Genetic differentiation over a short water barrier in the Brazilian tanager, Ramphocelus bresilius (Passeriformes: Thraupidae) an endemic species of the Atlantic forest, Brazil

Atlantic forest is a biome of high diversity that is increasingly under threat from habitat clearance. This habitat contains a large number of endemic species, many of which are currently endangered. Here, we consider the genetic population structure of a Brazilian endemic bird restricted to Atlanti...

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Bibliographic Details
Published in:Conservation genetics 2014-10, Vol.15 (5), p.1151-1162
Main Authors: Nogueira, Denise M, Pope, Lisa C, Burke, Terry, Alves, Maria Alice S
Format: Article
Language:English
Subjects:
Animal Genetics and Genomics
Biodiversity
Biomedical and Life Sciences
Birds
conservation areas
Conservation Biology/Ecology
Ecology
ecosystems
Endangered species
Endemic species
Evolutionary Biology
Forests
gene flow
Genetic diversity
genetic variation
Habitats
indigenous species
Life Sciences
loci
microsatellite repeats
Passeriformes
planning
Plant Genetics and Genomics
Population structure
Research Article
Thraupidae
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Summary:Atlantic forest is a biome of high diversity that is increasingly under threat from habitat clearance. This habitat contains a large number of endemic species, many of which are currently endangered. Here, we consider the genetic population structure of a Brazilian endemic bird restricted to Atlantic forest, the Brazilian tanager, Ramphocelus bresilius. While currently not threatened, this narrow range endemic faces future habitat reductions, potentially serving as a model species for other birds reliant on this biome. We sampled six populations, three on the mainland (Rio de Janeiro state), and three on a neighbouring continental island (Ilha Grande), to compare the genetic diversity and population structure in these two regions. Using microsatellite data from eight loci generated for 177 individuals, we found that the short ocean crossing significantly restricted gene flow (20–150 km between populations, FCT = 0.057 P 
ISSN:1566-0621
1572-9737
DOI:10.1007/s10592-014-0607-y