Frequency-dependent sexual selection with respect to offspring fitness returns is consistent with predictions from rock-paper-scissors dynamics in the European common lizard

Détails

ID Serval
serval:BIB_1D9B5C77D404
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Frequency-dependent sexual selection with respect to offspring fitness returns is consistent with predictions from rock-paper-scissors dynamics in the European common lizard
Périodique
Frontiers in Ecology and Evolution
Auteur(s)
Fitze P.S., Gonzalez Jimena V., San-Jose L.M., Heulin B., Sinervo B.
ISSN
2296-701X
Statut éditorial
Publié
Date de publication
2014
Peer-reviewed
Oui
Volume
2
Numéro
article 77
Pages
1-11
Langue
anglais
Notes
http://journal.frontiersin.org/Journal/10.3389/fevo.2014.00077/pdf
Résumé
Genetic polymorphism can be maintained over time by negative frequency-dependent (FD) selection induced by Rock-paper-scissors (RPS) social systems. RPS games produce cyclic dynamics, and have been suggested to exist in lizards, insects, isopods, plants, and bacteria. Sexual selection is predicted to accentuate the survival of the future progeny during negative FD survival selection. More specifically, females are predicted to select mates that produce progeny genotypes that exhibit highest survival during survival selection imposed by adult males. However, no empirical evidence demonstrates the existence of FD sexual selection with respect to fitness payoffs of genetic polymorphisms.
Here we tested this prediction using the common lizard Zootoca vivipara, a species with three male color morphs (orange, white, yellow) that exhibit morph frequency cycles. In a first step we tested the congruence of the morph frequency change with the predicted change in three independent populations, differing in male color morph frequency and state of the FD morph cycle. Thereafter we ran standardized sexual selection assays in which we excluded alternative mechanisms that potentially induce negative FD selection, and we quantified inter-sexual behavior. The patterns of sexual selection and the observed behavior were in line with context-dependent female mate choice and male behavior played a minor role. Moreover, the strength of the sexual selection was within the magnitude of selection required to produce the observed 3-4-year and 6-8 year morph frequency cycles at low and high altitudes, respectively. In summary, the study provides the first experimental evidence that underpins the crucial assumption of the RPS games suggested to exist in lizards, insects, isopods, and plants; namely, that sexual selection produces negative-FD selection. This indicates that sexual selection, in our study exert by females, might be a crucial driver of the maintenance of genetic polymorphisms.
Mots-clé
sexual selection, behavior, female mate choice, intra-sexual selection, alternative male mating strategy, color polymorphism, rock-paper-scissors games, Zootoca vivipara
Open Access
Oui
Création de la notice
14/11/2014 16:21
Dernière modification de la notice
08/05/2019 15:24
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