Fine-scale spatial genetic structure and genetic diversity among clouded salamander (Hynobius nebulosus) populations
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- YAMANE Akihiro
- Kitakyushu Museum of Natural History & Human History
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- NISHIDA Shin
- Department of Biodiversity Science, Graduate School of Social and Cultural Studies, Kyushu University
書誌事項
- タイトル別名
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- Fine-Scale Spatial Genetic Structure and Genetic Diversity among Clouded Salamander (<i>Hynobius nebulosus</i>) Populations
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We investigated the genetic structure of 16 populations (from five geographical groups) of clouded salamander (Hynobius nebulosus) in northern Kyushu, Japan, by analyzing the sequence of the mitochondrial DNA control region. A total of 24 haplotypes were found in 199 individuals of the salamander. In the analysis of genetic diversity of the populations, an isolated small population sustained in an urban area had a low level of genetic diversity. This is considered to be due to both the less suitable nature of the habitat and a recent artificial barrier to gene flow. In the analysis of genetic differentiation (FST) among 16 populations, significant differences were detected in 76.7% of all possible population pairs. Analysis of molecular variance (AMOVA) showed that most of the genetic variation was attributed to individual differences within populations, but a significant genetic difference among groups was also detected. This fine-scale genetic differentiation would be formed through genetic isolation (or gene flow) by geographic distance, because strong correlations between genetic FST/(1-FST) and geographic distances were detected. In 10 northern populations from two adjacent groups that were separated by a small lowland river there is a significant positive correlation between geographic and genetic distance, but there tends to be a larger genetic distance between the inter-group populations than the distance within groups. These results suggest that even a small lowland river, if combined with past rising of sea level by transgression, might be a landscape barrier to gene flow of this species.<br>
収録刊行物
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- Current herpetology
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Current herpetology 29 (2), 79-90, 2010
日本爬虫両棲類学会
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詳細情報 詳細情報について
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- CRID
- 1390001204712472576
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- NII論文ID
- 130000415073
- 130005404249
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- NII書誌ID
- AA12246863
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- ISSN
- 18811019
- 13455834
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- NDL書誌ID
- 10928168
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可