Gavrilets S, Arnqvist G, Friberg U
Department of Ecology, University of Tennessee, Knoxville 37996-1610, USA.
Proc Biol Sci. 2001 Mar 7;268(1466):531-9. doi: 10.1098/rspb.2000.1382.
Although empirical evidence has shown that many male traits have evolved via sexual selection by female mate choice, our understanding of the adaptive value of female mating preferences is still very incomplete. It has recently been suggested that female mate choice may result from females evolving resistance rather than attraction to males, but this has been disputed. Here, we develop a quantitative genetic model showing that sexual conflict over mating indeed results in the joint evolution of costly female mate choice and exaggerated male traits under a wide range of circumstances. In contrast to tradition explanations of costly female mate choice, which rely on indirect genetic benefits, our model shows that mate choice can be generated as a side-effect of females evolving to reduce the direct costs of mating.
尽管实证证据表明，许多雄性特征是通过雌性配偶选择的性选择进化而来的，但我们对雌性交配偏好的适应性价值的理解仍然非常不完整。最近有人提出，雌性配偶选择可能是雌性进化出对雄性的抵抗力而非吸引力的结果，但这一观点存在争议。在这里，我们建立了一个数量遗传模型，表明在广泛的情况下，交配过程中的性冲突确实会导致代价高昂的雌性配偶选择和夸张的雄性特征共同进化。与传统上对代价高昂的雌性配偶选择的解释（依赖于间接遗传益处）不同，我们的模型表明，配偶选择可以作为雌性进化以降低交配直接成本的副作用而产生。
