A karyological analysis of the Korean red-backed vole, Eothenomys regulus (Rodentia, Muridae), using differential Staining methods
A karyological analysis of the Korean red-backed vole, Eothenomys regulus (Rodentia, Muridae), using differential Staining methods
复制标题
使用差异染色方法对韩国红背田鼠 Eothenomys regulus（啮齿目，鼠科）进行核学分析
DOI：
10.3106/mammalstudy.24.35
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Hitoshi Suzuki
中科院分区：
文献类型：
--
作者：
M. Iwasa;Sang;Hitoshi Suzuki
The conventional and G- and Q-banded karyotypes of the Korean red-backed vole Eothenomys regulus (2n=56) are described here for the first time. The autosomes were found to be composed of 26 pairs of acrocentrics and one pair of metacentrics, as in other species of red-backed voles. Side-by-side pair-matching analysis revealed that the G-banding patterns of E. regulus were essentially identical to those of the grey red-backed vole Clethrionomys rufocanus, and therefore the karyotype of E. regulus was of a “rufocanus” type, not of a “glareolus” type, which is characterized by 1-9 translocation. The sex chromosomes of E. regulus were found to be composed of a large subtelocentric X chromosome and a medium-sized subtelocentric Y chromosome, closely resembling those of E. smithii in both size and morphology. Both X and Y sex chromosomes were indistinguishable between these species, as far as conventional staining is concerned. Further analysis indicated, however, that E. regulus' Y chromosome has a large C-band area on the terminal half of its long arm, whereas E. smithii has a large C-band area on the proximal half of its long arm. Such C-band patterning implies the involvement of the Y chromosome in paracentric inversion during the course of speciation.
