An Integrative Method for Delimiting Cohesion Species: Finding the Population-Species Interface in a Group of Californian Trapdoor Spiders with Extreme Genetic Divergence and Geographic Structuring
An Integrative Method for Delimiting Cohesion Species: Finding the Population-Species Interface in a Group of Californian Trapdoor Spiders with Extreme Genetic Divergence and Geographic Structuring
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DOI：
10.1080/10635150802302443
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发表时间：
2008-01-01
影响因子：
6.5
通讯作者：
Stockman, Amy K.
中科院分区：
文献类型：
--
作者：
Bond, Jason E.;Stockman, Amy K.
在这里，我们提出了一个客观的，可重复的方法来划定物种时，人口是不同的，高度结构化的地理使用加利福尼亚州的活板门蜘蛛物种复杂Aptostichus atomarius西蒙作为一个模型系统。这一系统特别困难，因为在严格的地理一致性标准下，加上对遗传差异的估计，一个不切实际的种群谱系数将有资格成为物种（20至60）。我们的新的地理学方法，这是普遍适用的，但特别是高度结构化的系统相关，使用系谱排他性建立一个拓扑框架，以检查遗传和生态交换的努力，以划定凝聚力物种的谱系。栖息地和生态位为基础的分布模型的定性评估，以评估遗传谱系之间的选择制度和生态兼容性，种群之间的适应性分歧的权重比简单的地理一致性更重。基于这些分析，我们得出的结论是，五个凝聚力物种应被确认，其中三个是新的科学。
Here we present an objective, repeatable approach to delineating species when populations are divergent and highly structured geographically using the Californian trapdoor spider species complex Aptostichus atomarius Simon as a model system. This system is particularly difficult because under strict criteria of geographical concordance coupled with estimates of genetic divergence, an unrealistic number of population lineages would qualify as species (20 to 60). Our novel phylogeographic approach, which is generally applicable but particularly relevant to highly structured systems, uses genealogical exclusivity to establish a topological framework to examine lineages for genetic and ecological exchangeability in an effort to delimit cohesion species. Both qualitative assessments of habitat and niche-based distribution modeling are employed to evaluate selective regime and ecological interchangeability among genetic lineages; adaptive divergence among populations is weighted more heavily than simple geographical concordance. Based on these analyses we conclude that five cohesion species should be recognized, three of which are new to science.