Estimating individual contributions to population growth: evolutionary fitness in ecological time

被引:173
作者
Coulson, T
Benton, TG
Lundberg, P
Dall, SRX
Kendall, BE
Gaillard, JM
机构
[1] Univ London Imperial Coll Sci Technol & Med, Div Biol, Fac Life Sci, Ascot SL5 7PY, Berks, England
[2] Univ London Imperial Coll Sci Technol & Med, Ctr Populat Biol, Fac Life Sci, Ascot SL5 7PY, Berks, England
[3] Univ Leeds, Sch Biol, Leeds LS2 9JT, W Yorkshire, England
[4] Lund Univ, Dept Theoret Ecol, S-22362 Lund, Sweden
[5] Univ Exeter, Ctr Ecol & Conservat, Penryn TR10 9EZ, England
[6] Univ Calif Santa Barbara, Donald Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA
[7] Univ Lyon 1, UMR 5558, F-69622 Villeurbanne, France
基金
英国自然环境研究理事会;
关键词
de-lifing; selection; fitness; cohort effects; demography;
D O I
10.1098/rspb.2005.3357
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
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.
引用
收藏
页码:547 / 555
页数:9
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