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Li R, Wang HM, Liu GH, Tu Y, Deng YP. Characterization of the complete mitochondrial genome of the fluke of turdus, Plagiorchis elegans, and phylogenetic implications. Exp Parasitol 2022; 242:108387. [PMID: 36170911 DOI: 10.1016/j.exppara.2022.108387] [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: 04/23/2022] [Revised: 09/03/2022] [Accepted: 09/21/2022] [Indexed: 11/28/2022]
Abstract
Plagiorchis elegans (Trematoda: Digenea) is mainly parasitic in the intestines of vertebrate animals, including humans, causing irreversible pathological damage and herd-spherical influences. However, little information is available about its molecular epidemiology, population genetics, and phylogeny. In the present study, we sequenced, assembled, and annotated the complete mitochondrial (mt) genome of P. elegans. Combining with the available mitochondrial data of subclass Digenea, phylogenetic analysis was performed based on Bayesian inference (BI). The results showed that the complete length of P. elegans is 13,862 bp, including 12 PCGs, 2 ribosomal RNAs (rRNAs), 22 transfer RNAs (tRNAs), and one non-coding gene (NCR). There was an obvious A + T content from 61.0% to 71.3% and the values of the Ka/Ks ratio ranged from 0.119 (cox1) to 1.053 (nad6). In the BI analysis, different from previous studies, phylogenetic analysis showed genus Glypthelmins was paraphyletic rather than monophyletic and had a closer relationship with Plagiorchis and Orientocreadium. Additionally, the BI tree also presented that the genus Echinostoma was monophyletic. Our results provided molecular data in the family Plagiorchiidae proposing new insight within Xiphidiata and Echinostomata.
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Affiliation(s)
- Rong Li
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan province, 410128, China
| | - Hui-Mei Wang
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan province, 410128, China
| | - Guo-Hua Liu
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan province, 410128, China
| | - Ya Tu
- Beijing Wildlife Rescue and Rehabilitation Center, Beijing, 101300, China.
| | - Yuan-Ping Deng
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan province, 410128, China.
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Phylogenetics of Historical Host Switches in a Bacterial Plant Pathogen. Appl Environ Microbiol 2022; 88:e0235621. [PMID: 35311514 DOI: 10.1128/aem.02356-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Xylella fastidiosa is an insect-transmitted bacterial plant pathogen found across the Americas and, more recently, worldwide. X. fastidiosa infects plants of at least 563 species belonging to 82 botanical families. While the species X. fastidiosa infects many plants, particular strains have increased plant specificity. Understanding the molecular underpinnings of plant host specificity in X. fastidiosa is vital for predicting host shifts and epidemics. While there may exist multiple genetic determinants of host range in X. fastidiosa, the drivers of the unique relationships between X. fastidiosa and its hosts should be elucidated. Our objective with this study was to predict the ancestral plant hosts of this pathogen using phylogenetic and genomic methods based on a large data set of pathogen whole-genome data from agricultural hosts. We used genomic data to construct maximum-likelihood (ML) phylogenetic trees of subsets of the core and pan-genomes. With those trees, we ran ML ancestral state reconstructions of plant host at two taxonomic scales (genus and multiorder clades). Both the core and pan-genomes were informative in terms of predicting ancestral host state, giving new insight into the history of the plant hosts of X. fastidiosa. Subsequently, gene gain and loss in the pan-genome were found to be significantly correlated with plant host through genes that had statistically significant associations with particular hosts. IMPORTANCE Xylella fastidiosa is a globally important bacterial plant pathogen with many hosts; however, the underpinnings of host specificity are not known. This paper contains important findings about the usage of phylogenetics to understand the history of host specificity in this bacterial species, as well as convergent evolution in the pan-genome. There are strong signals of historical host range that give us insights into the history of this pathogen and its various invasions. The data from this paper are relevant in making decisions for quarantine and eradication, as they show the historical trends of host switching, which can help us predict likely future host shifts. We also demonstrate that using multilocus sequence type (MLST) genes in this system, which is still a commonly used process for policymaking, does not reconstruct the same phylogenetic topology as whole-genome data.
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Curran SS, Dutton HR, Warren MB, du Preez L, Bullard SA. Two new species of Cephalogonimidae Looss, 1899 (Digenea: Plagiorchioidea) from Africa (Mozambique and Guinea), including a new phylogenetic hypothesis for related plagiorchioids. Int J Parasitol Parasites Wildl 2021; 14:228-240. [PMID: 33898223 PMCID: PMC8056140 DOI: 10.1016/j.ijppaw.2021.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/11/2021] [Accepted: 02/11/2021] [Indexed: 11/26/2022]
Abstract
Two new species of Cephalogonimidae Looss, 1899 (from Emoleptalea Looss, 1900 and Masenia Chatterji, 1933) are described from African freshwater fishes. Emoleptalea mozambiquensis n. sp. infected the turquoise killifish, Nothobranchius furzeri Jubb, in Mozambique and differs from its nine congeners by the combination of differences in body shape and size, oral sucker shape, sucker width ratio, configuration of the digestive tract and gonads, vitelline follicle shape and vitellarium configuration. Emoleptalea dollfusi Srivastava, 1960 is a synonym of Emoleptalea loossi Srivastava, 1960, thus there are still nine accepted species. Masenia baroensis n. sp. infected the globe fish, Tetraodon lineatus L., in the Republic of Guinea and differs from its five African congeners and 15 Asian congeners by the combination of circumoral spine count, oral sucker shape, caecal extent, ovary shape, genital pore position, and configuration of the vitellarium. Masenia dayali (Gupta & Puri, 1984) Chandra & Saxena, 2016 and Masenia pushpanjalii are nomina dubia. We propose Masenia ritai (Agrawal, 1964) n. comb., with M. ritai Sircar & Sinha, 1970 its junior synonym. Heterorchis cf. crumenifer (identified tentatively due to egg size) is reported from the West African lungfish, Protopterus annectens (Owen), in Mozambique (new geographical record). Heterorchis protopteri Thomas, 1958 and Heterorchis ghanensis Thomas, 1968 are species inquirendae. Sequences (28S rDNA) from these parasites were included in a Bayesian phylogenetic analysis with 37 other ingroup taxa. Both new species formed a clade with Masenia nkomatiensis Dumbo, Dos Santos & Avenant-Oldewage, 2019 from Africa. These three species formed a sister relationship with the other available cephalogonimids: Cephalogonimus americanus Stafford, 1902 and Cephalogonimus retusus (Dujardin, 1845), both frog parasites from North America and Europe, respectively. Heterorchis cf. crumenifer represented a distinct lineage within the Plagiorchioidea but formed a polytomy with species from 10 plagiorchioid families.
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Affiliation(s)
- Stephen S. Curran
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Project, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
| | - Haley R. Dutton
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Project, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
| | - Micah B. Warren
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Project, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
| | - Louis du Preez
- Unit for Environmental Sciences and Management, North-West, University, Potchefstroom Campus, Private Bag X6001, Potchefstroom, 20520, South Africa
- South African Institute for Aquatic Biodiversity, Private Bag 1015, Makhanda, 6140, South Africa
| | - Stephen A. Bullard
- Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Project, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
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First molecular assessment of two digenean parasites of the lancehead snake Bothrops moojeni Hoge, 1966 (Serpentes, Viperidae) in Brazil. Parasitol Res 2021; 120:971-977. [PMID: 33409642 DOI: 10.1007/s00436-020-07041-3] [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: 08/30/2020] [Accepted: 12/25/2020] [Indexed: 10/22/2022]
Abstract
Two digenean species, Infidum infidum Faria, 1910 (Dicrocoeliidae) and Travtrema stenocotyle Cohn, 1902 (Plagiorchiidae), were collected in the large pit viper Bothrops moojeni Hoge, 1966 from Reserva Particular do Patrimônio Natural Cisalpina, municipality of Brasilândia, Mato Grosso do Sul State, Brazil. In this study, we provide the first molecular characterisation using the 28S rDNA and phylogenetic position data of these two common digeneans from B. moojeni. The molecular framework revealed topologies with strongly supported clades using maximum likelihood and Bayesian inference methods, positioned I. infidum among Plagiorchiidae and not among Dicrocoeliidae as expected and T. stenocotyle (Plagiorchiidae) surprisingly grouped as a sister group to Allassogonoporidae, Microphallidae, Pleurogenidae, and Prosthogonimidae, not related to plagiorchids. Our molecular phylogenetic data showed that these species may not correspond to their assigned families and encourage future studies on the systematic of these understudied groups.
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Abdel-Gaber R, Quraishy SA, Dkhil MAM, Hawsah MA, Alghamdi M, Althomali A, Bakr L, Maher S, El-Mallah A. Phyllodistomum vaili(Plagiorchiida: Gorgoderidae) infecting Parupeneus rubescens (Perciformes: Mullidae): morphology and phylogeny. ACTA ACUST UNITED AC 2020; 29:e020019. [PMID: 32236335 DOI: 10.1590/s1984-29612020005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 01/17/2020] [Indexed: 11/22/2022]
Abstract
Knowledge of the Arabian Gulf fish's parasite fauna is very poor. Until recently, only scattered reports from different locations are known for ecto- and endoparasites. Therefore, the present study aimed to investigate the digenean species that infects one of the most economically fish species in the Arabian Gulf, the rosy goatfish Parupeneus rubescens . One plagiorchiid species has been described, belonging to the Gorgoderidae family, and has been named as Phyllodistomum vaili Ho, Bray, Cutmore, Ward & Cribb, 2014 based on its morphological and morphometric characteristics. In order to accurately classify and characterize this plagiorchiid species, molecular analysis was carried out using both nuclear 18S and 28S rRNA gene regions and revealed that the present plagiorchiid species was associated with other species belonging to the Gorgoderidae family and deeply embedded in the Phyllodistomum genus, closely related to the previously described P. vaili (gb| KF013187.1, KF013173.1). The present study therefore revealed that the species Phyllodistomum is the first account as endoparasites from the rosy goatfish inhabiting the Arabian Gulf.
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Affiliation(s)
- Rewaida Abdel-Gaber
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia.,Zoology Department, Faculty of Science, Cairo University, Cairo, Egypt
| | - Saleh Al Quraishy
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed Abdel Monem Dkhil
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia.,Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
| | - Maysar Abu Hawsah
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Masheil Alghamdi
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Arwa Althomali
- Molecular Biological Unit, Prince Naif Health Research Center, King Saud University, Riyadh, Saudi Arabia
| | - Lamia Bakr
- Zoology Department, Faculty of Science, Tanta University, Tanta, Egypt
| | - Sherein Maher
- Zoology Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Heliopolis, Egypt
| | - Almahy El-Mallah
- Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
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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. [PMID: 31580787 DOI: 10.1645/18-169] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] 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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7
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Dumbo JC, Dos Santos QM, Avenant-Oldewage A. Morphological and molecular characterization of Glossidium pedatum Looss, 1899 and Orientocreadium batrachoides Tubangui, 1931 from sharptooth catfish, Clarias gariepinus (Burchell, 1822). AFRICAN ZOOLOGY 2019. [DOI: 10.1080/15627020.2019.1595143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- José Chissiua Dumbo
- Department of Zoology, University of Johannesburg, Johannesburg, South Africa
- Department of Biological Science, Science Faculty, Eduardo Mondlane University, Maputo, Mozambique
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Dumbo JC, Dos Santos QM, Avenant-Oldewage A. Masenia nkomatiensis n. sp. (Digenea: Cephalogonimidae) from Clarias gariepinus (Burchell) (Clariidae) in Incomati Basin, Mozambique. Syst Parasitol 2019; 96:311-326. [PMID: 30903447 DOI: 10.1007/s11230-019-09848-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 02/02/2019] [Indexed: 11/27/2022]
Abstract
A new species of Masenia Chatterji, 1933 is described based on material from the intestine of Clarias gariepinus (Burchell) in the Incomati River, Mozambique. The combination of morphological characteristics and analysis of 18S and 28S rDNA sequences delineated the specimens found in the present study as a distinct species. The new form is distinguished from other Masenia spp. in having a large reniform seminal receptacle, a cirrus-sac ending anterior to the ventral sucker, intestinal caeca extending into the hindbody to the level of the posterior testis, and the vitelline fields extending anteriorly to the ventral sucker and posteriorly to the middle of the ovary. Notably, the new form is the only record of African species having a sac-shaped excretory vesicle. Analysis of 28S rDNA sequence data supported its placement in the Cephalogonimidae Looss, 1899. 18S analyses also supported its placement in this family but showed it was not closely related to Masenia bangweulensis (Beverley-Burton, 1962), the sole other African species for which genetic data is currently accessible. The total pairwise differences for 18S and 28S sequences showed the new form differing from other cephalogonimids. Thus, both morphological and genetic characteristics indicate that the present form represents a distinct species, here described as Masenia nkomatiensis n. sp. An updated key to African Masenia spp., now five, is provided.
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Affiliation(s)
- José Chissiua Dumbo
- Department of Zoology, University of Johannesburg, Johannesburg, Gauteng, South Africa
- Department of Biological Science, Eduardo Mondlane University, Maputo, Mozambique
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9
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Müller MI, Morais DH, Silva RJD. Molecular phylogenetic position of Haplometroides intercaecalis (Digenea, Plagiorchiidae). Acta Parasitol 2018; 63:522-526. [PMID: 29975646 DOI: 10.1515/ap-2018-0062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 04/12/2018] [Indexed: 11/15/2022]
Abstract
Three valid species of Haplometroides Odhner, 1910 parasitise snakes and amphisbaenians from South America. This study provides additional data on morphometric and molecular phylogenetic position inferred from the nuclear ribosomal gene 28S (partial). DNA sequences were isolated from Haplometroides intercaecalis Silva, Ferreira and Strüssmann, 2007 found in one specimen of Phalotris matogrossensis Lema, D'Agostini and Cappellari, 2005. Five digenean specimens were recovered from the esophagus of this snake, and four specimens were used for morphometrical studies and one specimen for molecular analysis. Phylogenetic analysis using maximum likelihood and Bayesian methods was conducted with sequences available for the order Plagiorchiida and its phylogenetic position places H. intercaecalis among the brachycoeliids Brachycoelium (Dujardin, 1845) Stiles and Hassall, 1898 and Parabrachycoelium Pérez-Ponce de León, Mendoza-Garfias, Razo-Mendivil and Parra-Olea, 2011, and the mesocoeliid Mesocoelium Odhner, 1910, not closely related to plagiorchids as expected. Due to morphological differences among these families, it may be necessary to create a new family to accommodate Haplometroides spp. However, more genera/taxa as well as other molecular markers should be added in future studies to confirm our results and resolve this matter. This is the first phylogenetic positioning of digeneans of the genus Haplometroides, contributing to the systematic analysis of the helminthological biodiversity of Neotropical snakes.
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Affiliation(s)
- Maria Isabel Müller
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Instituto de Biociências, Departamento de Parasitologia, Distrito de Rubião Júnior s/n, CEP 18618-689, Botucatu, São Paulo, Brazil
| | - Drausio Honorio Morais
- Universidade Federal Rural da Amazônia (UFRA), PA 275, Km 13, Zona Rural. CEP: 68.515-000, Parauapebas, Pará, Brazil
| | - Reinaldo José da Silva
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Instituto de Biociências, Departamento de Parasitologia, Distrito de Rubião Júnior s/n, CEP 18618-689, Botucatu, São Paulo, Brazil
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Navaud O, Barbacci A, Taylor A, Clarkson JP, Raffaele S. Shifts in diversification rates and host jump frequencies shaped the diversity of host range among Sclerotiniaceae fungal plant pathogens. Mol Ecol 2018; 27:1309-1323. [PMID: 29421852 PMCID: PMC5900718 DOI: 10.1111/mec.14523] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 01/26/2018] [Accepted: 01/29/2018] [Indexed: 01/07/2023]
Abstract
The range of hosts that a parasite can infect in nature is a trait determined by its own evolutionary history and that of its potential hosts. However, knowledge on host range diversity and evolution at the family level is often lacking. Here, we investigate host range variation and diversification trends within the Sclerotiniaceae, a family of Ascomycete fungi. Using a phylogenetic framework, we associate diversification rates, the frequency of host jump events and host range variation during the evolution of this family. Variations in diversification rate during the evolution of the Sclerotiniaceae define three major macro-evolutionary regimes with contrasted proportions of species infecting a broad range of hosts. Host-parasite cophylogenetic analyses pointed towards parasite radiation on distant hosts long after host speciation (host jump or duplication events) as the dominant mode of association with plants in the Sclerotiniaceae. The intermediate macro-evolutionary regime showed a low diversification rate, high frequency of duplication events and the highest proportion of broad host range species. Our findings suggest that the emergence of broad host range fungal pathogens results largely from host jumps, as previously reported for oomycete parasites, probably combined with low speciation rates. These results have important implications for our understanding of fungal parasites evolution and are of particular relevance for the durable management of disease epidemics.
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Affiliation(s)
- Olivier Navaud
- LIPM, Université de Toulouse, INRA, CNRSCastanet‐TolosanFrance
| | - Adelin Barbacci
- LIPM, Université de Toulouse, INRA, CNRSCastanet‐TolosanFrance
| | - Andrew Taylor
- Warwick Crop CentreSchool of Life SciencesUniversity of WarwickCoventryUK
| | - John P. Clarkson
- Warwick Crop CentreSchool of Life SciencesUniversity of WarwickCoventryUK
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Gomes TFF, Melo FTDV, Giese EG, Furtado AP, Santos JND. Choledocystus elegans (Digenea: Plagiorchiidae) of Leptodactylus paraensis (Amphibia: Leptodactylidae) from the Brazilian Amazon. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2017; 26:511-515. [PMID: 29091121 DOI: 10.1590/s1984-29612017049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 08/03/2017] [Indexed: 11/22/2022]
Abstract
The trematodes are parasites of the several vertebrates including amphibians, however the knowledge about of the taxonomy these parasites is still confuse. The trematode Choledocystus elegans was found in the small intestine of the Leptodactylus paraensis in eastern Amazon and presents the following characteristics: several pointed tegumentary spines, papillae on the outer and inner edges of the oral and ventral suckers, a round, well-developed cirrus sac, a well-developed cirrus, oblique testicles, a ovary right side, uterine loops extending between the testicles, follicular vitellaria distributed throughout the body, starting at the genital pore region and caeca close the end of the body. For the first time, this study identified C. elegans parasitizing L. paraensis and describes morphological aspects never characterized using light and scanning electron microscopy.
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Affiliation(s)
- Tássia Fernanda Furo Gomes
- Laboratório de Biologia Celular e Helmintologia "Profa. Dra. Reinalda Marisa Lanfredi, Instituto de Ciências Biológicas, Universidade Federal do Pará - UFPA, Belém, PA, Brasil
| | - Francisco Tiago de Vasconcelos Melo
- Laboratório de Biologia Celular e Helmintologia "Profa. Dra. Reinalda Marisa Lanfredi, Instituto de Ciências Biológicas, Universidade Federal do Pará - UFPA, Belém, PA, Brasil
| | - Elane Guerreiro Giese
- Laboratório de Histologia e Embriologia Animal, Instituto de Saúde e Produção Animal, Universidade Federal Rural da Amazônia - UFRA, Belém, PA, Brasil
| | - Adriano Penha Furtado
- Laboratório de Biologia Celular e Helmintologia "Profa. Dra. Reinalda Marisa Lanfredi, Instituto de Ciências Biológicas, Universidade Federal do Pará - UFPA, Belém, PA, Brasil
| | - Jeannie Nascimento Dos Santos
- Laboratório de Biologia Celular e Helmintologia "Profa. Dra. Reinalda Marisa Lanfredi, Instituto de Ciências Biológicas, Universidade Federal do Pará - UFPA, Belém, PA, Brasil
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12
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Phylogenetic position of the family Orientocreadiidae within the superfamily Plagiorchioidea (Trematoda) based on partial 28S rDNA sequence. Parasitol Res 2017; 116:2831-2844. [PMID: 28831562 DOI: 10.1007/s00436-017-5594-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/15/2017] [Indexed: 10/19/2022]
Abstract
Trematodes of the family Orientocreadiidae are mostly parasites of freshwater fishes. Here, the phylogenetic position of this family is inferred based on the partial 28S rDNA sequence from a representative of the genus Orientocreadium s. str.-О. pseudobagri Yamaguti, 1934. Sequences were analysed by maximum likelihood and Bayesian inference algorithms. Both approaches placed the Orientocreadiidae within a clade corresponding to the superfamily Plagiorchioidea and supported the family Leptophallidae as a sister taxon.
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13
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Molecular analyses reveal high species diversity of trematodes in a sub-Arctic lake. Int J Parasitol 2017; 47:327-345. [DOI: 10.1016/j.ijpara.2016.12.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 12/09/2016] [Accepted: 12/12/2016] [Indexed: 02/05/2023]
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14
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Razo-Mendivil U, Rosas-Valdez R, Rubio-Godoy M, Pérez-Ponce de León G. The use of mitochondrial and nuclear sequences in prospecting for cryptic species in Tabascotrema verai (Digenea: Cryptogonimidae), a parasite of Petenia splendida (Cichlidae) in Middle America. Parasitol Int 2015; 64:173-81. [DOI: 10.1016/j.parint.2014.12.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 11/27/2014] [Accepted: 12/03/2014] [Indexed: 10/24/2022]
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Yu Y, Harris AJ, Blair C, He X. RASP (Reconstruct Ancestral State in Phylogenies): a tool for historical biogeography. Mol Phylogenet Evol 2015; 87:46-9. [PMID: 25819445 DOI: 10.1016/j.ympev.2015.03.008] [Citation(s) in RCA: 650] [Impact Index Per Article: 72.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 03/09/2015] [Accepted: 03/12/2015] [Indexed: 01/03/2023]
Abstract
We announce the release of Reconstruct Ancestral State in Phylogenies (RASP), a user-friendly software package for inferring historical biogeography through reconstructing ancestral geographic distributions on phylogenetic trees. RASP utilizes the widely used Statistical-Dispersal Vicariance Analysis (S-DIVA), the Dispersal-Extinction-Cladogenesis (DEC) model (Lagrange), a Statistical DEC model (S-DEC) and BayArea. It provides a graphical user interface (GUI) to specify a phylogenetic tree or set of trees and geographic distribution constraints, draws pie charts on the nodes of a phylogenetic tree to indicate levels of uncertainty, and generates high-quality exportable graphical results. RASP can run on both Windows and Mac OS X platforms. All documentation and source code for RASP is freely available at http://mnh.scu.edu.cn/soft/blog/RASP.
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Affiliation(s)
- Yan Yu
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, PR China; Department of Biology, Duke University, Box 90338, BioSci 130 Science Drive, Durham, NC 27708, USA
| | - Alan J Harris
- Department of Botany, Oklahoma State University, 301 Physical Science, Stillwater, OK 74078-3013, USA.
| | - Christopher Blair
- Department of Biology, Duke University, Box 90338, BioSci 130 Science Drive, Durham, NC 27708, USA; Department of Biological Sciences, New York City College of Technology, The City University of New York, 300 Jay Street, Brooklyn, NY 11201, USA
| | - Xingjin He
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, PR China.
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Razo-Mendivil U, Pérez-Ponce de León G, Rubio-Godoy M. Integrative taxonomy identifies a new species of Phyllodistomum (Digenea: Gorgoderidae) from the twospot livebearer, Heterandria bimaculata (Teleostei: Poeciliidae), in Central Veracruz, Mexico. Parasitol Res 2014; 112:4137-50. [PMID: 24022129 DOI: 10.1007/s00436-013-3605-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 08/25/2013] [Indexed: 11/29/2022]
Abstract
Phyllodistomum inecoli n. sp. is described from the twospot livebearer, Heterandria bimaculata (Teleostei: Poeciliidae), collected in the Río La Antigua basin, Veracruz, Mexico. The new species is described and characterised by using a combination of morphology, scanning electron microscopy, and sequences of nuclear and mitochondrial genes. Diagnostic characters of the new species of Phyllodistomum include a genital pore opening at the level of the caecal bifurcation; oval vitellarium, situated just posterior to the ventral sucker and not extended laterally and anterior extracaecal uterine loops variable in extension (reaching the anterior, median or posterior margin of the ventral sucker). P. inecoli n. sp. most closely resembles P. brevicecum, a species described as a parasite of the central mudminnow, Umbra limi, in other parts of North America; however, the genital pore in P. brevicecum is situated between the caecal bifurcation and the ventral sucker, the ovary is larger, the vitellarium is lobed and extended laterally and the anterior portion of the uterus extends to the posterior margin of the ventral sucker. Comparison of about 1,500–2,200 nucleotides of cox1 and 28S rDNA and ITS1 strongly supports the status of P. inecoli as a new species. Bayesian inference analysis of combined datasets of 28S rDNA and cox1 sequences showed that P. inecoli n. sp. and the other species found in freshwater fishes of Mexico, including the species complex of P. lacustri, are not sister species. Phylogenetic analysis based on 28S rDNA sequences of several gorgoderid taxa revealed the close relationship of P. inecoli n. sp. with several species of Phyllodistomum, Gorgodera and Gorgoderina with cystocercous cercariae developing in sphaeriid bivalves. Dot-plot analysis of ITS1 sequences of P. inecoli n. sp. revealed the presence of eight repetitive elements with different length, which together represent almost half the length of ITS1.
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Razo-Mendivil U, Vázquez-Domínguez E, de León GPP. Discordant genetic diversity and geographic patterns between Crassicutis cichlasomae (Digenea: Apocreadiidae) and its cichlid host, "Cichlasoma" urophthalmus (Osteichthyes: Cichlidae), in Middle-America. J Parasitol 2013; 99:978-88. [PMID: 23859473 DOI: 10.1645/13-225.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Genetic analyses of hosts and their parasites are key to understand the evolutionary patterns and processes that have shaped host-parasite associations. We evaluated the genetic structure of the digenean Crassicutis cichlasomae and its most common host, the Mayan cichlid "Cichlasoma" urophthalmus, encompassing most of their geographical range in Middle-America (river basins in southeastern Mexico, Belize, and Guatemala together with the Yucatan Peninsula). Genetic diversity and structure analyses were done based on 167 cytochrome c oxidase subunit 1 sequences (330 bp) for C. cichlasomae from 21 populations and 161 cytochrome b sequences (599 bp) for "C." urophthalmus from 26 populations. Analyses performed included phylogenetic tree estimation under Bayesian inference and maximum likelihood analysis, genetic diversity, distance and structure estimates, haplotype networks, and demographic evaluations. Crassicutis cichlasomae showed high genetic diversity values and genetic structuring, corresponding with 4 groups clearly differentiated and highly divergent. Conversely, "C." urophthalmus showed low levels of genetic diversity and genetic differentiation, defined as 2 groups with low divergence and with no correspondence with geographical distribution. Our results show that species of cichlids parasitized by C. cichlasomae other than "C." urophthalmus, along with multiple colonization events and subsequent isolation in different basins, are likely factors that shaped the genetic structure of the parasite. Meanwhile, historical long-distance dispersal and drought periods during the Holocene, with significant population size reductions and fragmentations, are factors that could have shaped the genetic structure of the Mayan cichlid.
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Affiliation(s)
- Ulises Razo-Mendivil
- Departamento de Ecología de la Biodiversidad. Instituto de Ecología, Universidad Nacional Autónoma de México, Ap. Postal 70-275, Ciudad Universitaria, México DF, 04510, México. Correspondence should be sent to:
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Jorge F, Perera A, Carretero MA, James Harris D, Roca V. Cryptic species unveiled: the case of the nematode Spauligodon atlanticus. J ZOOL SYST EVOL RES 2013. [DOI: 10.1111/jzs.12019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fátima Jorge
- CIBIO-UP; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
- Departamento de Biologia; Faculdade de Ciências da; Universidade do Porto; Porto Portugal
| | - Ana Perera
- CIBIO-UP; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
| | - Miguel A. Carretero
- CIBIO-UP; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
| | - D. James Harris
- CIBIO-UP; Centro de Investigação em Biodiversidade e Recursos Genéticos; Universidade do Porto; Vairão Portugal
| | - Vicente Roca
- Departament de Zoologia; Facultat de Ciències Biològiques; Universitat de València; València Spain
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