Allozymic variation and phylogeography of two genetic types of onychodactylus japonicus (Amphibia: Caudata: Hynobiidae) sympatric in the Kinki District, Japan

Natsuhiko Yoshikawa, Masafumi Matsui, Kanto Nishikawa

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

On the basis of allozyme and mtDNA sequence variation, we elucidated genetic relationships between two sympatric genetic types of Onychodactylus japonicus in Kinki and adjacent districts, and investigated their phylogeography. Allozymic analysis revealed the presence of two distinct genetic types (the SW-Honshu and Kinki groups) in this area, and their sympatric occurrence in three of 10 sampling sites. Fixed or nearly fixed allele differences in several loci strongly suggested reproductive isolation between the two types, although one hybrid specimen was found in a locality. Analyses of mtDNA using 194 specimens from 22 localities also demonstrated two genetic types. From phylogeographic and population genetic analyses, it was surmised that these two types diverged allopatrically, and secondarily contacted to become sympatric by the Pleistocene uplift of mountains. Our results indicate different specific status for these two types and separation of the Kinki group from O. japonicus, to which the SW-Honshu group belongs.

Original languageEnglish
Pages (from-to)344-355
Number of pages12
JournalZoological Science
Volume27
Issue number4
DOIs
Publication statusPublished - 2010 Apr 1
Externally publishedYes

Fingerprint

Caudata
Amphibia
phylogeography
Japan
mitochondrial DNA
reproductive isolation
allozymes
genetic relationships
population genetics
mountains
alleles
loci
Hynobiidae
sampling

Keywords

  • Allopatric speciation
  • Allozyme
  • Cryptic species
  • MtDNA
  • Onychodactylus japonicus
  • Phylogeography

ASJC Scopus subject areas

  • Animal Science and Zoology

Cite this

Allozymic variation and phylogeography of two genetic types of onychodactylus japonicus (Amphibia : Caudata: Hynobiidae) sympatric in the Kinki District, Japan. / Yoshikawa, Natsuhiko; Matsui, Masafumi; Nishikawa, Kanto.

In: Zoological Science, Vol. 27, No. 4, 01.04.2010, p. 344-355.

Research output: Contribution to journalArticle

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