Abstract—

The distribution and some ecological features of the European grayling Thymallus thymallus are studied in the extreme European Northeast of Russia. In many water systems of the region the state of the species is close to natural one. A significant ecological and genetic diversity of the populations is found. According to the ratio of genotype frequencies of the polymorphic two allelic system of blood serum transferrins the grayling populations in the Pechora River system can be combined into two clusters, Ural and Timan ones which differ from the groupings of the Kola Peninsula. It is suggested that a wide spectrum of ecological conditions provides a successful existence of all species diversity of European grayling in the northeast of the European part of Russia.

中文翻译：

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欧洲东北俄罗斯河豚胸腺（Thymallus thymallus）（Thymallidae）的分布和生物学特征

摘要-

在俄罗斯的欧洲东北部，研究了欧洲河鳟Thymallus thymallus的分布和一些生态特征。在该地区的许多水系统中，物种的状态接近自然状态。发现了种群的显着生态和遗传多样性。根据血清转铁蛋白的多态性两个等位基因系统的基因型频率之比，可以将佩乔拉河系统中的河豚种群合并为两个聚类，乌拉尔聚类和提曼聚类与科拉半岛的分组不同。有人认为，广泛的生态条件可以在俄罗斯欧洲部分的东北部成功地存在欧洲河豚的所有物种多样性。