Genealogy and palaeodrainage basins in Yunnan Province: phylogeography of the Yunnan spiny frog, Nanorana yunnanensis (Dicroglossidae)
Genealogy and palaeodrainage basins in Yunnan Province: phylogeography of the Yunnan spiny frog, Nanorana yunnanensis (Dicroglossidae)
复制标题
云南省谱系和古流域：云南刺蛙Nanorana yunnanensis（Dicroglossidae）的系统发育地理学
DOI：
10.1111/j.1365-294x.2010.04747.x
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发表时间：
2010-08-01
影响因子：
4.9
通讯作者：
Zhang, Ya-Ping
中科院分区：
文献类型：
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作者：
Zhang, Dong-Ru;Chen, Ming-Yong;Zhang, Ya-Ping
青藏高原附近历史上的排水模式与今天有很大不同。我们利用蛋白质编码基因 ND1 和 ND2 的线粒体 DNA 部分序列的约 981 个碱基对以及包括完整 tRNAIle、tRNAGln 和 tRNAMet 在内的干预区域，研究了云南刺蛙（Nanorana yunnanensis）的排水历史和遗传变异地理模式之间的关系。测试了两个零假设：(i) 遗传模式与排水系统的发展不相符；(ii) 种群一直稳定，没有经历种群扩张、瓶颈和选择。家谱分析确定了三个主要的、得到充分支持的母系，每个母系都有两个子系。这些不同的谱系与六个地理区域完全一致。遗传结构和分化与历史而不是当代的排水模式非常一致。大多数谱系和亚谱系是在上新世早期和更新世早期古排水盆地重新排列过程中通过群体破碎而形成的。同域谱系仅发生在主要流域边界的地方，可能反映了先前异域种群的二次接触。大规模的人口扩张可能发生在中更新世早期，伴随着剧烈的气候波动。
Historical drainage patterns adjacent to the Qinghai-Tibetan Plateau differed markedly from those of today. We examined the relationship between drainage history and geographic patterns of genetic variation in the Yunnan spiny frog, Nanorana yunnanensis, using approximately 981 base pairs of mitochondrial DNA partial sequences from protein-coding genes ND1 and ND2, and intervening areas including complete tRNAIle, tRNAGln and tRNAMet. Two null hypotheses were tested: (i) that genetic patterns do not correspond to the development of drainage systems and (ii) that populations had been stable and not experienced population expansion, bottlenecking and selection. Genealogical analyses identified three, major, well-supported maternal lineages, each of which had two sublineages. These divergent lineages were completely concordant with six geographical regions. Genetic structure and divergence were strongly congruent with historical rather than contemporary drainage patterns. Most lineages and sublineages were formed via population fragmentation during the rearrangement of paleodrainage basins in the Early Pliocene and Early Pleistocene. Sympatric lineages occurred only in localities at the boundaries of major drainages, likely reflecting secondary contact of previously allopatric populations. Extensive population expansion probably occurred early in the Middle Pleistocene accompanying dramatic climatic oscillations.