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Population- and growth-related differences in helminthic fauna of finless porpoises (Neophocaena asiaeorientalis) in five Japanese populations

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タイトル: Population- and growth-related differences in helminthic fauna of finless porpoises (Neophocaena asiaeorientalis) in five Japanese populations
著者: Shiozaki, Akira / Amano, Masao
発行日: 2017年 3月18日
出版者: 日本獣医学会 / Japanese Society of Veterinary Science
引用: Journal of Veterinary Medical Science, 79(3), pp.534-541; 2017
抄録: A survey of helminths and ectoparasites, including epizoits, was conducted in narrow-ridged finless porpoises (Neophocaena asiaeorientalis) from Japanese five populations using dead stranded or incidentally caught animals. In total, 13 helminth species were found (6 nematodes, 4 trematodes, 2 cestodes and 1 acanthocephalan) in 137 porpoises. A new location record of Stenurus nanjingensis and a new host record of Tetrabothrius sp. were obtained. Eight species of helminth were considered common in the Japanese populations of the finless porpoise: Pharurus sunameri, Pharurus asiaeorientalis, Nasitrema spathulatum, Nasitrema sunameri, Halocercus pingi, Halocercus sunameri, Campula oblonga and Synthesium elongatum. No anisakid nematodes were found. N. spathulatum was found only in the western waters of the Seto Inland Sea. Low prevalence of C. oblonga in the Omura Bay was demonstrated. H. pingi was mostly found in very young porpoises before starting to eat prey, indicating prenatal or transmammary infection. However, a congeneric species, H. sunameri, mainly infected weaned porpoises, indicating that these two species possess different transmission pathways. This study provides information on the geographical distribution and prevalence of helminth parasites in finless porpoises off the Japanese coast.
キーワード: Finless porpoise / Helminthic fauna / Population / Prevalence
URI: http://hdl.handle.net/10069/37542
ISSN: 09167250
DOI: 10.1292/jvms.16-0421
権利: ©2017 The Japanese Society of Veterinary Science.
資料タイプ: Journal Article
原稿種類: publisher
出現コレクション:080 学術雑誌論文

引用URI : http://hdl.handle.net/10069/37542



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