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 |
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| Affiliation: | 1. Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan,;2. Laboratory of Veterinary Parasitology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8511, Japan.;1. A.N. Severtsov Institute of Ecology and Evolution of the RAS, Moscow, Russia;2. Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the RAS, Vladivostok, Russia;3. Department of Cell Biology and Genetics, Far Eastern Federal University, Vladivostok, Russia;4. Department of Ecosystem Studies, School of Environmental Science, University of Shiga Prefecture, Hikone, Japan;1. Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1-1, Gakuen-Kibanadai Nishi, Miyazaki 889-2192, Japan;2. Department of Parasitology, Faculty of Veterinary medicine, Vietnam National University of Agriculture, Trau Quy, Gia Lam, Ha Noi, Viet Nam;3. Centre for Animal Disease Control (CADIC), University of Miyazaki, 1-1, Gakuen-Kibanadai Nishi, Miyazaki 889-2192, Japan;4. Division of Parasitology, Department of Infectious Diseases, Faculty of Medicine, University of Miyazaki 5200 Kihara, Kiyotake-cho, Miyazaki 889-1692, Japan.;1. A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskij pr. 33, Moscow 119071, Russia;2. Institute of Biology and Soil Science, Far Eastern Branch of the Russian Academy of Sciences, pr-t 100-letiya Vladivostoka 159, Vladivostok 690022, Russia;3. Department of Cell Biology and Genetics, Far Eastern Federal University, Sukhanova st. 8, Vladivostok 690051, Russia,;4. Russian Federal Research Institute of Fisheries and Oceanography, V. Krasnoselskaya st. 17, Moscow 107140, Russia |
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| 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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