Clonal diversity and substantial genetic divergence of the Daphnia similis species complex in Chinese lakes: Possible adaptations to the uplift of the Qinghai‐Tibetan Plateau
Clonal diversity and substantial genetic divergence of the Daphnia similis species complex in Chinese lakes: Possible adaptations to the uplift of the Qinghai‐Tibetan Plateau
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DOI：
10.1002/lno.11335
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发表时间：
2019-10
影响因子：
4.5
通讯作者：
Xiaolin Ma;Yijun Ni;Xiaoyun Wang;Wei Hu;Mingbo Yin
中科院分区：
文献类型：
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作者：
Xiaolin Ma;Yijun Ni;Xiaoyun Wang;Wei Hu;Mingbo Yin
青藏高原水生无脊椎浮游动物的地理分布和遗传多样性研究较少。该地区的地质隆起创造了特殊的环境，需要适应性的遗传多样性的居民血统。在这里，我们开发并使用了第一组高分辨率微卫星标记用于Daphnia similis物种复合体。我们在中国的23个（303个）湖泊中筛选了这一物种，覆盖了大的地理和生态栖息地。高种群克隆多样性的D.无论其地理来源如何，都发现了similis物种复合体。然而，四个西藏中华水蚤种群表现出显着较低的克隆多样性。有趣的是，D.来自中国东部和中国西部青藏高原两个地区的中华绒螯蟹种群被发现彼此明显分化。湖居住的西部D。中华绒螯蟹的营养水平较低，海拔较高，冬季易受冻。该研究有助于了解青藏高原淡水无脊椎动物对特殊环境的适应。
Very few studies have focused on the biogeography and genetic diversity of aquatic invertebrate zooplankton from the Qinghai‐Tibetan Plateau, an important biogeographic hotspot. The geological uplift of this region created special environments requiring adaptive genetic diversification of the resident lineages. Here, we developed and used the first set of high‐resolution microsatellite markers for the Daphnia similis species complex. We screened this species in 23 (out of 303) lakes across China, covering a large geographical and ecological range of habitats. High population clonal diversity of the D. similis species complex was found, regardless of their geographical origin. However, four Tibetan Daphnia sinensis populations showed substantially lower clonal diversity. Interestingly, D. sinensis populations from two regions, Eastern China and the Qinghai‐Tibetan Plateau of Western China, were found to be clearly differentiated from each other. Lakes inhabited by Western D. sinensis were of a lower trophic level, higher altitude, and more likely to freeze in the winter. This study contributes to an understanding of adaptation to their special environments by the freshwater invertebrates in the Qinghai‐Tibetan Plateau.