FEMALE COPYING INCREASES THE VARIANCE IN MALE MATING SUCCESS

被引:141
作者
WADE, MJ
PRUETTJONES, SG
机构
关键词
evolution; female choice; sexual selection;
D O I
10.1073/pnas.87.15.5749
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Theoretical models of sexual selection assume that females choose males independently of the actions and choice of other individual females. Variance in male mating success in promiscuous species is thus interpreted as a result of phenotypic differences among males which females perceive and to which they respond. Here we show that, if some females copy the behavior of other females in choosing mates, the variance in male mating success and therefore the opportunity for sexual selection is greatly increased. Copying behavior is most likely in non-resource-based harem and lek mating systems but may occur in polygynous, territorial systems as well. It can be shown that copying behavior by females is an adaptive alternative to random choice whenever there is a cost to mate choice. We developed a statistical means of estimating the degree of female copying in natural populations where it occurs.
引用
收藏
页码:5749 / 5753
页数:5
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