Introduction of Trojan sex chromosomes to boost population growth.

Details

Serval ID
serval:BIB_37B43BB118AF
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Introduction of Trojan sex chromosomes to boost population growth.
Journal
Journal of Theoretical Biology
Author(s)
Cotton S., Wedekind C.
ISSN
0022-5193[print], 0022-5193[linking]
Publication state
Published
Issued date
2007
Peer-reviewed
Oui
Volume
249
Number
1
Pages
153-161
Language
english
Abstract
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.
Keywords
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
Create date
25/01/2008 10:43
Last modification date
20/08/2019 13:26
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