Genetica

, Volume 128, Issue 1, pp 323–332

RAPD variation and population genetic structure of Physalaemus cuvieri (Anura: Leptodactylidae) in Central Brazil

  • Mariana Pires Campos de Telles
  • Rogério Pereira Bastos
  • Thannya Nascimento Soares
  • Lucileide Vilela Resende
  • José Alexandre Felizola Diniz-Filho
Article

DOI: 10.1007/s10709-006-6971-x

Cite this article as:
de Telles, M.P.C., Bastos, R.P., Soares, T.N. et al. Genetica (2006) 128: 323. doi:10.1007/s10709-006-6971-x
  • 103 Downloads

Abstract

Studies about the organization of the genetic variability and population structure in natural populations are used either to understand microevolutionary processes or the effects of isolation by human-inducted landscape modifications. In this paper, we analyzed patterns of genetic population structure using 126 RAPD loci scored for 214 individuals of Physalaemus cuvieri, sampled from 18 local populations. Around 97% of these loci were polymorphic. The among-population variation component (ΦST) obtained by AMOVA was equal to 0.101 and θB obtained using a Bayesian approach for dominant markers was 0.103. Genetic divergence, analyzed by Mantel spatial correlogram, revealed only a short-distance significant correlation between genetic and geographic distances. This is expected if low levels of population differentiation, due to high abundance buffering the effect of stochastic processes, are combined with low spatially restricted gene flow. Although this may be consistent with the current knowledge of species’ biology, the spatial distribution of local populations observed in this study also suggest that, at least in part, recent human occupation and habitat fragmentation may also explain part of the interpopulational component of the genetic variation.

Keywords

AMOVA anurans Bayesian models Mantel test Physalaemus population structure RAPD spatial autocorrelation 

Copyright information

© Springer 2006

Authors and Affiliations

  • Mariana Pires Campos de Telles
    • 1
  • Rogério Pereira Bastos
    • 2
  • Thannya Nascimento Soares
    • 3
  • Lucileide Vilela Resende
    • 3
  • José Alexandre Felizola Diniz-Filho
    • 2
    • 4
  1. 1.Departamento de ZootecniaUniversidade Católica de Goiás (UCG)GoiâniaBrasil
  2. 2.Departamento de Biologia Geral, ICBUniversidade Federal de GoiásGoiâniaBrasil
  3. 3.Laboratório de Genética e Melhoramento ITS-ZootecniaUniversidade Católica de GoiásGoiâniaBrasil
  4. 4.Mestrado em Ciências Ambientais e Saúde, MCAS Departamento de BiologiaUniversidade Católica de GoiásGoiâniaBrasil

Personalised recommendations