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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

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Abstract

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.

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Acknowledgments

This study was part of the Brazilian Environment Ministry’s PROBIO initiative, financed by BIRD and CNPq. CNPq also supported individual authors through grants 152757/2007-4 (ECG), 302747/2008-7 (SFF), and 476212/2007-3 (AA). We are grateful to Silvanira Barbosa for her support in the laboratory and to an anonymous reviewer for comments on the original manuscript.

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Authors and Affiliations

  1. Laboratório de Polimorfismo de DNA, Universidade Federal do Pará, Caixa Postal 8607, 66.065-970, Belem, Para, Brazil

    Evonnildo C. Gonçalves, Heitor B. Bastos & Maria Paula C. Schneider

  2. Departamento de Biologia, Universidade Federal de Sergipe, Sao Cristovao, Sergipe, Brazil

    Stephen F. Ferrari

  3. Departamento de Genética e Biologia Evolutiva, Universidade de São Paulo, Sao Paulo, Brazil

    Anita Wajntal

  4. Coordenação de Zoologia, Museu Paraense Emílio Goeldi, Caixa Postal 399, 66.040-170, Belem, Para, Brazil

    Alexandre Aleixo

Authors
  1. Evonnildo C. Gonçalves
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  2. Stephen F. Ferrari
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  3. Heitor B. Bastos
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  4. Anita Wajntal
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  5. Alexandre Aleixo
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  6. Maria Paula C. Schneider
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Correspondence to Evonnildo C. Gonçalves.

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Gonçalves, E.C., Ferrari, S.F., Bastos, H.B. et al. 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. Biochem Genet 48, 472–479 (2010). https://doi.org/10.1007/s10528-010-9330-7

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  • DOI: https://doi.org/10.1007/s10528-010-9330-7

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