ORNAMENTS OR OFFSPRING - COSTS TO REPRODUCTIVE SUCCESS RESTRICT SEXUAL SELECTION PROCESSES
ORNAMENTS OR OFFSPRING - COSTS TO REPRODUCTIVE SUCCESS RESTRICT SEXUAL SELECTION PROCESSES
复制标题
DOI：
10.1111/j.1095-8312.1995.tb01063.x
复制
发表时间：
1995-07-01
影响因子：
1.9
通讯作者：
ROSENQVIST, G
中科院分区：
文献类型：
--
作者：
FITZPATRICK, S;BERGLUND, A;ROSENQVIST, G
如果男性在选择伴侣时寻求直接利益（多产的女性），那么结果将是选择表明女性品质的特征，而不是任意的（费舍尔）特征。然而，发展和维持性选择特征（装饰品）的成本可能会减少雌性可用于繁殖的资源，从而导致每窝繁殖成功率较低。这种迄今为止未被认识到的性选择特征的生育成本将限制性选择机制的效力和女性性选择特征的精细化程度，并且也适用于投资于其后代的男性：性选择变得自我限制。在各种交配和父母照顾模式中，研究了这些成本对两性的适应性影响。作用于两性的性选择可能导致二态性或单态性，后者是当两性选择的质量指标一致时的情况。规避或减少分配给性选择特征的繁殖成本的方法包括使用不同的资源成分用于装饰和繁殖，或及时划分这两种分配。 (C) 1995 伦敦林奈学会
If, in their partner choice, males seek direct benefits (fecund females), the result will be selection for traits indicating female quality rather than for arbitrary (Fisherian) traits. However, the costs of developing and maintaining the sexually selected traits (ornaments) may reduce the resources available to the female for allocation to reproduction and hence result in lower reproductive success per brood. This hitherto unrecognized fecundity cost of sexually selected traits will constrain both the potency of sexual selection mechanisms and the degree of elaboration of sexually selected traits in females, and can also apply to males which invest in their offspring: sexual selection becomes self-limiting. The fitness implications of these costs are examined for both sexes in a variety of mating and parental care patterns. Sexual selection acting on both sexes may lead to either dimorphism or monomorphism, the latter being the case when the quality indicators chosen by both sexes coincide. Ways of evasion or reduction of these reproductive costs of allocations to sexually selected traits include using different resource components for the ornament and for reproduction, or partitioning the two allocations in time. (C) 1995 The Linnean Society of London