Invasion fitness, inclusive fitness, and reproductive numbers in heterogeneous populations.

Détails

ID Serval
serval:BIB_6C23B5214691
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Invasion fitness, inclusive fitness, and reproductive numbers in heterogeneous populations.
Périodique
Evolution
Auteur(s)
Lehmann L., Mullon C., Akçay E., Van Cleve J.
ISSN
1558-5646 (Electronic)
ISSN-L
0014-3820
Statut éditorial
Publié
Date de publication
2016
Peer-reviewed
Oui
Volume
70
Numéro
8
Pages
1689-1702
Langue
anglais
Résumé
How should fitness be measured to determine which phenotype or "strategy" is uninvadable when evolution occurs in a group-structured population subject to local demographic and environmental heterogeneity? Several fitness measures, such as basic reproductive number, lifetime dispersal success of a local lineage, or inclusive fitness have been proposed to address this question, but the relationships between them and their generality remains unclear. Here, we ascertain uninvadability (all mutant strategies always go extinct) in terms of the asymptotic per capita number of mutant copies produced by a mutant lineage arising as a single copy in a resident population ("invasion fitness"). We show that from invasion fitness uninvadability is equivalently characterized by at least three conceptually distinct fitness measures: (i) lineage fitness, giving the average individual fitness of a randomly sampled mutant lineage member; (ii) inclusive fitness, giving a reproductive value weighted average of the direct fitness costs and relatedness weighted indirect fitness benefits accruing to a randomly sampled mutant lineage member; and (iii) basic reproductive number (and variations thereof) giving lifetime success of a lineage in a single group, and which is an invasion fitness proxy. Our analysis connects approaches that have been deemed different, generalizes the exact version of inclusive fitness to class-structured populations, and provides a biological interpretation of natural selection on a mutant allele under arbitrary strength of selection.
Mots-clé
Adaptation, invasion fitness, inclusive fitness, reproductive number, uninvadability
Pubmed
Web of science
Création de la notice
29/05/2016 14:29
Dernière modification de la notice
20/08/2019 15:26
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