Introduction of Trojan sex chromosomes to boost population growth.

Détails

Ressource 1Télécharger: Cotton_&_Wedekind_2007_JTB (postprint).pdf (884.05 [Ko])
Etat: Public
Version: Author's accepted manuscript
Licence: Non spécifiée
ID Serval
serval:BIB_37B43BB118AF
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Introduction of Trojan sex chromosomes to boost population growth.
Périodique
Journal of Theoretical Biology
Auteur⸱e⸱s
Cotton S., Wedekind C.
ISSN
0022-5193
Statut éditorial
Publié
Date de publication
2007
Peer-reviewed
Oui
Volume
249
Numéro
1
Pages
153-161
Langue
anglais
Résumé
Conservation programs that deal with small or declining populations often aim at a rapid increase of population size to above-critical levels in order to avoid the negative effects of demographic stochasticity and genetic problems like inbreeding depression, fixation of deleterious alleles, or a general loss of genetic variability and hence of evolutionary potential. In some situations, population growth is determined by the number of females available for reproduction, and manipulation of family sex ratios towards more daughters has beneficial effects. If sex determination is predominantly genetic but environmentally reversible, as is the case in many amphibia, reptiles, and fish, Trojan sex chromosomes could be introduced into populations in order to change sex ratios towards more females. We analyse the possible consequences for the introduction of XX-males (XX individuals that have been changed to phenotypic males in a XY/XX sex determination system) and ZW males, WW males, or WW females (in a ZZ/ZW sex determination system). We find that the introduction of WW individuals can be most effective for an increase of population growth, especially if the induced sex change has little or no effect on viability.
Mots-clé
Amphibians/genetics, Animals, Breeding, Extinction, Biological, Female, Fishes/genetics, Genetics, Population, Male, Population Dynamics, Population Growth, Reproduction, Sex Ratio, Sex Reversal, Gonadal
Pubmed
Web of science
Création de la notice
25/01/2008 10:43
Dernière modification de la notice
25/03/2021 7:08
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