The evolution and consequences of sex-specific reproductive variance.

Détails

Ressource 1Télécharger: BIB_BED65B4D63ED.P001.pdf (1095.93 [Ko])
Etat: Public
Version: Final published version
ID Serval
serval:BIB_BED65B4D63ED
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
The evolution and consequences of sex-specific reproductive variance.
Périodique
Genetics
Auteur(s)
Mullon C., Reuter M., Lehmann L.
ISSN
1943-2631 (Electronic)
ISSN-L
0016-6731
Statut éditorial
Publié
Date de publication
2014
Peer-reviewed
Oui
Volume
196
Numéro
1
Pages
235-252
Langue
anglais
Résumé
Natural selection favors alleles that increase the number of offspring produced by their carriers. But in a world that is inherently uncertain within generations, selection also favors alleles that reduce the variance in the number of offspring produced. If previous studies have established this principle, they have largely ignored fundamental aspects of sexual reproduction and therefore how selection on sex-specific reproductive variance operates. To study the evolution and consequences of sex-specific reproductive variance, we present a population-genetic model of phenotypic evolution in a dioecious population that incorporates previously neglected components of reproductive variance. First, we derive the probability of fixation for mutations that affect male and/or female reproductive phenotypes under sex-specific selection. We find that even in the simplest scenarios, the direction of selection is altered when reproductive variance is taken into account. In particular, previously unaccounted for covariances between the reproductive outputs of different individuals are expected to play a significant role in determining the direction of selection. Then, the probability of fixation is used to develop a stochastic model of joint male and female phenotypic evolution. We find that sex-specific reproductive variance can be responsible for changes in the course of long-term evolution. Finally, the model is applied to an example of parental-care evolution. Overall, our model allows for the evolutionary analysis of social traits in finite and dioecious populations, where interactions can occur within and between sexes under a realistic scenario of reproduction.
Mots-clé
Within-generation variance, convergent stable strategies, dioecious population, probability of fixation, sex-specific evolution
Pubmed
Web of science
Open Access
Oui
Création de la notice
19/10/2013 14:18
Dernière modification de la notice
20/08/2019 16:33
Données d'usage