Contrasting genetic structure of closely related giant water bugs: phylogeography of Appasus japonicus and Appasus major (Insecta: Heteroptera, Belostomatidae).
Contrasting genetic structure of closely related giant water bugs: phylogeography of Appasus japonicus and Appasus major (Insecta: Heteroptera, Belostomatidae).
复制标题
DOI：
10.1016/j.ympev.2013.12.008
复制
发表时间：
2014-03
影响因子：
4.1
通讯作者：
Tomoya Suzuki;Tadashi Kitano;K. Tojo
中科院分区：
文献类型：
--
作者：
Tomoya Suzuki;Tadashi Kitano;K. Tojo
Appasus japonicusandA.这两种在东亚部分地区发现的巨型水蝽属的belostomatid物种具有非常相似的形态特征和生态位，并且栖息地也重叠。然而，我们以前发表的研究结果利用线粒体和核DNA的分子系统发育分析揭示了广泛的遗传差异，这表明种间杂交的可能性是极不可能的。我们收集了A. japonicusandA.主要分布于日本列岛、朝鲜半岛和俄罗斯远东地区，并通过线粒体DNA COI和16 S rRNA的分子分析比较了这些物种之间的系统发育关系。在A. - 是的来自朝鲜族的标本构成了一个单系分支，是日本列岛西部地区的姐妹群。东日本分支明显分化。在A.少校从日本和韩国人口的标本揭示了两个不同的单系分支。它们的遗传结构存在明显的分化。此外，不匹配分布和贝叶斯天际线分析的结果表明，在两个A的瓶颈效应或创始人效应的可能性。主要分支。总的来说，这些结果表明，这两个物种的相似性和差异，即使它们的分布广泛重叠在东亚，其形态特征和生态位非常相似。遗传结构的这些差异被认为是由于它们的进化历史。
Appasus japonicusandA. major, two belostomatid species of the giant water bug found in parts of East Asia, have very similar morphological characteristics and ecological niches, and also overlapping habitats. However, the results of our previous published study utilizing molecular phylogenetic analyses of mitochondrial and nuclear DNA revealed extensive genetic differences, which indicated that the possibility of inter-specific hybridization was extremely unlikely. We collectedA. japonicusandA. majorfrom the Japanese Archipelago, Korean Peninsula, and Russian Far East, and conducted molecular analyses of mitochondrial DNA COI and 16S rRNA to compare phylogenetic relationships between these species. Three major clades were recognized withinA. japonicus. Specimens from the Korean population constituted a monophyletic clade, and were a sister group of the western region of the Japanese Archipelago. The Eastern Japanese clade was clearly differentiated. Four major clades were recognized withinA. major. Specimens from the Japanese and Korean populations revealed two distinct monophyletic clades. Significant differentiation was clearly observed between their genetic structures. Furthermore, the results of mismatch distribution and Bayesian skyline plot analyses suggested the possibility of a bottleneck effect or founder effect in two of theA. majorclades. Collectively, these results demonstrated both similarities and differences in these two species even though their distribution widely overlaps in East Asia, with their morphological characteristics and ecological niches being very similar. These differences in genetic structures are considered to be due to their evolutionary history.