A model for the evolution of assortative mating
A model for the evolution of assortative mating
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DOI：
10.1086/587062
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发表时间：
2008-05-01
影响因子：
2.9
通讯作者：
Kirkpatrick, M.
中科院分区：
文献类型：
--
作者：
De Cara, M. A. R.;Barton, N. H.;Kirkpatrick, M.
许多动物和植物在交配对中表现出个体特征之间的相关性，这意味着选型交配。鉴于自然界中普遍存在的选择性交配，它为什么以及如何进化仍然是一个悬而未决的问题。在这里，我们试图回答这些问题，在这些情况下，被分类的性状在男性和女性中是相同的。我们考虑了最有利于组合进化的情况，即同一性状同时处于组合和生存力选择下。我们发现了在单倍体种群中使用多位点形式进化的配种条件。我们的研究结果表明，控制焦点性状的位点之间的适应性上位性对配种进化至关重要。然后，我们假设单倍体和二倍体的特定配种形式，并研究选择性和非选择性交配的限制情况。我们发现增加品种的选择是弱的，在增加品种代价高的地方，它不会入侵。
Many animals and plants show a correlation between the traits of the individuals in the mating pair, implying assortative mating. Given the ubiquity of assortative mating in nature, why and how it has evolved remain open questions. Here we attempt to answer these questions in those cases where the trait under assortment is the same in males and females. We consider the most favorable scenario for assortment to evolve, where the same trait is under assortment and viability selection. We find conditions for assortment to evolve using a multilocus formalism in a haploid population. Our results show how epistasis in fitness between the loci that control the focal trait is crucial for assortment to evolve. We then assume specific forms of assortment in haploids and diploids and study the limiting cases of selective and nonselective mating. We find that selection for increased assortment is weak and that where increased assortment is costly, it does not invade.