文献一覧: Han Sang-Hoon (著者)

1 0 0 0 OA Phylogeographic patterning of mtDNA in the widely distributed harvest mouse (Micromys minutus) suggests dramatic cycles of range contraction and expansion during the mid- to late Pleistocene

著者: Yasuda Shumpei P Vogel Peter Tsuchiya Kimiyuki Han Sang-Hoon Lin Liang-Kong Suzuki Hitoshi
出版者: National Research Council Canada
雑誌: Canadian Journal of Zoology (ISSN:00084301)
巻号頁・発行日: vol.83, no.11, pp.1411-1420, 2005-11
被引用文献数: 50

We examined sequence variation in the mitochondrial cytochrome b gene (1140 bp, n = 73) and control region (842–851 bp, n = 74) in the Eurasian harvest mouse (Micromys minutus (Pallas, 1771)), with samples drawn from across its range, from Western Europe to Japan. Phylogeographic analyses revealed region-specific haplotype groupings combined with overall low levels of inter-regional genetic divergence. Despite the enormous intervening distance, European and East Asian samples showed a net nucleotide divergence of only 0.36%. Based on an evolutionary rate for the cytochrome b gene of 2.4%·(site·lineage·million years)–1, the initial divergence time of these populations is estimated at around 80 000 years before present. Our findings are consistent with available fossil evidence that has recorded repeated cycles of extinction and recolonization of Europe by M. minutus through the Quaternary. The molecular data further suggest that recolonization occurred from refugia in the Central to East Asian region. Japanese haplotypes of M. minutus, with the exception of those from Tsushima Is., show limited nucleotide diversity (0.15%) compared with those found on the adjacent Korean Peninsula. This finding suggests recent colonization of the Japanese Archipelago, probably around the last glacial period, followed by rapid population growth.

2022-05-01 13:51:41
1 + 1 Twitter

1 0 0 0 Molecular phylogeny of East Asian moles inferred from the sequence variation of the mitochondrial cytochrome b gene

著者: Tsuchiya Kimiyuki Suzuki Hitoshi Shinohara Akio HARADA Masashi WAKANA Shigeharu SAKAIZUMI Mitsuru HAN Sang-Hoon LIN Liang-Kong KRYUKOV Alexei P.
出版者: The Genetics Society of Japan
雑誌: Genes & genetic systems (ISSN:13417568)
巻号頁・発行日: vol.75, no.1, pp.17-24, 2000-02
被引用文献数: 15 49

Taxonomic analysis has previously revealed that the species of moles that inhabit Japan are characterized by exceptional species richness and a high level of endemism. Here, we focused on the evolutionary history of the four Japanese mole species of the genera Euroscapter and Mogera, examining mitochondrial cytochrome b (cyt b) gene sequences and comparing them with those of continental Mogera wogura (Korean and Russian populations), M. insularis from Taiwan, and Talpa europaea and T. altaica from the western and central Eurasian continent, respectively. Our data support the idea that in a radiation center somewhere on the Eurasian continent, a parental stock evolved to modern mole-like morph and radiated several times intermittently during the course of the evolution, spreading its branches to other peripheral geographic domains at each stage of the radiation. Under this hypothesis, the four lineages of Japanese mole species, E. mizura, M. tokudae, M. imaizumii, and M. wogura, could be explained to have immigrated to Japan in this order. Mogera wogura and M. imaizumii showed substantial amounts of geographic variation and somewhat complicated distributions of the cyt b gene types. These intraspecific variations are likely to be associated with the expansion processes of moles in the Japanese Islands during the Pleistocene glacial ages.

2020-10-23 05:41:00
1 + 2 Wikipedia