Husch Christian, Sattmann Helmut, Hörweg Christoph, Ursprung Josef, Walochnik Julia
Institute for Specific Prophylaxis and Tropical Medicine, Medical University Vienna, 1090, Vienna, Austria.
Natural History Museum Vienna, 1010 Vienna, Austria.
Vet Parasitol. 2017 Aug 30;243:75-78. doi: 10.1016/j.vetpar.2017.06.007. Epub 2017 Jun 20.
The large American liver fluke, Fascioloides magna, is an economically relevant parasite of both domestic and wild ungulates. F. magna was repeatedly introduced into Europe, for the first time already in the 19th century. In Austria, a stable population of F. magna has established in the Danube floodplain forests southeast of Vienna. The aim of this study was to determine the genetic diversity of F. magna in Austria. A total of 26 individuals from various regions within the known area of distribution were investigated for their cytochrome oxidase subunit 1 (cox1) and nicotinamide dehydrogenase subunit 1 (nad1) gene haplotypes. Interestingly, all 26 individuals revealed one and the same haplotype, namely concatenated haplotype Ha5. This indicates a homogenous population of F. magna in Austria and may argue for a single introduction. Alternatively, genetic homogeneity might also be explained by a bottleneck effect and/or genetic drift.
大型美洲肝吸虫（Fascioloides magna）是一种对家养和野生有蹄类动物具有经济影响的寄生虫。F. magna多次被引入欧洲，最早可追溯到19世纪。在奥地利，维也纳东南部的多瑙河漫滩森林中已形成了稳定的F. magna种群。本研究的目的是确定奥地利F. magna的遗传多样性。对已知分布区域内不同地区的26个个体进行了细胞色素氧化酶亚基1（cox1）和烟酰胺脱氢酶亚基1（nad1）基因单倍型调查。有趣的是，所有26个个体都显示出相同的单倍型，即串联单倍型Ha5。这表明奥地利的F. magna种群具有同质性，可能支持单次引入的观点。或者，遗传同质性也可能由瓶颈效应和/或遗传漂变来解释。
