Phylogenetic Relationships among Seven Taxa of the Japanese Microtine Voles Revealed by Karyological and Biochemical Techniques : Taxonomy and Systematics

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Chromosomes and 15 different protein systems of seven taxa of the Japanese microtine voles were examined to establish their phylogenetic relationships, making use of differential staining and protein electrophoretic techniques. While interspecific variations in the size of C-bands were observed only in the Y chromosomes, a highly homologous G-banding pattern as well as the karyotypic similarity were found among the microtine taxa examined, indicating that all of the microtine taxa here dealt with are regarded to be closely related to each other. The biochemical dendrogram for the seven taxa constructed from the Nei's genetic distances between taxa by using the UPGMA clustering method showed that the seven microtine taxa could be classified into three groups, though the differences of the D values were small in general, and this classification was well consistent with the karyological evidence of the interspecific Y-chromosome variations and their geographic distribution pattern. Furthermore, the electrophoretic results indicated that the andersoni complex should be classified not as a member of the genus Aschizomys or Eothenomys, but as that of the genus Clethrionomys, and that both andersoni and niigatae may still be at the subspecies level from their high genetic similarity. Phylogenetic relationships among the Japanese microtine voles are discussed in some detail from karyological and biochemical viewpoints.
社団法人日本動物学会の論文
1989-04-15

Phylogenetic Relationships among Seven Taxa of the Japanese Microtine Voles Revealed by Karyological and Biochemical Techniques : Taxonomy and Systematics

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