Comparative Genetic Diversity of Wild and Captive Populations of the Bare-Faced Curassow (Crax fasciolata) Based on Cross-Species Microsatellite Markers: Implications for Conservation and Management

The bare-faced curassow (Crax fasciolata) is a large Neotropical bird that suffers anthropogenic pressure across much of its range. A captive population is maintained for conservation management, although there has been no genetic screening of stocks. Based on the six microsatellite markers develope...

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Bibliographic Details
Published in:Biochemical genetics 2010-06, Vol.48 (5-6), p.472-479
Main Authors: Gonçalves, Evonnildo C, Ferrari, Stephen F, Bastos, Heitor B, Wajntal, Anita, Aleixo, Alexandre, Schneider, Maria Paula C
Format: Article
Language:English
Subjects:
Animals
Anthropogenic factors
Bare-faced curassow
Biochemistry
Biomedical and Life Sciences
Biomedicine
Conservation
Conservation of Natural Resources
Crax fasciolata
Endangered Species
Galliformes - genetics
Gene Frequency
Genetic diversity
Genetic drift
Genetic screening
Genetic Variation
Human Genetics
Medical Microbiology
microsatellite repeats
Microsatellite Repeats - genetics
Polymorphism, Genetic
population genetics
Species diversity
Zoology
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Summary:The bare-faced curassow (Crax fasciolata) is a large Neotropical bird that suffers anthropogenic pressure across much of its range. A captive population is maintained for conservation management, although there has been no genetic screening of stocks. Based on the six microsatellite markers developed for Crax globulosa, the genetic variability of C. fasciolata and possible differences between a wild and a captive population were investigated. Only three loci were polymorphic, with a total of 27 alleles. More than half of these alleles were private to the wild (n = 8) or captive (n = 7) populations. Significant deviations from Hardy-Weinberg equilibrium were restricted to the captive population. Despite the number of private alleles, genetic drift has probably promoted differentiation between populations. Our results indicate that wild C. fasciolata populations are genetically impoverished and structured, but species-specific microsatellite markers will be necessary for a more reliable assessment of the species' genetic diversity.
ISSN:0006-2928
1573-4927
DOI:10.1007/s10528-010-9330-7