HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
共同研究拠点  >
21世紀COEプログラム「新・自然史科学創成」  >
Origin and Evolution of Natural Diversity >
Proceedings >

Taxonomic, Genetic and Ecological Status of the Daikoku Vole

p145-150-origin08.pdf348.64 kBPDF見る/開く

タイトル: Taxonomic, Genetic and Ecological Status of the Daikoku Vole
著者: Saitoh, Takashi 著作を一覧する
de Guia, Anna Pauline 著作を一覧する
Kato, Yoshie 著作を一覧する
Maekawa, Koji 著作を一覧する
キーワード: Clethrionomys rufocanus
Daikoku Island
The gray-sided vole
発行日: 2008年
出版者: 21st Century COE for Neo-Science of Natural History, Hokkaido University
引用: Edited by Hisatake Okada, Shunsuke F. Mawatari, Noriyuki Suzuki, Pitambar Gautam. ISBN: 978-4-9903990-0-9
誌名: Origin and Evolution of Natural Diversity : Proceedings of the International Symposium, The Origin and Evolution of Natural Diversity, held from 1-5 October 2007 in Sapporo, Japan
開始ページ: 145
終了ページ: 150
抄録: Based on their skull morphology voles found on Daikoku Island have been regarded as a distinct form of Clethrionomys rufocanus (Sundevall, 1846) but their taxonomic status has been controversial: the vole population on this island was once identified to be a subspecies of Neoashizomys sikotanensis Tokuda, 1935, then named N. s. akkeshii, but Ota (1956) insisted that the voles there are C. rufocanus. Their ecological features are also fascinating; their population abundance greatly fluctuates from extremely low to very high densities. Because of these unique morphological and ecological characteristics distinct genetic features are also expected compared with those of the mainland voles. We thus compared the ecological, morphological, and genetic features of the voles from Daikoku Island with populations from mainland Hokkaido. Although the Daikoku population largely fluctuated from low to high density, the amplitude was within the range that has been frequently observed in the eastern part of Hokkaido. A single unique mtDNA haplotype was observed in Daikoku, which was different from the 145 haplotypes observed in the mainland and other island populations, though they were closely related each other. Genetic diversity indices of the Daikoku population were greatly lower than those of mainland populations. Our results on the cranial measurements were consistent with those of Ref. 4, 5 that the Daikoku voles, generally, have larger skull dimensions than those of the mainland. Principal Component Analysis indicated morphological differentiation between the Daikoku voles and those of the mainland. Our genetic and morphological results confirm that the Daikoku vole is a local form of the gray-sided vole, Clethrionomys rufocanus, which relatively recently originated from mainland Hokkaido.
記述: International Symposium, "The Origin and Evolution of Natural Diversity". 1–5 October 2007. Sapporo, Japan.
資料タイプ: proceedings


本サイトに関するご意見・お問い合わせは repo at へお願いします。 - 北海道大学