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Colonization history of the Japanese water shrew Chimarrogale platycephala, in the Japanese Islands

100%

Iwasa M. A., Abe H.

Acta Theriologica

2006

tom 51

nr 1

29-38

To evaluate the intraspecific evolutionary history and local differentiation of the Japanese water shrewChimarrogale platycephala (Temminck, 1842), we an a lyzed the mitochondrial cytochromeb (Cytb) sequence divergence for samples from 55 localities in the Japanese is lands of Honshu and Kyushu. According to phylogenetic trees based on theCytb data, there were fourCytb haplotype lineages, which showed rough affinities with geographic areas, namely, Eastern/Central Honshu, the Kinki District of Western Honshu, the Chugoku District of Western Honshu, and Kyushu. However, in the alpine areas of the boundary between the Kinki and Chugoku Districts, complicated distribution patterns of theCytb haplotypes were revealed. Considering the present data and geological history in the Quaternary, we hypothesized the following evolutionary scenario. First, differ entiation and division into four primary ancestral geographic colonies of the shrews occurred in hypothetical refugia in the mid — late Pleistocene. Subsequently, rapid expansion occurred and caused the complicated distribution patterns of theCytb haplotypes in the boundary areas owing to the complex topography during the late stage of the Quaternary.

Molecular phylogeny of Crocidura shrews in Northeastern Asia: A special reference to specimens on Cheju Island, South Korea

61%

Han S. H., Iwasa M. A., Ohdachi S. D., Oh H. S., Suzuki H., Tsuchiya K., Abe H.

Acta Theriologica

2002

tom 47

nr 4

Molecular phylogeny of crocidurine shrews (Insectivora, Soricidae) in northeastern Asia was investigated to confirm the taxonomic status of unidentified specimens of Crocidura from Cheju Island, South Korea. Phylogenetic trees were constructed by neighbor-joining (NJ) and maximum likelihood (ML) methods, based on mitochondrial cytochrome b gene sequences (402 base pairs) of 37 individuals of seven crocidurine species and three unidentified specimens from 31 localities mainly in northeastern Asia. Phylogenetic position of the three unidentified specimens from Cheju Island were compared with those of Suncus murinus, C. attenuata, C. dsinezumi, C. lasiura, C. sibirica, C. suaveolens, and C. watasei. Both in NJ and ML trees, the three unidentified specimens were included in the cluster of C. dsinezumi and were obviously different from C. suaveolens on Cheju Island. Thus, the present investigation demonstrated that both C. suaveolens and C. dsinezumi exist on Cheju Island.

Ograniczanie wyników

2 Acta Theriologica

2 Abe H.

2 Iwasa M. A.

1 Han S. H.

1 Oh H. S.

1 Ohdachi S. D.

1 Suzuki H.

1 Tsuchiya K.

1 2006

1 2002

Wyniki wyszukiwania

Colonization history of the Japanese water shrew Chimarrogale platycephala, in the Japanese Islands

Molecular phylogeny of Crocidura shrews in Northeastern Asia: A special reference to specimens on Cheju Island, South Korea