Estimating individual contributions to population growth: evolutionary fitness in ecological time
Estimating individual contributions to population growth: evolutionary fitness in ecological time
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DOI：
10.1098/rspb.2005.3357
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发表时间：
2006-03-07
影响因子：
4.7
通讯作者：
Gaillard, JM
中科院分区：
文献类型：
--
作者：
Coulson, T;Benton, TG;Gaillard, JM
生态和进化变化是由个体表现的变化产生的。因此，生物学家长期以来一直对将种群水平上测量的变化分解为个体的贡献、他们表达的特征和他们携带的等位基因感兴趣。我们提出了一种估算个体对种群增长的贡献以及数量性状和等位基因分布变化的新方法。个体对种群增长的贡献就是个体实现的年度适应度。我们展示了我们开发的数量如何用于解决一系列实证问题，并为Soay羊的详细数据集提供了应用程序。该方法提供的结果与使用个体绩效终生估计值获得的结果一致，但实际上更强大，因为它允许将终生绩效分解为每年的存活率和繁殖力贡献。
Ecological and evolutionary change is generated by variation in individual performance. Biologists have consequently long been interested in decomposing change measured at the population level into contributions from individuals, the traits they express and the alleles they carry. We present a novel method of estimating individual contributions to population growth and changes in distributions of quantitative traits and alleles. An individual's contribution to population growth is an individual's realized annual fitness. We demonstrate how the quantities we develop can be used to address a range of empirical questions, and provide an application to a detailed dataset of Soay sheep. The approach provides results that are consistent with those obtained using lifetime estimates of individual performance, yet is substantially more powerful as it allows lifetime performance to be decomposed into annual survival and fecundity contributions.