Petit C, Bourgeron P, Mercot H
Heredity (Edinb). 1980 Oct;45(2):281-92. doi: 10.1038/hdy.1980.68.
The distribution of sexually efficient males has been analysed in two populations made up of 5 times more females than males. When observation stops as soon as the number of inseminated females equals the number of males, 25 per cent of males in both strains had not mated, 50 per cent of the matings were performed by 50 per cent of the males who mated only once and the other 50 per cent of matings were performed by 25 per cent of the males who mated 2 or 3 times. Productivity of the successive matings falls drastically after the third mating. The relative role of sexual selection and multiple matings as components of fitness are discussed, as well as their implications for the effective population size.
在由雌性数量比雄性多5倍的两个种群中，对具有高效性行为的雄性分布情况进行了分析。当授精雌性数量与雄性数量相等时即停止观察，结果发现两个品系中均有25%的雄性未交配，50%的交配是由仅交配过一次的50%的雄性完成的，另外50%的交配是由交配过2至3次的25%的雄性完成的。第三次交配后，连续交配的生育力急剧下降。文中讨论了性选择和多次交配作为适合度组成部分的相对作用，以及它们对有效种群大小的影响。
