- 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
- 49
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.
- 著者
- Motokawa Masaharu Suzuki Hitoshi Harada Masashi Lin Liang-Kong Koyasu Kazuhiro Oda Sen-ichi
- 出版者
- 社団法人日本動物学会
- 雑誌
- Zoological science (ISSN:02890003)
- 巻号頁・発行日
- vol.17, no.4, pp.497-504, 2000-05-20
- 被引用文献数
- 5 6
Phylogenetic relationships among the East Asian species of the genus Crocidura (Mammalia, Insectivora, Soricidae) were inferred from the partial sequences (402 base pairs) of the mitochondrial cytochrome b gene. Six species of Crocidura and one representative of another insectivoran genus Suncus were examined. In the neighbor joining tree, four distinct lineages were recognized: C. lasiura from northeastern China and Korea, and C. dsinezumi from the main-islands of Japan; C. attenuata from Taiwan; C. watasei from the Amami and Okinawa Groups, and S. murinus from the Miyako Group; and C. suaveolens from Tsushima and Taiwan, and C. sibirica from Central Asia in Russian territory. All these lineages excluding C. lasiura and C. dsinezumi were also recognized by the maximum parsimony analysis. Clustering of C. watasei with S. murinus suggested the non-monophyly of the genus Crocidura as of the present definition. Biogeographical implications of the present results were also discussed.
- 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 <i>Euroscapter</i> and <i>Mogera</i>, examining mitochondrial cytochrome <i>b</i> (cyt <i>b</i>) gene sequences and comparing them with those of continental <i>Mogera wogura</i> (Korean and Russian populations), <i>M. insularis</i> from Taiwan, and <i>Talpa europaea</i> and <i>T. altaica</i> 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, <i>E. mizura</i>, <i>M. tokudae</i>, <i>M. imaizumii</i>, and <i>M. wogura</i>, could be explained to have immigrated to Japan in this order. <i>Mogera wogura</i> and <i>M. imaizumii</i> showed substantial amounts of geographic variation and somewhat complicated distributions of the cyt <i>b</i> 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.<br>
- 著者
- 桂 幸司 寺田 一樹 力丸 裕 横川 隆一 渡辺 好章 Lin Liang-kong
- 出版者
- 一般社団法人電子情報通信学会
- 雑誌
- 電子情報通信学会技術研究報告. US, 超音波 (ISSN:09135685)
- 巻号頁・発行日
- vol.102, no.655, pp.25-30, 2003-02-14
- 被引用文献数
- 2
2台の高速度ビデオカメラを用いて飛行中のコウモリの軌跡を3次元で解析し,テレメーターマイクを用いて観測した超音波パルスの変化とコウモリと標的までの距離との関係について検討した.その結果,エコーロケーションシステムについて,特にCF,FM,パルス間隔,CF_2周波数,ドップラーシフト補償について,多くの情報を得ることができた.