Potential genetic benefits of mate selection in whitefish

Détails

ID Serval
serval:BIB_44342479A34B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Potential genetic benefits of mate selection in whitefish
Périodique
Journal of Evolutionary Biology
Auteur⸱e⸱s
Wedekind C., Muller R., Spicher H.
ISSN
1010-061X
Statut éditorial
Publié
Date de publication
2001
Peer-reviewed
Oui
Volume
14
Numéro
6
Pages
980-986
Langue
anglais
Résumé
To test the potential of optimal mate selection with respect to offspring viability, we crossed 10 female and 10 male whitefish in all possible combinations and reared the resulting 100 sib groups in several replicates. We recorded two types of egg mortality, one that was correlated to developmental problems, and a later one that was correlated to a bacterial infection. We found strong maternal and paternal effects in both types of mortality. Early mortality also depended on which female was mated with which male, suggesting partial incompatibilities. The later mortality, but not the former, could be predicted by male breeding ornamentation. More strongly ornamented males sired offspring that better survived the epidemic during egg development. This 'good genes' effect was larger than expected from theory: optimal mate selection Would have improved offspring survival during the epidemic by about 12% (or reduce mortality by about 66%) as compared with random mating.
Mots-clé
breeding tubercles, conservation, Coregonus, genetic heterogeneity, good genes hypotheses, fish hatchery, parasite-driven sexual selection, parasite resistance, Pseudomonas fluorescens, supportive breeding
Web of science
Création de la notice
25/01/2008 10:43
Dernière modification de la notice
20/08/2019 13:48
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