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Understanding mating systems: A mathematical model of the pair formation process

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  • Lee, Aline Magdalena
  • Engen, Steinar
  • Sæther, Bernt-Erik

Abstract

Mechanisms generating inequalities among males in reproductive success are key to understanding the evolutionary significance of sexual selection. This paper develops a stochastic model to quantitatively describe and analyze mating systems on a continuous scale from strict monogamy to extreme polygyny. The variance in male mating success is shown to increase with increased differences among males, with decreased interdependence of mating events, with increased population size, and with an increased number of females per male. The latter condition decreases the opportunity for sexual selection. It is found that different combinations of mating system characteristics can lead to the same variance in male mating success, although the distribution differs. This emphasizes the importance of using a model of this type to study mating systems, rather than relying solely on the variance in reproductive success as a descriptor of different systems.

Suggested Citation

  • Lee, Aline Magdalena & Engen, Steinar & Sæther, Bernt-Erik, 2008. "Understanding mating systems: A mathematical model of the pair formation process," Theoretical Population Biology, Elsevier, vol. 73(1), pages 112-124.
    • Handle: RePEc:eee:thpobi:v:73:y:2008:i:1:p:112-124
    DOI: 10.1016/j.tpb.2007.09.003
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    References listed on IDEAS

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    1. Leah G. Domb & Mark Pagel, 2001. "Sexual swellings advertise female quality in wild baboons," Nature, Nature, vol. 410(6825), pages 204-206, March.
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    Cited by:

    1. Alexander Sinelnikov, 2017. "Demographics in the “Marriage Market†of the Sverdlovsk Region," Economy of region, Centre for Economic Security, Institute of Economics of Ural Branch of Russian Academy of Sciences, vol. 1(4), pages 1164-1174.

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