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Title: Systematic Relationships of Hynobius okiensis among Japanese Salamanders (Amphibia: Caudata)
Authors: Matsui, Masafumi  KAKEN_id
Nishikawa, Kanto  kyouindb  KAKEN_id  orcid (unconfirmed)
Misawa, Yasuchika
Tanabe, Shingo
Author's alias: 松井, 正文
Keywords: allozyme electrophoresis
biochemical systematics
chromosome number
Issue Date: Jul-2007
Publisher: Zoological Society of Japan
Journal title: Zoological Science
Volume: 24
Issue: 7
Start page: 746
End page: 751
Abstract: 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.
Rights: (c) 日本動物学会 / Zoological Society of Japan
DOI(Published Version): 10.2108/zsj.24.746
Appears in Collections:Zoological Science

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