Paternal investment affects prevalence of malaria.

Détails

ID Serval
serval:BIB_2D8C0F276A75
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Paternal investment affects prevalence of malaria.
Périodique
Proceedings of the National Academy of Sciences of the United States of America
Auteur(s)
Richner H., Christe P., Oppliger Anne
ISSN
0027-8424[print], 0027-8424[linking]
Statut éditorial
Publié
Date de publication
1995
Peer-reviewed
Oui
Volume
92
Numéro
4
Pages
1192-1194
Langue
anglais
Résumé
Both reproduction and parasite defense can be costly, and an animal may face a trade-off between investing in offspring or in parasite defense. In contrast to the findings from nonexperimental studies that the poorly reproducing individuals are often the ones with high parasite loads, this life-history view predicts that individuals with high reproductive investment will show high parasite prevalence. Here we provide an experimental confirmation of a positive association between parental investment levels of male great tits Parus major and the prevalence of Plasmodium spp, a hematozoa causing malaria in various bird species. We manipulated brood size, measured feeding effort of both males and females, and assessed the prevalence of the hemoparasite from blood smears. In enlarged broods the males, but not the females, showed significantly higher rates of food provisioning to the chicks, and the rate of malarial infection was found to be more than double in male, but not female, parents of enlarged broods. The findings show that there may be a trade-off between reproductive effort and parasite defense of the host and also suggest a mechanism for the well documented trade-off between current reproductive effort and parental survival.
Mots-clé
Animals, Behavior, Animal, Birds/parasitology, Birds/physiology, Female, Malaria, Avian/epidemiology, Malaria, Avian/parasitology, Male, Plasmodium/isolation & purification, Prevalence, Reproduction
Pubmed
Web of science
Open Access
Oui
Création de la notice
24/01/2008 20:14
Dernière modification de la notice
20/08/2019 14:12
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