Titre
The robustness of the weak selection approximation for the evolution of altruism against strong selection.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Mullon, C.
Auteure/Auteur
Lehmann, L.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1420-9101
Statut éditorial
Publié
Date de publication
2014
Volume
27
Numéro
10
Première page
2272
Dernière page/numéro d’article
2282
Langue
anglais
Résumé
The weak selection approximation of population genetics has made possible the analysis of social evolution under a considerable variety of biological scenarios. Despite its extensive usage, the accuracy of weak selection in predicting the emergence of altruism under limited dispersal when selection intensity increases remains unclear. Here, we derive the condition for the spread of an altruistic mutant in the infinite island model of dispersal under a Moran reproductive process and arbitrary strength of selection. The simplicity of the model allows us to compare weak and strong selection regimes analytically. Our results demonstrate that the weak selection approximation is robust to moderate increases in selection intensity and therefore provides a good approximation to understand the invasion of altruism in spatially structured population. In particular, we find that the weak selection approximation is excellent even if selection is very strong, when either migration is much stronger than selection or when patches are large. Importantly, we emphasize that the weak selection approximation provides the ideal condition for the invasion of altruism, and increasing selection intensity will impede the emergence of altruism. We discuss that this should also hold for more complicated life cycles and for culturally transmitted altruism. Using the weak selection approximation is therefore unlikely to miss out on any demographic scenario that lead to the evolution of altruism under limited dispersal.
PID Serval
serval:BIB_B24CEC1341EF
PMID
Open Access
Oui
Date de création
2017-11-06T09:39:36.435Z
Date de création dans IRIS
2025-05-20T23:13:45Z
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Nom
14SWS.pdf
Version du manuscrit
preprint
Taille
344.19 KB
Format
Adobe PDF
PID Serval
serval:BIB_B24CEC1341EF.P001
URN
urn:nbn:ch:serval-BIB_B24CEC1341EF5
Somme de contrôle
(MD5):b862e2497c920bad5113083ce96dbe6e