Courtship feeding in katydids benefits the mating male's offspring

@article{Gwynne1988CourtshipFI,
  title={Courtship feeding in katydids benefits the mating male's offspring},
  author={Darryl T. Gwynne},
  journal={Behavioral Ecology and Sociobiology},
  year={1988},
  volume={23},
  pages={373-377}
}
  • D. Gwynne
  • Published 1 December 1988
  • Biology
  • Behavioral Ecology and Sociobiology
SummaryFor species exhibiting courtship feeding it is typically argued that the food gift presented by males is a sexually-selected trait in serving to acquire fertilizations. An alternative hypothesis is that the trait is maintained by natural selection for parental investment in which the fitness of the mating male's offspring is increased. Here I argue that the spermatophylax, a nutritious part of the spermatophore provided to female katydids, Requena verticalis, functions mainly as parental… 

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Sexual conflict over nuptial gifts in insects.

  • D. Gwynne
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    Annual review of entomology
  • 2008
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...

References

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The hypothesis that the function of "excess" maledonated nutrition is mating effort that protects the ejaculate is rejected and courtship feeding in R. verticalis may represent parental effort whereby males invest in their own zygotes.

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Sexual selection and its consequences at different sites are examined by testing the prediction that sexual selection on females, as estimated by variance in mating success, should be greater at sites where sexual competition among females is observed and detailing the differences in courtship behavior between sites that have apparently resulted from differences in sexual selection.

Paternal care

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  • D. Gwynne
  • Biology, Environmental Science
    Behavioral Ecology and Sociobiology
  • 2004
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  • D. Gwynne
  • Biology
    Evolution; international journal of organic evolution
  • 1988
Katydid males (Requena verticalis) produce spermatophores with a large sperm‐free sperMatophylax, which is eaten by the female after mating, and this male‐produced food substitute for other food in the diet of the female or is it a source of specialized nutrients.

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  • Biology
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