Parental characteristics versus egg survival: towards an improved genetic management in the supportive breeding of lake whitefish

Détails

ID Serval
serval:BIB_CE7234504038
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Parental characteristics versus egg survival: towards an improved genetic management in the supportive breeding of lake whitefish
Périodique
Annales Zoologici Fennici
Auteur⸱e⸱s
Wedekind C., Muller R.
ISSN
0003-455X
Statut éditorial
Publié
Date de publication
02/2004
Peer-reviewed
Oui
Volume
41
Numéro
1
Pages
105-115
Langue
anglais
Notes
http://www.sekj.org/PDF/anzf41/anzf41-105.pdf
Résumé
A number of sexual selection models predict that reproductive success in the wild is positively linked to heritable viability (e.g. the "good genes" models). Here we explore whether there is information about heritable viability that could potentially be used in the hatchery management of Alpine lake whitefish (Coregonus sp.). We drew 20 wild-caught individuals out of a breeding program, crossed them in a fully balanced 10 females x 10 males mating design, and incubated each sibship in several replicates until hatching. We then compared egg survival with parental characteristics. Egg number or milt volume were not significantly correlated with egg survival, nor was egg size. However, female size and age, and male quality indicators such as condition factor, breeding ornamentation, and fluctuating asymmetry, were useful predictors of egg survival. We discuss the possibility that a promotion of heritable viability could be carefully balanced with the maintenance of genetic variation in order to maximize the survival prospects of a population.
Mots-clé
effective population-size sexual selection oncorhynchus-mykiss rainbow-trout parasites benefits variance quality
Web of science
Création de la notice
25/01/2008 11:43
Dernière modification de la notice
20/08/2019 16:49
Données d'usage