2018年5月1日
Species delimitation and biogeography of the Ryukyu ground geckos, Goniurosaurus kuroiwae ssp. (Squamata: Eublepharidae), by use of mitochondrial and nuclear DNA analyses
Journal of Zoological Systematics and Evolutionary Research
- ,
- ,
- 巻
- 56
- 号
- 2
- 開始ページ
- 209
- 終了ページ
- 222
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1111/jzs.12198
- 出版者・発行元
- Blackwell Publishing Ltd
In the Ryukyu Archipelago, Japan, Goniurosaurus geckos are currently divided into six allopatric taxa among nearby islands. Recent studies suggested the occurrence of large genetic divergence within a single island and the possible non-monophyly of a few taxa, but their species delimitation is not well resolved. We investigated the taxonomic relationships between the possibly geographically overlapped, highly diverged entities as well as other island populations via dense sampling. Our mitochondrial and nuclear DNA analyses showed that the two genetic groups were distributed in parapatry within Okinawajima Island and that they were hybridizing in narrow area around the contact zone. Geohistorical evidence suggests that the restricted gene flow has been caused by some intrinsic isolation mechanisms. Thus, we conclude that the two lineages represent full species. Mitochondrial analysis also showed that the genetic differences among other island populations were comparable to those between these species, thereby suggesting the presence of seven full species, including one unnamed taxon. We also discuss the possible cause of this divergence and why it has occurred at such a fine geographic scale.
- リンク情報
- ID情報
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- DOI : 10.1111/jzs.12198
- ISSN : 1439-0469
- ISSN : 0947-5745
- SCOPUS ID : 85044741882