EJACULATE COST AND MALE CHOICE
EJACULATE COST AND MALE CHOICE
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DOI：
10.1086/283938
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发表时间：
1982-01-01
影响因子：
2.9
通讯作者：
DEWSBURY, DA
中科院分区：
文献类型：
--
作者：
DEWSBURY, DA
根据许多进化论的观点，滥交物种的雄性能够产生数量几乎是无限的精子，应该被选择与所有可用的雌性进行不加选择地交配。精子通常分批输送（射精或精子团），其中可能包含数百万个配子。男性可以射精的次数和恢复耗尽的储备所需的时间都是有限的。由于射精是一种有限的资源，因此在将射精分配给女性时应谨慎。限制与滥交的雄性交配的雌性数量的因素包括高的怀孕起始要求、精子竞争、雌性的选择和控制以及寻找的成本和风险。射精分配的最佳策略将随操作性别比而变化。男性可以并且确实在潜在的交配对象中歧视女性。射精能力限制与男性选择问题在理论和实证研究中都值得重视。
According to much evolutionary thinking, males of promiscuous species are able to produce quantities of sperm that are virtually unlimited and should be selected to mate indiscriminately with all available females. Sperm are generally delivered in batches (ejaculates or spermatophores) that may include many millions of gametes. Males are limited with no respect to the number of ejaculates they can deliver and the time required to restore depleted reserves. Because ejaculates are a limited resource, prudence would be expected in the allocation of ejaculates to females. Among the forces acting to limit the number of females with which a promiscuous male mates are high pregnancy initiation requirements, sperm competition, female choice and control and the costs and risks of searching. Optimal strategies for ejaculate allocation will vary with the operational sex ratio. Males can and do discriminate among females as potential mating partners. The problems of limited ejaculatory capacity and male choice merit greater attention in theory and in empirical research.