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原文連結
論文資訊
- 類型：已發表論文
- 日期：2010
摘要
Ecological speciation is considered an adaptive response to selection for local 適應. However, besides suitable ecological conditions, the process requires assortative mating to protect the nascent 物種 from homogenization by gene flow. By means of a simple model, we demonstrate that disruptive ecological selection favors the 演化 of sexual preferences for ornaments that signal local 適應. Such preferences induce assortative mating with respect to ecological characters and enhance the strength of disruptive selection. Natural and sexual selection thus work in concert to achieve local 適應 and reproductive isolation, even in the presence of substantial gene flow. The resulting speciation process ensues without the divergence of mating preferences, avoiding problems that have plagued previous models o
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