Fiche du document
2008
- doi: 10.1111/j.1420-9101.2007.01447.x
- issn: 1010-061X
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1420-9101.2007.01447.x
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/pmid/17979954
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/eissn/1420-9101
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_54D554B8A6CB1
info:eu-repo/semantics/openAccess , Copying allowed only for non-profit organizations , https://serval.unil.ch/disclaimer
Sujets proches
Selection, SexualCiter ce document
P.S. Fitze et al., « Determinants of male fitness: disentangling intra- and inter-sexual selection. », Serveur académique Lausannois, ID : 10.1111/j.1420-9101.2007.01447.x
Métriques
Partage / Export
Résumé
Both intra- and inter-sexual selection may crucially determine a male's fitness. Their interplay, which has rarely been experimentally investigated, determines a male's optimal reproductive strategy and thus is of fundamental importance to the understanding of a male's behaviour. Here we investigated the relative importance of intra- and inter-sexual selection for male fitness in the common lizard. We investigated which male traits predict a male's access to reproduction allowing for both selective pressures and comparing it with a staged mating experiment excluding all types of intra-sexual selection. We found that qualitatively better males were more likely to reproduce and that sexual selection was two times stronger when allowing for both selective pressures, suggesting that inter- and intra-sexual selection determines male fitness and confirming the existence of multi-factorial sexual selection. Consequently, to optimize fitness, males should trade their investment between the traits, which are important for inter- and intra-sexual selection.