Origin and Genetic Uniformity of Introduced Population of Cynops pyrrhogaster (Amphibia: Urodela) on Hachijojima Island

Atsushi Tominaga; V. Benno Meyer-Rochow; Taku Okamoto; Takeo Kuriyama; Kanto Nishikawa; Masafumi Matsui

doi:10.5358/hsj.35.64

Current Herpetology

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Origin and Genetic Uniformity of Introduced Population of Cynops pyrrhogaster (Amphibia: Urodela) on Hachijojima Island

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Authors: Atsushi Tominaga¹, V. Benno Meyer-Rochow^2,3, Taku Okamoto⁴, Takeo Kuriyama⁵, Kanto Nishikawa⁶, Masafumi Matsui⁶

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Source: Current Herpetology Volume 35, Issue 1, 64 - 68 (2016); http://dx.doi.org/10.5358/hsj.35.64

Publisher: UniBio Press

Abstract

Using mitochondrial DNA sequences, we surveyed genetic features of 12 individuals of Cynops pyrrhogaster introduced into Hachijojima Island, in order to estimate their possible origin in the main islands of Japan. The phylogenetic analysis revealed that the 12 examined newts of the introduced population display no genetic diversity and share characteristics with the conspecific population of Shikoku and thus belong to the WESTERN Clade proposed by earlier studies. Our results suggest that the Hachijojima population, having experienced a drastic founder effect, stems from very few individuals from the Shikoku District approximately 650 km to the west.

DOI: http://dx.doi.org/10.5358/hsj.35.64

Accepted 28 12月 2015

Acknowledgments:

We thank K. Araya, T. Abe, C. Chiba, K. Eto, T. Hayashi, T. Irie, T. Johnson, K. Kikusui, Y. Kokuryo, Mm. Matsui, Y. Misawa, K. Mochida, Y. Nakano, H. Nishitani, S. Okada, S. Sato, M. Sakamoto, T. Shimada, T. Sugahara, T. Sugihara, S. Tanabe, Y. Tateishi, late T. and Y. Utsunomiya, A. Watanabe, and N. Yoshikawa for help in collecting newt specimens. We also thank two anonymous reviewers for their helpful and constructive comments that greatly contributed to improving our manuscript. This work was supported by Grants-in-Aid from the Ministry of Education, Science, Sports and Culture, Japan, through the Japan Society for the Promotion of Science to AT (Nos. 22770087, 25870572) and MM (Nos. 20510215, 23510294).

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