POPULATION GENETICS AND OBJECTIVITY IN SPECIES DIAGNOSIS
POPULATION GENETICS AND OBJECTIVITY IN SPECIES DIAGNOSIS
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DOI：
10.1111/j.1558-5646.2011.01542.x
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发表时间：
2012-05-01
期刊：
影响因子：
3.3
通讯作者：
Pinho, Catarina
中科院分区：
文献类型：
--
作者：
Hey, Jody;Pinho, Catarina
作为进化谱系的物种被认为比物种内的种群表现出更大的进化独立性。两个措施的进化独立性，源于隔离与迁移模型的研究，一个反映的数量的基因交换和一个反映的时间分离，从文献中得出了大量的对密切相关的物种和物种内的人口对。这两种措施，基因流和时间，表现出广泛重叠的分布对物种和物种内的种群对。物种的平均表现出更多的时间和更少的基因流比人口，但分布的相似性反对有一个与物种的状态，相比，人口的质的差异。进化独立性的两个措施，类似地与FST估计，这反过来又表明，物种比较相对于人口比较类似的分布。基因流和分离时间的措施进行了检查的能力，以区分种内差异种间差异。如果一起使用，这两种措施可以用来开发一个客观的（在可重复的意义上）物种诊断措施。
Species as evolutionary lineages are expected to show greater evolutionary independence from one another than are populations within species. Two measures of evolutionary independence that stem from the study of isolation-with-migration models, one reflecting the amount of gene exchange and one reflecting the time of separation, were drawn from the literature for a large number of pairs of closely related species and pairs of populations within species. Both measures, for gene flow and time, showed broadly overlapping distributions for pairs of species and for pairs of populations within species. Species on average show more time and less gene flow than populations, but the similarity of the distributions argues against there being a qualitative difference associated with species status, as compared to populations. The two measures of evolutionary independence were similarly correlated with FST estimates, which in turn also showed similar distributions for species comparisons relative to population comparisons. The measures of gene flow and separation time were examined for the capacity to discriminate intraspecific differences from interspecific differences. If used together, the two measures could be used to develop an objective (in the sense of being repeatable) measure for species diagnosis.