Phylogeography of the Siberian weasel (Mustela sibirica), based on a mitochondrial DNA analysis

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  • Keita Ishikawa
    Department of Natural History Sciences, Graduate School of Science, Hokkaido University, Sapporo, Japan
  • Alexei V Abramov
    Zoological Institute, Russian Academy of Sciences, Saint Petersburg, Russia
  • Yosuke Amaike
    Department of Biological Sciences, Faculty of Science, Hokkaido University, Sapporo, Japan
  • Yoshinori Nishita
    Department of Biological Sciences, Faculty of Science, Hokkaido University, Sapporo, Japan
  • Ryuichi Masuda
    Department of Natural History Sciences, Graduate School of Science, Hokkaido University, Sapporo, Japan

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<jats:title>Abstract</jats:title><jats:p>We investigated the genetic diversity and distribution pattern of mitochondrial DNA control-region haplotypes across the distributional range of the Siberian weasel (Mustela sibirica) in Eastern Eurasia. We identified 23 haplotypes from 65 individuals sampled from 21 localities. Our analyses showed two major phylogeographical groups: group I comprised continental Russia, Tsushima and Korea, and group II comprised China, Taiwan and Korea. Two novel haplotypes found in the Amur area and one from Gansu Province were closely related to the Tsushima and Taiwan clades, respectively. Phylogeographical and demographic analyses indicated a recent population expansion for group I, whereas no clear evidence for expansion was obtained for group II. The recent expansion of group I is also supported by historical records. Closely related haplotypes were found between the continental populations and the insular populations on Tsushima and Taiwan, suggesting that the ancestors of the insular populations immigrated from the continent via land bridges. The two groups could have evolved allopatrically in parts of eastern Asia differing in climate and vegetation.</jats:p>

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