Chromosomal polymorphism in the gray shrew Crocidura attenuata (Mammalia : Insectivora)

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概要

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• Conventional and G-banded karyotypes of Crocidura attenuata Milne-Edwards, 1872 from Guangdong, southern China, are reported. The diploid chromosome number (2n) varied from 35 to 38among specimens, while the fundamental arm number (FN) consistently was 54. Of the autosomes, 14 pairs including four meta- or submetacentric, three subtelocentric, and seven acrocentric pairs showed no variation in all specimens,, whereas the remaining pairs showed Robertsonian polymorphism. The X and Y chromosomes were medium sized submetacentric and small acrocentric chromosomes, respectively. These karyotypes differ from that of C. attenuata from Taiwan, which has 40 chromosomes with 56 arms. Such differences are largely attributable to a non-Robertsonian rearrangement, where both 2n and FN values are different from each other. The largest metacentric pair observed in karyotypes from Guangdong may have resulted from the centromere-telomere translocation between an acrocentric and a subtelocentric pairs of karyotype homologous to that from Taiwan. Both morphometric difference and sequence divergence in mitochondrial cytochrome b gene between samples from Guangdong and Taiwan was relatively small. However, the nonRobertsonian rearrangement assumed between karyotypes of the shrews from Guangdong and Taiwan suggest that they are reproductively isolated from each other. The eastern continental and Taiwanese populations therefore may represent different species under the names, C. attenuata (sensu stricto), and C. tanakae Kuroda, 1938, respectively.

• 社団法人日本動物学会の論文
• 2001-11-01

著者

• 鈴木 仁

  北海道大学大学院地球環境科学研究院

• 本川 雅治

  京大・総合博

• 原田 正史

  大阪市立大学医学部実験動物学研究室

• 原田 正史

  大阪市大医

• 原田 正史

  大阪市大・医・実験動物

• 原田 正史

  大阪市大医医動物

• 原田 正史

  大阪市立大学医学部動物実験施設

• 鈴木 仁

  東京慈恵会医科大学

• WU Yi

  Department of Clinical and Laboratory Medicine, Yamanashi Medical University

• 鈴木 仁

  北大院・地球環境

• 鈴木 仁

  北大・院地球環境

• 林 良恭

  台湾東海大生物

• Lin L‐k

  Tunghai Univ. Taichung Twn

• Lin L‐k

  台湾東海大学

• Lin Liang-kong

  Laboratory Of Wildlife Ecology Department Of Biology Tunghai University

• 林 良恭

  東海大学生物学系野生動物生態学研究室

• Lin Liang-kong

  東海大学野生動物生態研究所

• Lin Liang-kong

  Laboratory Of Wildlife Ecology Department Of Life Science Tunghai University

• Lin Liang-kong

  Zoological Laboratory Faculty Of Agriculture Kyushu University

• Lin Liang-kong

  Department Of Life Science Tunghai University

• LIN Liang

  台湾東海大学野生生物生態学研究室

• Motokawa Masaharu

  The Kyoto University Museum

• Harada Masashi

  Laboratory Animal Center, Osaka City University Medical School

• Suzuki Hitoshi

  Division of Bioscience, Graduate School of Environmental Earth Science, Hokkaido University

• Harada M

  Osaka City Univ. Medical School Osaka Jpn

• Wu Yi

  Department Of Child Health Care The Children's Hospital Of Zhejiang University School Of Medici

• 本川 雅治

  The Kyoto University Museum

• 本川 雅治

  京都大学大学院理学科動物学教室

• Suzuki H

  Laboratory Of Ecology And Genetics Graduate School Of Environmental Earth Science Hokkaido Universit

• 原田 正志

  宇宙航空研究開発機構航空プログラムグループ無人機・未来型航空機チーム

• Wu Yi

  Department Of Biology Sichuan Teachers College

• 原田 正志

  Jaxa

• Harada Masashi

  Laboratory Animal Center Graduate School Of Medicine Osaka City University

• WU Yi

  College of Life Science, Guangzhou University

• Lin Liang‐kong

  Laboratory Of Wildlife Ecology Department Of Life Science Tunghai University

• Suzuki H

  Laboratory Of Ecology And Genetics Graduate School Of Environmental Earth Science Hokkaido Universit

• Suzuki Hitoshi

  Division Of Bioscience Graduate School Of Environmental Earth Science Hokkaido University

• Motokawa Masaharu

  Kyoto University Museum Kyoto University

• Harada Masashi

  Laboratory Animal Center, Osaka City University Graduate School of Medicine

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