Plagioporus wataugaensis n. sp. (Digenea: Opecoelidae) infecting intestine of northern hogsucker,Hypentelium nigricans,and white sucker,Catostomus commersonii, (Cypriniformes: Catostomidae) from the eastern USA,including an emended diagnosis,key to Nearctic congeners,and phylogenetic analysis |
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| Institution: | 1. Aquatic Parasitology Laboratory, Southeastern Cooperative Fish Parasite and Disease Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, AL 36832, USA;2. Biology Department and Biological Field Station, 120 Perna Science Building, State University of New York, College at Oneonta, Oneonta, New York 13820, USA;3. North Carolina Wildlife Resources Commission, 645 Fish Hatchery Road, Marion, NC 28752, USA;4. Department of Zoology, School for Environmental Sciences and Development, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa;1. Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil;2. Fundação Instituto Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Av. Brasil 44365, Rio de Janeiro, RJ, Brazil;3. Laboratório de Helmintologia Romero Lascasas Porto, Departamento de Microbiologia, Imunologia e Parasitologia, Universidade do Estado do Rio de Janeiro, Av. Professor Manoel de Abreu, 444, Vila Isabel, RJ 20550-170, Brazil;1. Division of Malaria Research, Proteo-Science Center, Ehime University, Matsuyama, Japan;2. ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain;3. Germans Trias i Pujol Health Research Institute (IGTP), Badalona (Barcelona), Spain;4. Population Health and Immunity Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia;1. Laboratorio de Parasitología General y Especializada, Facultad de Ciencias Naturales y Matemática, Universidad Nacional Federico Villarreal (UNFV), Código postal 15007, El Agustino, Lima, Peru;2. Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil, 4365, RJ CEP 21040-360, Brazil;3. Programa de Pós-Graduação em Ciências Veterinárias, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ CEP 23890-000, Brazil;4. Programa de Pós-Graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ CEP 23890-000, Brazil;5. Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Caixa Postal 74.540, Seropédica, RJ, Brazil, CEP 23851-970.;1. Department of Veterinary Medicine, Federal University of Paraná, Rua dos Funcionários 1540, CEP 80035-050, Curitiba, Paraná, Brazil;2. Santos Basin Beach Monitoring Project (PMP-BS), Seabird Rehabilitation Laboratory, University of Vale do Itajaí, Rua Maria Emília da Costa, CEP: 88-385-00090, Armação, Penha, Santa Catarina, Brazil;3. Autonomous veterinarian. R Eng Roberto. G. P. Leite, 711, Vista Alegre, CEP-80820-220, Curitiba, Paraná, Brazil;4. Nature Research Centre, Akademijos 2, 08412 Vilnius, Lithuania;1. Department of Pathology and Pathogen Biology, Royal Veterinary College, University of London, North Mymms, Hatfield AL9 7TA, United Kingdom;2. Gulf Coast Research Laboratory, The University of Southern Mississippi, East Beach Drive, Ocean Springs, MS 39564, USA;3. Fish Health Laboratory, Department of Fisheries, 3 Baron-Hay Court, South Perth, Western Australia 6151, Australia;4. School of Biological Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia;5. Department of Veterinary Medicine, University of Cambridge, Cambridge CB3 0ES, United Kingdom |
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| Abstract: | We describe a new species of Plagioporus Stafford, 1904 infecting the intestine of two catostomids in the eastern USA. We emend Plagioporus to account for Nearctic congeners having ceca terminating at the level of the testes (previously diagnosed as having ceca terminating in the post-testicular space only) and testes in the posterior body extremity (a feature not previously considered as having generic importance). Of the accepted Nearctic species, Plagioporus wataugaensis n. sp. resembles Plagioporus serotinus Stafford, 1904, Plagioporus hypentelii Hendrix, 1973, and Plagioporus hageli Fayton and Andres, 2016 but differs from them by the distribution of the vitellarium and proportional length and relative extent of the excretory vesicle. Plagioporus wataugaensis has vitelline fields that are discontinuous at the level of the ventral sucker (vs. continuous in P. serotinus and P. hypentelii) and follicles that surround the ceca (vs. wholly ventral to the ceca in P. hageli) and that span the midline dorsal to the testes (vs. slightly overlapping the lateral margins of the testes). The excretory vesicle of P. wataugaensis is wholly post-testicular and short (6–9% of the body length) (vs. reaching the level of the posterior testis, 14–24% of the body length). Phylogenetic analyses of the 28S, ITS1, 5.8S, and ITS2 rDNA recovered P. wataugaensis sister to Plagioporus sinitsini Mueller, 1934. A key to the Nearctic Plagioporus spp. is provided. We regard Plagioporus shawi (McIntosh, 1939) Margolis, 1970, Plagioporus serratus Miller, 1940, and Plagioporus loboides (Curran, Overstreet, and Tkach, 2007) Fayton and Andres, 2016 as incertae sedis. |
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