An evolutionary quantitative genetics model for phenotypic (co)variances under limited dispersal, with an application to socially synergistic traits.

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Etat: Public
Version: de l'auteur⸱e
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ID Serval
serval:BIB_74229BFDD758
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
An evolutionary quantitative genetics model for phenotypic (co)variances under limited dispersal, with an application to socially synergistic traits.
Périodique
Evolution; international journal of organic evolution
Auteur⸱e⸱s
Mullon C., Lehmann L.
ISSN
1558-5646 (Electronic)
ISSN-L
0014-3820
Statut éditorial
Publié
Date de publication
09/2019
Peer-reviewed
Oui
Volume
73
Numéro
9
Pages
1695-1728
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
Darwinian evolution consists of the gradual transformation of heritable traits due to natural selection and the input of random variation by mutation. Here, we use a quantitative genetics approach to investigate the coevolution of multiple quantitative traits under selection, mutation, and limited dispersal. We track the dynamics of trait means and of variance-covariances between traits that experience frequency-dependent selection. Assuming a multivariate-normal trait distribution, we recover classical dynamics of quantitative genetics, as well as stability and evolutionary branching conditions of invasion analyses, except that due to limited dispersal, selection depends on indirect fitness effects and relatedness. In particular, correlational selection that associates different traits within-individuals depends on the fitness effects of such associations between-individuals. We find that these kin selection effects can be as relevant as pleiotropy for the evolution of correlation between traits. We illustrate this with an example of the coevolution of two social traits whose association within-individuals is costly but synergistically beneficial between-individuals. As dispersal becomes limited and relatedness increases, associations between-traits between-individuals become increasingly targeted by correlational selection. Consequently, the trait distribution goes from being bimodal with a negative correlation under panmixia to unimodal with a positive correlation under limited dispersal.
Mots-clé
Division of labour, G-matrix evolution, evolutionary branching, island model, social evolution, Division of labor
Pubmed
Web of science
Création de la notice
04/08/2019 15:52
Dernière modification de la notice
23/10/2019 6:13
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