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

Details

Serval ID
serval:BIB_CE7234504038
Type
Article: article from journal or magazin.
Collection
Publications
Title
Parental characteristics versus egg survival: towards an improved genetic management in the supportive breeding of lake whitefish
Journal
Annales Zoologici Fennici
Author(s)
Wedekind C., Muller R.
ISSN
0003-455X
Publication state
Published
Issued date
02/2004
Peer-reviewed
Oui
Volume
41
Number
1
Pages
105-115
Language
english
Notes
http://www.sekj.org/PDF/anzf41/anzf41-105.pdf
Abstract
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.
Keywords
effective population-size sexual selection oncorhynchus-mykiss rainbow-trout parasites benefits variance quality
Web of science
Create date
25/01/2008 11:43
Last modification date
20/08/2019 16:49
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