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Monte Carlo simulations of parapatric speciation

Author

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  • V. Schwämmle
  • A. O. Sousa
  • S. M. de Oliveira

Abstract

Parapatric speciation is studied using an individual-based model with sexual reproduction. We combine the theory of mutation accumulation for biological ageing with an environmental selection pressure that varies according to the individuals geographical positions and phenotypic traits. Fluctuations and genetic diversity of large populations are crucial ingredients to model the features of evolutionary branching and are intrinsic properties of the model. Its implementation on a spatial lattice gives interesting insights into the population dynamics of speciation on a geographical landscape and the disruptive selection that leads to the divergence of phenotypes. Our results suggest that assortative mating is not an obligatory ingredient to obtain speciation in large populations at low gene flow. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Suggested Citation

  • V. Schwämmle & A. O. Sousa & S. M. de Oliveira, 2006. "Monte Carlo simulations of parapatric speciation," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 51(4), pages 563-570, June.
    • Handle: RePEc:spr:eurphb:v:51:y:2006:i:4:p:563-570
    DOI: 10.1140/epjb/e2006-00251-5
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