Kuzmina T A, Tkach V V, Spraker T R, Lyons E T, Kudlai O
I. I. Schmalhausen Institute of Zoology NAS of Ukraine, B. Khmelnitsky Street, 15, Kyiv, 01030, Ukraine.
Department of Biology, University of North Dakota, 10 Cornell Street, Grand Forks, ND, 58202-9019, USA.
Parasitol Res. 2018 Apr;117(4):1079-1086. doi: 10.1007/s00436-018-5784-z. Epub 2018 Feb 12.
A parasitological survey of 651 northern fur seals Callorhinus ursinus L. from five subpopulations was conducted on St. Paul Island, Alaska, during July-August 2012-2014. Digenean trematodes were found in 210 of 651 fur seals with a total prevalence of 32.3%. Intensity of infection varied from 1 to 1540 parasites with mean intensity 18.4 ± 111.1 SD and median intensity of 2 specimens per host. Significant differences in prevalence and intensity of infection in northern fur seals between separate rookeries was not observed (Mann-Whitney test; p > 0.05). Four species of digeneans belonging to the families Heterophyidae (Apophallus zalophi Price, 1932, Phocitrema fusiforme Goto and Ozaki, 1930, and Galactosomum ubelakeri (Dailey, 1969)) and Troglotrematidae (Nanophyetus salmincola (Chapin, 1926)) were found. Nanophyetus salmincola is reported from C. ursinus for the first time. We obtained partial 28S rDNA sequences for all digenean species and conducted molecular phylogenetic analysis to demonstrate their phylogenetic relationships.
2012年7月至2014年8月期间，在阿拉斯加圣保罗岛对来自五个亚种群的651只北海狗（Callorhinus ursinus L.）进行了寄生虫学调查。在651只海狗中，有210只发现了复殖吸虫，总感染率为32.3%。感染强度从1只寄生虫到1540只寄生虫不等，平均强度为18.4±111.1标准差，每只宿主的中位数强度为2只。在不同繁殖地的北海狗中，未观察到感染率和感染强度的显著差异（曼-惠特尼检验；p>0.05）。发现了四种属于异形科（Apophallus zalophi Price，1932年；Phocitrema fusiforme Goto和Ozaki，1930年；Galactosomum ubelakeri（Dailey，1969年））和后睾科（Nanophyetus salmincola（Chapin，1926年））的复殖吸虫。首次在北海狗中报道了鲑隐孔吸虫。我们获得了所有复殖吸虫物种的部分28S rDNA序列，并进行了分子系统发育分析，以证明它们的系统发育关系。
