Genetic evidence for female-biased dispersal and gene flow in a polygynous primate.
Details
State: Public
Version: author
Serval ID
serval:BIB_DC17D0ABFDFA
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Genetic evidence for female-biased dispersal and gene flow in a polygynous primate.
Journal
Proceedings of the Royal Society of London B Biological Sciences
ISSN
0962-8452 (Print)
ISSN-L
0962-8452
Publication state
Published
Issued date
2006
Volume
273
Number
1585
Pages
479-484
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Publication Status: ppublish
Abstract
Many models of sex-biased dispersal predict that the direction of sex-bias depends upon a species' mating system. In agreement with this, almost all polygynous mammals show male-biased dispersal whereas largely monogamous birds show female-biased dispersal (FBD). The hamadryas baboon (Papio hamadryas hamadryas) is polygynous and so dispersal is predicted to be male biased, as is found in all other baboon subspecies, but there are conflicting field data showing both female and male dispersal. Using 19 autosomal genetic markers genotyped in baboons from four Saudi Arabian populations, we found strong evidence for FBD in post-dispersal adults but not, as expected, in pre-dispersal infants and young juveniles, when we compared male and female: population structure (F(st)), inbreeding (F(is)), relatedness (r), and the mean assignment index (mAIc). Furthermore, we found evidence for female-biased gene flow as population genetic structure (F(st)), was about four times higher for the paternally inherited Y, than for either autosomal markers or for maternally inherited mtDNA. These results contradict the direction of sex-bias predicted by the mating system and show that FBD has evolved recently from an ancestral state of male-biased dispersal. We suggest that the cost-benefit balance of dispersal to males and females is tightly linked to the unique hierarchical social structure of hamadryas baboons and that dispersal and social organization have coevolved.
Keywords
Animal Migration, Animals, DNA, Mitochondrial/genetics, Female, Gene Flow/genetics, Male, Microsatellite Repeats/genetics, Papio hamadryas/genetics, Type="Geographic">Saudi Arabia, Sexual Behavior, Animal, Y Chromosome/genetics
Pubmed
Web of science
Create date
20/01/2008 16:36
Last modification date
20/08/2019 17:01