Population genetic structure and dispersal in white-lipped peccaries (Tayassu pecari) from the Brazilian Pantanal
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Alliance Communications Group Division Allen Press
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Article
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Abstract
In many mammals social organization promotes genetic structuring, which can be influenced by the dispersal pattern of the species. We analyzed the population genetic structure and dispersal of white-lipped peccaries (Tayassu pecan) from the Pantanal, Brazil. We genotyped 100 individuals at 7 microsatellite loci from 2 adjacent locations with no obvious geographic barrier between them. We found a significant but low F(ST) value, and the Bayesian analysis indicated a unique cluster. No significant differences were observed between mean assignment indices of resident males and females from both locations, and the probability of being born at the location sampled of > 30% of the individuals analyzed was lower than average. Mean relatedness between resident female, male, and opposite-sex pairs was not statistically different in both locations. These results suggest a low degree of genetic differentiation between the locations analyzed, and dispersal by both sexes (contrary to the predicted male-biased dispersal of most mammalian species).
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Bayesian approach, dispersal, microsatellite markers, Pantanal wetland, Tayassu pecari, Tayassuidae
Language
English
Citation
Journal of Mammalogy. Lawrence: Alliance Communications Group Division Allen Press, v. 92, n. 2, p. 267-274, 2011.
