Using potential reproductive rates to predict mating competition among individuals qualified to mate
Using potential reproductive rates to predict mating competition among individuals qualified to mate
复制标题
DOI：
10.1093/beheco/12.4.397
复制
发表时间：
2001-07-01
影响因子：
2.4
通讯作者：
Merilaita, S
中科院分区：
文献类型：
--
作者：
Ahnesjö, I;Kvarnemo, C;Merilaita, S
潜在繁殖率（PRR）是指在不受配偶可用性限制的情况下，每种性别单位时间内的后代产量，通常在性别之间存在差异。PRR的性别差异越来越大，预示着PRR越高的性别之间的交配竞争越激烈。PRR的使用可以提供详细的预测，何时，何地，以及如何在交配竞争的强度，因此性选择将发生变化。以前的模型都集中在“超时”从配偶搜索作为PRR的主要组成部分。在这里，我们提出了一些改进和澄清：在一个种群中，个体必须竞争特定的资源，这是交配的先决条件（例如，巢址），无法获得这种资源的个体将没有资格交配。我们建议如何一个概念的比例的男性和女性有资格交配，Q可以改善以前的模型设计使用的性别差异PRR估计的操作性比（OSR）。此外，当估计人口的PRR的性别差异时，重要的是每个性别都可以自由接近交配伴侣。共同，这提供了一个经验的方法的基础上估计Q和PRR的性别差异。
The potential reproductive rate (PRR), which is the offspring production per unit time each sex would achieve if unconstrained by mate availability, often differs between the sexes. An increasing sexual difference in PRR predicts an intensified mating competition among the sex with the higher PRR. The use of PRR can provide detailed predictions of when, where, and how the intensity in mating competition and hence sexual selection will vary. Previous models have focused on the "time out" from mate searching as a major component of PRR. Here, we suggest some improvements and clarifications: in a population where individuals have to compete for specific resources that are prerequisites for mating (e.g., nest sites), individuals unable to obtain such a resource will not qualify to mate. We suggest how a concept of the ratio of males and females qualified to mate, Q can improve previous models designed to use the sexual difference in PRR to estimate the operational sex ratio (OSR). Further, when estimating the sexual difference in PRR of a population, it is important that each sex is given free access to mating partners. Jointly, this provides an empirical approach based on estimates of Q and the sexual difference in PRR.