetic trees revealed that the species of the superfamily Pronocephaloidea, including P. cochlear, constituted a single clade, but the species of the family Pronocephalidae did not constitute a single taxon. These findings suggest that Pronocephalidae is a paraphyletic group. The COI sequences of P. cochlear exhibited high genetic diversity, suggesting that they would be useful markers to understand the genetic structure of the parasite and its evolutionary relationship with the host turtle populations. This is the first study to provide the nucleotide sequences of Pyelosomum species; these data will be available for further molecular studies of this genus and its related taxa.
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Affiliation(s)
- Kei Hayashi
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Chiyo Kitayama
- Everlasting Nature of Asia (ELNA), Ogasawara Marine Center, Ogasawara, Tokyo 100-2101, Japan
| | - Taizo Saito
- The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, 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
| | - Kaoru Hayashi
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Satomi Kondo
- Everlasting Nature of Asia (ELNA), Ogasawara Marine Center, Ogasawara, Tokyo 100-2101, Japan
| | - Yasuhiro Takashima
- The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; Department of Veterinary Parasitological Diseases, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan
| | - Toshiro Kuroki
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Toshiyuki Shibahara
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Tadashi Itagaki
- Laboratory of Veterinary Parasitology, Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka 020-8550, Japan.
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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] [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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Xu G, Zhu P, Zhu W, Ma B, Li X, Li W. Characterization of the complete mitochondrial genome of Notocotylus sp. (Trematoda, Notocotylidae) and its phylogenetic implications. Parasitol Res 2021; 120:1291-1301. [PMID: 33559042 DOI: 10.1007/s00436-021-07075-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 01/28/2021] [Indexed: 01/20/2023]
Abstract
The parasite genus Notocotylus comprises at least 50 species colonizing mainly aquatic birds and to a lesser extent some mammals, particularly rodents. Here trematode specimens isolated from a wild black swan were characterized and identified to belong to the genus Notocotylus via morphological and molecular analyses. Phylogenetic position of the isolate among other trematodes was determined based on the ribosomal internal transcribed spacer (ITS) 1 and 2. The complete mitochondrial (mt) genome of the isolate was amplified, sequenced, assembled, analyzed, and annotated. The isolate has an AT-rich mt genome (14,317 bp in length) that comprises 12 protein-coding genes (PCGs), 22 transfer RNA genes, and two ribosomal RNA genes. The Notocotylus isolate identified in this study has relatively high mt genome sequence identity and identical gene content and arrangement to a known Notocotylidae species, Ogmocotyle sikae. The isolate formed a genetic clade with O. sikae in phylogenetic analysis of the concatenated PCG amino acid sequences. Compared to the ITS, the trematode mt genome appears more informative for resolving high-level phylogenies. To the best of our knowledge, this is the first study exploring the complete mt genome for the genus Notocotylus, and it offers a novel genomic resource that has important implications for trematode phylogenetics.
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Affiliation(s)
- Guoliang Xu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China.,Heilongjiang Key Laboratory for Zoonosis, College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Peng Zhu
- Heilongjiang Key Laboratory for Zoonosis, College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Weining Zhu
- Heilongjiang Key Laboratory for Zoonosis, College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Bo Ma
- Heilongjiang Key Laboratory for Zoonosis, College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Xiaoyun Li
- Heilongjiang Key Laboratory for Zoonosis, College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Wei Li
- Heilongjiang Key Laboratory for Zoonosis, College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, China.
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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] [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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Notocotylus chionis (Trematoda: Notocotylidae) and Notocotylus sp. from shorebirds in southern Patagonian wetlands of Argentina: morphological and molecular studies. Polar Biol 2020. [DOI: 10.1007/s00300-020-02753-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ogmogaster antarctica (Digenea: Notocotylidae) infecting a dwarf minke whale Balaenoptera acutorostrata (Cetartiodactyla: Balaenopteridae) from the southwestern Atlantic Ocean. Biologia (Bratisl) 2020. [DOI: 10.2478/s11756-020-00454-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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