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轮虫种群遗传结构及系统地理格局研究进展

项贤领**,陶媛媛,席贻龙   

  1. (安徽师范大学生命科学学院, 安徽省高校“生物环境与生态安全”省级重点实验室, 安徽芜湖 241000)
  • 出版日期:2015-07-10 发布日期:2015-07-10

Review on phylogeographical pattern and population genetic structure of rotifer.

XIANG Xian-ling**, TAO Yuan-yuan, XI Yi-long   

  1. (College of Life Sciences, Anhui Normal University; Key Laboratory of Biotic Environment and Ecological Safety in Anhui Province, Wuhu 241000, Anhui, China)
  • Online:2015-07-10 Published:2015-07-10

摘要:

轮虫是浮游动物中的重要类群,开展轮虫种群遗传结构及系统地理格局研究对更好地理解种群分化、物种形成、生态适应和历史气候变化等进程具有重要意义。关于轮虫种群的系统地理格局主要包括两种不同的观点:一种观点认为种群的快速增长及其建群效应使得轮虫种群表现出高度的遗传分化和显著的系统地理格局;另一种观点认为,由于浮游动物具有高度的拓殖能力和局域性适应,轮虫种群间不具有系统地理格局。轮虫的种群遗传结构存在着季节变化,这可能会干扰我们对浮游动物系统地理格局的正确认识。本文简述了轮虫种群遗传结构及系统地理格局的研究现状,并对轮虫种群遗传结构及系统地理格局研究进行了展望。

 

关键词: 南设得兰群岛, 空间异质性, 南极磷虾, 地理加权回归, 最小二乘法

Abstract: Rotifer is a major group of zooplankton; studies on its phylogeographical pattern and population genetic structure can make substantial contributions to understanding the processes such as population differentiation, speciation, ecological adaptation and historical climate change. Up to now, two opposite results exist in the phylogeographical pattern of rotifer populations. Firstly, high levels of population genetic subdivision and pronounced phylogeographical structure in rotifers are revealed due to the rapid population growth and founding events. In the second contrasting scenario, due to high dispersal capacity and regional adaptation, no phylogeographical structure is found. Seasonal variation in genetic structure may also bias our understanding of the observed phylogeographical pattern of rotifer populations. In this paper, we summarized the research progress on the phylogeographical pattern and population genetic structure of rotifer and gave a perspective on this field.

Key words: geographically weighted regression (GWR), South Shetland Islands, least square model, Antarctic krill, spatial heterogeneity.