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

Proceedings. Biological Sciences
Tim CoulsonJ-M Gaillard

Abstract

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.

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Citations

Jul 16, 2011·Oecologia·Nathalie PettorelliJean-Michel Gaillard
May 15, 2012·Acta Biotheoretica·Marvin Chester
Apr 18, 2013·Heredity·S-Y KimJ Martínez-Padilla
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Jan 31, 2008·Proceedings. Biological Sciences·R H McCleeryA Charmantier
Jan 24, 2008·Proceedings. Biological Sciences·L E B Kruuk, W G Hill
Jun 5, 2008·Proceedings. Biological Sciences·Katie V StopherTim Coulson
Mar 28, 2009·Proceedings. Biological Sciences·Sophie GrangeJean-Michel Gaillard
Jun 18, 2010·Proceedings. Biological Sciences·Thomas E ReedMichael T Kinnison
Oct 4, 2013·Proceedings. Biological Sciences·Matthew R EvansTim G Benton
May 6, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·F PelletierA P Hendry
Jun 23, 2010·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Jean-Michel GaillardBram Van Moorter
Dec 7, 2011·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Matthew R Evans
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