ダウンロード数: 424
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
s10641-013-0176-9.pdf | 1.23 MB | Adobe PDF | 見る/開く |
タイトル: | Multiple colonizations of Lake Biwa by Sarcocheilichthys fishes and their population history |
著者: | Komiya, Takefumi Fujita-Yanagibayashi, Sari Watanabe, Katsutoshi https://orcid.org/0000-0003-2244-2902 (unconfirmed) |
著者名の別形: | 渡辺, 勝敏 |
キーワード: | Ancient lake Central Japan Gobioninae Historical demography Phylogeography Trophic polymorphism |
発行日: | Jul-2014 |
出版者: | Springer Netherlands |
誌名: | Environmental Biology of Fishes |
巻: | 97 |
号: | 7 |
開始ページ: | 741 |
終了ページ: | 755 |
抄録: | Rapid adaptation and speciation have not been well documented for organisms in Lake Biwa, Japan, the oldest ancient lake in East Asia. To examine these processes, we focused on the divergence of Sarcocheilichthys gudgeons and conducted phylogeographic and population genetic analyses using mitochondrial DNA sequences and microsatellite data. No remarkable genetic differentiation was found between two species, S. biwaensis and S. variegatus microoculus, both endemic to Lake Biwa, whereas this species group, including S. v. variegatus, was genetically divided into three major regional groups: the Lake Biwa, Ise Bay, and western groups. Divergent mtDNA haplotypes were included within the Lake Biwa and western groups, strongly suggesting secondary contacts among allopatrically isolated populations. Dating for mtDNA phylogeny using a geological constraint suggested the colonization of Lake Biwa by multiple Sarcocheilichthys lineages that diverged from each other in the early–middle Pleistocene. Coalescent-based population analyses indicated that the local populations colonized the rocky bottom habitat in Lake Biwa from other habitats after the Last Glacial Maximum, likely reflecting past environmental changes in the lake, including the disappearance of rocky areas during the glacial climate. Divergent morphological adaptation in Sarcocheilichthys associated with substrate type may have rapidly proceeded along with environmental changes. |
著作権等: | The final publication is available at Springer via http://dx.doi.org/10.1007/s10641-013-0176-9. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/199855 |
DOI(出版社版): | 10.1007/s10641-013-0176-9 |
出現コレクション: | 学術雑誌掲載論文等 |
このリポジトリに保管されているアイテムはすべて著作権により保護されています。