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

100%

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.

Geographic variation in the Japanese white-toothed shrew Crocidura dsinezumi

84%

Motokawa M.

Acta Theriologica

2003

tom 48

nr 2

I investigated geographic variation in the Japanese white-toothed shrew Crocidura dsinezumi (Temminck, 1842) (Insectivora, Soricidae) from the Japanese Archipelago and the northern part of the Ryukyu Archipelago. Univariate and multivariate analyses were conducted based on 11 cranial measurements from 14 sampling localities. Overall size variation seemed to follow clinal changes correlated with latitude and longitude of localities, such that northeastern populations were smaller than southwestern ones. The Hokkaido population and the Kuchinoerabujima population were larger than expected based on estimated values, likely due to changes reflecting environmental factors. In contrast, the Tanegashima population was smaller than its estimated value. The northern Ryukyu populations were divergent from the Kyushu population and from each other. Based on patterns of geographic variation, I suggest that all previously described subspecies of C. dsinezumi are junior synonyms of C. dsinezumi; and that the Kuchinoerabujima population and the Nakanoshima population likely represent un- described subspecies.

Ograniczanie wyników

2 Acta Theriologica

1 Abe H.

1 Han S. H.

1 Iwasa M. A.

1 Motokawa M.

1 Oh H. S.

1 Ohdachi S. D.

1 Suzuki H.

1 Tsuchiya K.

1 2003

1 2002

Wyniki wyszukiwania

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

Geographic variation in the Japanese white-toothed shrew Crocidura dsinezumi