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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Genetic structure in a dynamic baboon hybrid zone corroborates behavioural observations in a hybrid population
Molecular Ecology, Volume 21, No. 3, Year 2012
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Description
Behaviour and genetic structure are intimately related: mating patterns and patterns of movement between groups or populations influence the movement of genetic variation across the landscape and from one generation to the next. In hybrid zones, the behaviour of the hybridizing taxa can also impact the incidence and outcome of hybridization events. Hybridization between yellow baboons and anubis baboons has been well documented in the Amboseli basin of Kenya, where more anubis-like individuals tend to experience maturational and reproductive advantages. However, it is unknown whether these advantages are reflected in the genetic structure of populations surrounding this area. Here, we used microsatellite genotype data to evaluate the structure and composition of baboon populations in southern Kenya. Our results indicate that, unlike for mitochondrial DNA, microsatellite-based measures of genetic structure concord with phenotypically based taxonomic distinctions and that the currently active hybrid zone is relatively narrow. Isolation with migration analysis revealed asymmetric gene flow in this region from anubis populations into yellow populations, in support of the anubis-biased phenotypic advantages observed in Amboseli. Populations that are primarily yellow but that receive anubis gene flow exhibit higher levels of genetic diversity than yellow populations far from the introgression front. Our results support previous work that indicates a long history of hybridization and introgression among East African baboons. Specifically, it suggests that anubis baboons are in the process of gradual range expansion into the range of yellow baboons, a pattern potentially explained by behavioural and life history advantages that correlate with anubis ancestry. © 2011 Blackwell Publishing Ltd.
Authors & Co-Authors
Charpentier, Marie J.E.
France, Montpellier
Centre D’ecologie Fonctionnelle et Evolutive
Fontaine, Michaël C.
France, Orsay
Laboratoire Écologie, Systématique et Évolution
France, Paris
Cnrs Centre National de la Recherche Scientifique
Cherel, E.
France, Montpellier
Centre D’ecologie Fonctionnelle et Evolutive
Renoult, Julien Pierre
Germany, Freiburg Im Breisgau
Universität Freiburg
Jenkins, T.
France, Montpellier
Centre D’ecologie Fonctionnelle et Evolutive
Benoit, Laure
France, Montpellier
Centre D’ecologie Fonctionnelle et Evolutive
France, Paris
Cirad
Barthès, N.
France, Montpellier
Centre D’ecologie Fonctionnelle et Evolutive
Alberts, Susan C.
United States, Durham
Duke University
Kenya, Nairobi
National Museums of Kenya
Tung, Jenny
United States, Chicago
The University of Chicago
Statistics
Citations: 118
Authors: 9
Affiliations: 8
Identifiers
Doi:
10.1111/j.1365-294X.2011.05302.x
ISSN:
09621083
e-ISSN:
1365294X
Research Areas
Genetics And Genomics
Sexual And Reproductive Health
Study Design
Cross Sectional Study
Cohort Study
Study Locations
Kenya