A Paradox of Genetic Variance in Epigamic Traits: Beyond “Good Genes” View of Sexual Selection
A Paradox of Genetic Variance in Epigamic Traits: Beyond “Good Genes” View of Sexual Selection
复制标题
表观性状遗传变异的悖论:超越“良好基因”的性选择观点
DOI:
10.1007/s11692-015-9359-y
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发表时间:
2016
影响因子:
2.5
通讯作者:
Reinhold K
中科院分区:
文献类型:
--
作者:
Radwan J;Engqvist L;Reinhold K
Maintenance of genetic variance in secondary sexual traits, including bizarre ornaments and elaborated courtship displays, is a central problem of sexual selection theory. Despite theoretical arguments predicting that strong sexual selection leads to a depletion of additive genetic variance, traits associated with mating success show relatively high heritability. Here we argue that because of trade-offs associated with the production of costly epigamic traits, sexual selection is likely to lead to an increase, rather than a depletion, of genetic variance in those traits. Such trade-offs can also be expected to contribute to the maintenance of genetic variation in ecologically relevant traits with important implications for evolutionary processes, e.g. adaptation to novel environments or ecological speciation. However, if trade-offs are an important source of genetic variation in sexual traits, the magnitude of genetic variation may have little relevance for the possible genetic benefits of mate choice.
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