Sex ratios when helpers stay at the nest.

  title={Sex ratios when helpers stay at the nest.},
  author={Geoff Wild},
  journal={Evolution; international journal of organic evolution},
  volume={60 10},
  • Geoff Wild
  • Published 2006 in
    Evolution; international journal of organic…
This study investigates the evolution of the sex ratio (parental investment in sons) when breeding adults are supported by help provided by nonbreeding individuals of one sex. The study also assumes that the helping sex remains on its natal site to compete for the opportunity to breed, whereas the nonhelping sex disperses. Two kin-selection models are presented, both of which incorporate the age structure found in many natural populations where such helping occurs. The first model assumes that… CONTINUE READING

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