Evolutionary Stability of Jointly Evolving Traits in Subdivided Populations.

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Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_2D41BD2B173B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Evolutionary Stability of Jointly Evolving Traits in Subdivided Populations.
Périodique
American Naturalist
Auteur(s)
Mullon C., Keller L., Lehmann L.
ISSN
1537-5323 (ISSNElectronic)
ISSN-L
0003-0147
Statut éditorial
Publié
Date de publication
2016
Volume
188
Numéro
2
Pages
175-195
Langue
anglais
Résumé
The evolutionary stability of quantitative traits depends on whether a population can resist invasion by any mutant. While uninvadability is well understood in well-mixed populations, it is much less so in subdivided populations when multiple traits evolve jointly. Here, we investigate whether a spatially subdivided population at a monomorphic equilibrium for multiple traits can withstand invasion by any mutant or is subject to diversifying selection. Our model also explores the correlations among traits arising from diversifying selection and how they depend on relatedness due to limited dispersal. We find that selection tends to favor a positive (negative) correlation between two traits when the selective effects of one trait on relatedness is positively (negatively) correlated to the indirect fitness effects of the other trait. We study the evolution of traits for which this matters: dispersal that decreases relatedness and helping that has positive indirect fitness effects. We find that when dispersal cost is low and the benefits of helping accelerate faster than its costs, selection leads to the coexistence of mobile defectors and sessile helpers. Otherwise, the population evolves to a monomorphic state with intermediate helping and dispersal. Overall, our results highlight the effects of population subdivision for evolutionary stability and correlations among traits.
Pubmed
Web of science
Open Access
Oui
Création de la notice
06/11/2017 10:39
Dernière modification de la notice
20/08/2019 13:12
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