• Evolution of polyandry by reduction in progeny number variance in structured populations

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    • Keywords


      Evolution of polyandry; multiple mating; structured demes; variance; reduction; sexual selection

    • Abstract


      When there is a variation in the quality of males in a population, multiple mating can lead to an increase in the genetic fitness of a female by reducing the variance of the progeny number. The extent of selective advantage obtainable by this process is investigated for a population subdivided into structured demes. It is seen that for a wide range of model parameters (deme size, distribution of male quality, local resource level), multiple mating leads to a considerable increase in the fitness. Frequency-dependent selection or a stable coexistence between polyandry and monandry can also result when the possible costs involved in multiple mating are taken into account.

    • Author Affiliations


      N. V. Joshi1

      1. Centre for Ecological Sciences, Indian Institute of Science, Bangalore - 560012, India
    • Dates

  • Journal of Genetics | News

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      Posted on July 25, 2019

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