日本産リス科動物の進化的歴史 : 各々の属そして種が示す動物地理学的特徴の形成過程を考える(2011年度日本動物分類学会シンポジウム)

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  • Evolutionary history of squirrels occurring in Japan : the process for forming their zoogeographical characteristics(PROCEEDINGS, JSSZ SYMPOSIUM, 2011)
  • 日本産リス科動物の進化的歴史 : 各々の属そして種が示す動物地理学的特徴の形成過程を考える
  • ニホンサン リスカ ドウブツ ノ シンカテキ レキシ : オノオノ ノ ゾク ソシテ タネ ガ シメス ドウブツ チリガクテキ トクチョウ ノ ケイセイ カテイ オ カンガエル

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There are six squirrel species in Japan: Petaurista leucogenys, Pteromys momonga, Pteromys volans, Sciurus Us, Sciurus vulgaris, and Tamias sibiricus. The retreat of temperate forests during glacial period and geographical isolation by Blakiston's Line at the Tsugaru Strait could have affected their phylogeographical structure and distribution patterns. Petaurista leucogenys is endemic to Honshu, Shikoku, and Kyushu and could be greatly affected by temperate forest dynamics during glaciation. Also endemic to Honshu, Shikoku, and Kyushu, P. momonga and S. Us are respectively closely related to P. volans and S. vulgaris in Hokkaido, Sakhalin, and northern Eurasia and show the effects of geographical isolation by Blakiston's Line. Tamias sibiricus is distributed in Hokkaido, Sakhalin, and northern Eurasia. Blakiston's Line could have also affected its distribution. Based on their mitochondrial DNA sequences and chromosomes, I show that each squirrel species has its own unique evolutionary history.

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