Genetic structure in a tropical lek-breeding bird, the blue manakin (Chiroxiphia caudata) in the Brazilian Atlantic Forest

Determining the genetic structure of tropical bird populations is important for assessing potential genetic effects of future habitat fragmentation and for testing hypotheses about evolutionary mechanisms promoting diversification. Here we used 10 microsatellite DNA loci to describe levels of geneti...

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Bibliographic Details
Published in:Molecular ecology 2007-12, Vol.16 (23), p.4908-4918
Main Authors: FRANCISCO, MERCIVAL R, GIBBS, H. LISLE, GALETTI, MAURO, LUNARDI, VITOR O, JUNIOR, PEDRO M. GALETTI
Format: Article
Language:English
Subjects:
Animals
Biogeography
Birds
Brazil
Breeding
Ecology
effective population size
Female
Gene Flow
Genetic Variation
Genetics, Population
Genotype
Geography
Habitats
Male
microsatellite DNA
Microsatellite Repeats - genetics
Molecular biology
Neotropical passerine birds
Passeriformes - genetics
Pipridae
Population genetics
Trees
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Summary:Determining the genetic structure of tropical bird populations is important for assessing potential genetic effects of future habitat fragmentation and for testing hypotheses about evolutionary mechanisms promoting diversification. Here we used 10 microsatellite DNA loci to describe levels of genetic differentiation for five populations of the lek-mating blue manakin (Chiroxiphia caudata), sampled along a 414-km transect within the largest remaining continuous tract of the highly endangered Atlantic Forest habitat in southeast Brazil. We found small but significant levels of differentiation between most populations. FST values varied from 0.0 to 0.023 (overall FST = 0.012) that conformed to a strong isolation by distance relationship, suggesting that observed levels of differentiation are a result of migration-drift equilibrium. Nem values estimated using a coalescent-based method were small (
ISSN:0962-1083
1365-294X
DOI:10.1111/j.1365-294X.2007.03519.x