Systematic Relationships of Hynobius okiensis among Japanese Salamanders (Amphibia: Caudata)
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概要
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We conducted an electrophoretic survey to examine systematic relationships of a lotic-breeding salamander Hynobius okiensis endemic to Dogo Island of the Oki Islands, Japan, with several lentic and lotic-breeding Japanese species. Genetically H. okiensis with 2n=56 chromosomes was closer to the lentic-breeding H. nebulosus group (H. nebulosus and H. dunni) with the same chromosome number than to the lotic-breeding H. naevius group (H. naevius and H. kimurae) and H. boulengeriwith 58 chromosomes. Chromosome number reduction from 58 to 56, possibly accompanied with a change in breeding environment from streams to still waters, is estimated to have first occurred in the nebulosus group of Hynobius. A reversal only in breeding habits then seems to have followed in steep, montane environments of the small island of Dogo, resulting in the speciation of H. okiensis.
- Zoological Society of Japanの論文
著者
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Min Mi-sook
Department Of Biological Science College Of Natural Sciences Inha University
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Min Mi-sook
Department Of Biology Inha University
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Matsui Masafumi
Kyoto Univ. Kyoto Jpn
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Matsui M
Graduate School Of Human And Environmenal Studies Kyoto University
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Matsui Masafumi
Graduate School of Human and Environmental Studies, Kyoto Univeisity
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Nishikawa Kanto
Graduate School of Human and Environmental Studies, Kyoto University
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