Parasitism, host immune function, and sexual selection.

Détails

ID Serval
serval:BIB_C31AD6A66AC0
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Parasitism, host immune function, and sexual selection.
Périodique
Quarterly Review of Biology
Auteur(s)
Møller A.P., Christe P., Lux E.
ISSN
0033-5770 (Print)
ISSN-L
0033-5770
Statut éditorial
Publié
Date de publication
1999
Peer-reviewed
Oui
Volume
74
Numéro
1
Pages
3-20
Langue
anglais
Résumé
Parasite-mediated sexual selection may arise as a consequence of 1) females avoiding mates with directly transmitted parasites, 2) females choosing less-parasitized males that provide parental care of superior quality, or 3) females choosing males with few parasites in order to obtain genes for parasite resistance in their offspring. Studies of specific host-parasite systems and comparative analyses have revealed both supportive and conflicting evidence for these hypotheses. A meta-analysis of the available evidence revealed a negative relationship between parasite load and the expression of male secondary sexual characters. Experimental studies yielded more strongly negative relationships than observations did, and the relationships were more strongly negative for ectoparasites than for endoparasites. There was no significant difference in the magnitude of the negative effect for species with and without male parental care, or between behavioral and morphological secondary sexual characters. There was a significant difference between studies based on host immune function and those based on parasite loads, with stronger effects for measures of immune function, suggesting that the many negative results from previous analyses of parasite-mediated sexual selection may be explained because relatively benign parasites were studied. The multivariate analyses demonstrating strong effect sizes of immune function in relation to the expression of secondary sexual characters, and for species with male parental care as compared to those without, suggest that parasite resistance may be a general determinant of parasite-mediated sexual selection.
Mots-clé
Animals, Female, Genitalia, Male/anatomy & histology, Host-Parasite Interactions, Immune System/physiology, Male, Reproduction, Selection, Genetic, Sexual Behavior, Animal
Pubmed
Web of science
Création de la notice
24/01/2008 20:14
Dernière modification de la notice
20/08/2019 16:38
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