Inbreeding in the greater white-toothed shrew, Crocidura russula.

Détails

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Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_78ABE3415A2E
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Inbreeding in the greater white-toothed shrew, Crocidura russula.
Périodique
Evolution
Auteur(s)
Duarte L.C., Bouteiller C., Fontanillas I.P., Petit E., Perrin N.
ISSN
0014-3820[print], 0014-3820[linking]
Statut éditorial
Publié
Date de publication
2003
Peer-reviewed
Oui
Volume
57
Numéro
3
Pages
638-645
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
We combined mark-and-recapture studies with genetic techniques of parentage assignment to evaluate the interactions between mating, dispersal, and inbreeding, in a free-ranging population of Crocidura russula. We found a pattern of limited and female-biased dispersal, followed by random mating within individual neighborhoods. This results in significant inbreeding at the population level: mating among relatives occurs more often than random, and F(IT) analyses reveal significant deficits in heterozygotes. However, related mating partners were not less fecund, and inbred offspring had no lower lifetime reproductive output. Power analyses show these negative results to be quite robust. Absence of phenotypic evidence of inbreeding depression might result from a history of purging: local populations are small and undergo disequilibrium gene dynamics. Dispersal is likely caused by local saturation and (re)colonization of empty breeding sites, rather than inbreeding avoidance.
Mots-clé
Animals, Animals, Wild, Crosses, Genetic, Environment, Europe, Female, Heterozygote, Inbreeding, Male, Reproduction/genetics, Sex Characteristics, Sexual Behavior, Animal, Shrews/genetics
Pubmed
Web of science
Open Access
Oui
Création de la notice
19/11/2007 10:34
Dernière modification de la notice
20/08/2019 14:35
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