Shumenko P G, Tatonova Y V, Besprozvannykh V V
Institute of Biology and Soil Science, Far Eastern Branch, Russian Academy of Sciences, 100-letiya Street, 159, Vladivostok 690022, Russia.
Institute of Biology and Soil Science, Far Eastern Branch, Russian Academy of Sciences, 100-letiya Street, 159, Vladivostok 690022, Russia.
Parasitol Int. 2017 Feb;66(1):982-991. doi: 10.1016/j.parint.2016.11.002. Epub 2016 Nov 9.
The trematode from the Russian Southern Far East, earlier defined as M. yokogawai Katsuradai, 1912, was determined as a representative of the new species Metagonimus suifunensis sp. n. The life cycle of this trematode was experimentally studied and morphometric data for the cercariae, metacercariae and adult worm stages were obtained. The molecular data for samples from six Russian localities were received using the ITS1-5.8S-ITS2 region and 28S gene nuclear ribosomal DNA. The results revealed that M. suifunensis sp. n. does not have significant morphometric differences with M. yokogawai, M. takahashii and M. miyatai. However, the new species validity was confirmed by the molecular data. The phylogenetic relationship analysis of Metagonimus representatives showed that M. suifunensis sp. n. is well-differentiated specie with low variability in the whole area.
来自俄罗斯远东地区南部的吸虫，早期被定义为1912年的横川后殖吸虫（Metagonimus yokogawai Katsuradai），现被确定为新物种绥芬河后殖吸虫（Metagonimus suifunensis sp. n.）的代表。对该吸虫的生命周期进行了实验研究，并获得了尾蚴、囊蚴和成虫阶段的形态测量数据。利用核糖体DNA的ITS1-5.8S-ITS2区域和28S基因，获取了来自俄罗斯六个地区样本的分子数据。结果表明，绥芬河后殖吸虫与横川后殖吸虫、高桥后殖吸虫和宫田后殖吸虫在形态测量上没有显著差异。然而，分子数据证实了该新物种的有效性。后殖吸虫代表种的系统发育关系分析表明，绥芬河后殖吸虫是一个分化良好的物种，在整个区域内变异性较低。
