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Title: Allozymic Variation in the Japanese Clawed Salamander, Onychodactylus japonicus (Amphibia: Caudata: Hynobiidae), with Special Reference to the Presence of Two Sympatric Genetic Types
Authors: Yoshikawa, Natsuhiko
Matsui, Masafumi
Nishikawa, Kanto  kyouindb  KAKEN_id
Misawa, Yasuchika
Tanabe, Shingo
Author's alias: 松井, 正文
Keywords: allozyme
geographic variation
cryptic species
reproductive isolation
hynobiid salamander
Issue Date: Jan-2010
Publisher: Zoological Society of Japan
Journal title: Zoological Science
Volume: 27
Issue: 1
Start page: 33
End page: 40
Abstract: We conducted an electrophoretic survey to examine geographic genetic variation in samples from 17 localities of the Japanese clawed salamander, Onychodactylus japonicus. This species was divided into six genetic groups (N-Tohoku, S-Tohoku, Tsukuba, SW-Honshu, Kinki, and Shikoku) that were largely concordant with clades or subclades recognized in our previous mtDNA study. Although the relationships among these six groups were not clarified, genetic distances between them were not small (mean Nel's D=0. 146–0.471). Among these groups, the geographically isolated Tsukuba group was genetically distinct, possibly as a result of population isolation. In a locality of western Honshu, two groups, SW-Honshu and Shikoku, were found to occur sympatrically. Although several presumable hybrid individuals were found, hybridization between these two groups seemed to occur very rarely. These results indicate that the Shikoku group is specifically distinct from the SW-Honshu group, whose range includes the type locality of O. japonicus.
Rights: © 2010 Zoological Society of Japan
DOI(Published Version): 10.2108/zsj.27.33
Appears in Collections:松井 正文

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