spagedi: a versatile computer program to analyse spatial genetic structure at the individual or population levels

Authors

  • Olivier J. Hardy,

    Corresponding author
    1. Laboratoire de Génétique et Ecologie végétales, Université Libre de Bruxelles, 1850 chaussée de Wavre, B-1160 Bruxelles, Belgium
      Olivier Hardy. Fax: + 32 2650 91 70; E-mail: ohardy@ulb.ac.be
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  • Xavier Vekemans

    1. Laboratoire de Génétique et Ecologie végétales, Université Libre de Bruxelles, 1850 chaussée de Wavre, B-1160 Bruxelles, Belgium
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Olivier Hardy. Fax: + 32 2650 91 70; E-mail: ohardy@ulb.ac.be

Abstract

spag e d i version 1.0 is a software primarily designed to characterize the spatial genetic structure of mapped individuals or populations using genotype data of codominant markers. It computes various statistics describing genetic relatedness or differentiation between individuals or populations by pairwise comparisons and tests their significance by appropriate numerical resampling. spag e d i is useful for: (i) detecting isolation by distance within or among populations and estimating gene dispersal parameters; (ii) assessing genetic relatedness between individuals and its actual variance, a parameter of interest for marker based inferences of quantitative inheritance; (iii) assessing genetic differentiation among populations, including the case of haploids or autopolyploids.

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