Mate choice increases a component of offspring fitness in fruit flies
Mate choice increases a component of offspring fitness in fruit flies
复制标题
配偶选择增加了果蝇后代健康的一个组成部分
作者：
L. Partridge
两个关于配偶选择的遗传后果的有影响力的报告的作者认为，动物不能通过与比平均个体更健康的个体交配来产生更健康的后代。他们这样做的主要原因是，在一个处于遗传平衡的群体中，任何影响适应性的遗传变异都不应该是遗传的。其他的解释也提出了配偶选择可能改善后代健康的方法。现在提出的数据表明，一个组件的后代健身可以增加在果蝇的配偶选择。适合度的组成部分是从一龄幼虫到成蝇的生活史中的种内竞争成功。
The authors of two influential accounts of the genetic consequences of mate choice consider that animals cannot produce fitter offspring by mating with a fitter than average individual1,2. Their main reason for this is that in a population at genetic equilibrium any genetic variation which affects fitness should not be heritable3. Other accounts have suggested ways in which mate choice might improve offspring fitness4. Data are now presented which show that one component of offspring fitness can be increased by mate choice in Drosophila melanogaster. The component of fitness measured was intraspecific competitive success during the part of the life history from first instar larva to adult fly.