Mitochondrial phylogeny reveals cryptic genetic diversity in the genus Niviventer (Rodentia, Muroidea)
Mitochondrial phylogeny reveals cryptic genetic diversity in the genus Niviventer (Rodentia, Muroidea)
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线粒体系统发育揭示了 Niviventer 属（Rodentia，Muroidea）的隐秘遗传多样性
DOI：
10.3109/19401736.2013.823167
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发表时间：
2015-02-01
影响因子：
--
通讯作者：
Jiang, Xue-Long
中科院分区：
文献类型：
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作者：
He, Kai;Jiang, Xue-Long
白腹鼠属是一种分布广泛的鼠科动物，共有17种，分布于东亚和东南亚。这些动物是现存和化石小型哺乳动物群落的重要组成部分，也是人类最常见的传染源之一。在这项研究中，我们采用了分区贝叶斯和放松的时钟离散分析，并包括从GenBank（n = 223）的Niviventer线粒体细胞色素B基因。虽然属内的关系没有完全解决，我们认识到四个主要的分支/亚分支，可以支持属的进一步划分。通过种的划分分析，共鉴定出21个种，表明该种的分类不完善，存在隐种。分子测年结果支持鼠腹兽起源于中新世晚期，上新世晚期和更新世的物种多样性较高，这可能与气候波动有关。
Abstract Niviventer is a muroid genus with 17 species widely distributed in East and Southeast Asia. These animals are important components of both extant and fossil small mammal communities, and they are among the most common infectious agents in humans. In this study, we employed partitioned Bayesian and relaxed clock divergence dating analyses and included the Niviventer mitochondrial cytochrome b genes of from GenBank (n = 223). Although the intra-generic relationships were not fully resolved, we recognized four major clades/subclades that could support further division of the genus. Paraphyletic and polyphyletic species were discovered, and 21 putative species were recognized through species delimitation analysis, which indicated an imperfect taxonomy and the existent of cryptic species. Molecular dating supported Niviventer origination in the late Miocene, and relatively higher diversification rates were observed in the late Pliocene and the Pleistocene, which might correlate with climate fluctuations.