Altruism, dispersal, and phenotype-matching kin recognition.

Détails

Ressource 1Télécharger: BIB_6A43F762AD01.P001.pdf (443.65 [Ko])
Etat: Public
Version: de l'auteur⸱e
ID Serval
serval:BIB_6A43F762AD01
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Altruism, dispersal, and phenotype-matching kin recognition.
Périodique
American Naturalist
Auteur⸱e⸱s
Lehmann L., Perrin N.
ISSN
1537-5323[electronic], 0003-0147[linking]
Statut éditorial
Publié
Date de publication
2002
Volume
159
Numéro
5
Pages
451-468
Langue
anglais
Notes
Publication types: Journal Article Publication Status: ppublish
Résumé
We investigate the coevolution between philopatry and altruism in island-model populations when kin recognition occurs through phenotype matching. In saturated environments, a good discrimination ability is a necessary prerequisite for the emergence of sociality. Discrimination decreases not only with the average phenotypic similarity between immigrants and residents (i.e., with environmental homogeneity and past gene flow) but also with the sampling variance of similarity distributions (a negative function of the number of traits sampled). Whether discrimination should rely on genetically or environmentally determined traits depends on the apportionment of phenotypic variance and, in particular, on the relative values of e (the among-group component of environmental variance) and r (the among-group component of genetic variance, which also measures relatedness among group members). If r exceeds e, highly heritable cues do better. Discrimination and altruism, however, remain low unless philopatry is enforced by ecological constraints. If e exceeds r, by contrast, nonheritable traits do better. High e values improve discrimination drastically and thus have the potential to drive sociality, even in the absence of ecological constraints. The emergence of sociality thus can be facilitated by enhancing e, which we argue is the main purpose of cue standardization within groups, as observed in many social insects, birds, and mammals, including humans.
Mots-clé
game theory, heritability, inclusive fitness, kin competition, quantitative genetics, social evolution
Pubmed
Web of science
Open Access
Oui
Création de la notice
19/11/2007 10:31
Dernière modification de la notice
20/08/2019 14:25
Données d'usage