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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Molecular evidence for ecological speciation in tropical habitats
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Molecular evidence for ecological speciation in tropical habitats

机译：热带栖息地生态物种形成的分子证据

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Recent research on rainforest speciation has highlighted the importance of habitat variation in generating population diversification but lacks evidence of an associated reduction in gene flow. This paper describes a study in which molecular markers were used to examine the effects of allopatric divergence and habitat on levels of gene flow in the Caribbean lizard, Anolis roquet. Three study transects were constructed to compare variation in micro-satellite allele frequencies and morphology across phylogenetic and habitat boundaries in northern Martinique. Results showed reductions in gene flow to be concordant with divergent selection for habitat type. No evidence could be found for divergence in allopatry influencing current gene flow. Morphological data match these findings, with multivariate analysis showing correlation with habitat type but no grouping by phylogenetic lineage. The results support the ecological speciation model of evolutionary divergence, indicating the importance of habitats in biodiversity generation.
机译：最近对雨林物种形成的研究强调了生境变化在产生种群多样化方面的重要性，但缺乏证据表明基因流会减少。本文描述了一项研究，其中使用分子标记来检查异源异体和生境对加勒比蜥蜴Anolis roquet中基因流水平的影响。构建了三个研究样带，以比较马提尼克岛北部的系统发育和生境边界上的微卫星等位基因频率和形态变化。结果表明基因流的减少与栖息地类型的不同选择相一致。没有证据表明异基因影响当前基因流的差异。形态学数据与这些发现相符，多变量分析显示与栖息地类型相关，但没有根据系统发生谱系进行分组。结果支持进化差异的生态物种模型，表明栖息地在生物多样性产生中的重要性。

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