MODELS OF SPECIATION BY SEXUAL SELECTION ON POLYGENIC TRAITS
MODELS OF SPECIATION BY SEXUAL SELECTION ON POLYGENIC TRAITS
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DOI：
10.1073/pnas.78.6.3721
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发表时间：
1981-01-01
期刊：
影响因子：
--
通讯作者：
LANDE, R
中科院分区：
文献类型：
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作者：
LANDE, R
在高等动物中，雌性交配偏好和雄性第二性征的联合进化是以一夫多妻制物种为模型的，其中雄性只为下一代提供遗传物质，而雌性有许多潜在的配偶可供选择。尽管稳定了雄性的自然选择，但各种类型的交配偏好可能会造成失控的过程，其中表型进化的结果关键取决于种群的遗传变异参数和初始条件。即使没有遗传不稳定性，自然选择和性选择与沿着平衡线的随机遗传漂变的相互作用也可能导致快速进化。这些模型显示了可以通过性隔离和第二性特征的分化来启动或促进快速物种形成的遗传机制。
In higher animals, the joint evolution of female mating preferences and secondary sexual characteristics of males is modeled for polygamous species in which males provide only genetic material to the next generation and females have many potential mates to choose from. Despite stabilizing natural selection on males, various types of mating preferences may create a runaway process in which the outcome of phenotypic evolution depends critically on the genetic variation parameters and initial conditions of a population. Even in the absence of genetic instability, rapid evolution can result from an interaction of natural and sexual selection with random genetic drift along lines of equilibria. The models show genetic mechanisms that can initiate or contribute to rapid speciation by sexual isolation and divergence of secondary sexual characters.