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Assessing Differences in Sperm Competitive Ability in Drosophila
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SUCCESSFUL FATHERS SIRE SUCCESSFUL SONS.

N Wedell1, T Tregenza2

  • 1Population Biology Research Group, School of Biological Sciences, University of Liverpool, Liverpool, L69 3BX, United Kingdom.

Evolution; International Journal of Organic Evolution
|June 1, 2017
PubMed
Summary
This summary is machine-generated.

Sons of successful male field crickets achieve more matings than sons of unsuccessful males. This suggests heritable traits for mating success, but with longer development times as a potential cost.

Keywords:
CompetitionGryllus bimaculatusfemale choiceheritabilitymatingsexual selectiontrade-off

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Area of Science:

  • Evolutionary biology
  • Behavioral ecology
  • Sexual selection

Background:

  • Sexual selection theory posits that traits linked to reproductive success are heritable.
  • While indirect evidence abounds, direct proof of fathers' mating success predicting sons' success is scarce.

Purpose of the Study:

  • To experimentally investigate the heritability of mating success in male field crickets.
  • To determine if fathers' reproductive success influences their sons' mating success and phenotypes.

Main Methods:

  • An experimental study was conducted on male field crickets (Gryllus bimaculatus).
  • Mating success and offspring phenotypes were recorded and analyzed.

Main Results:

  • Sons of successful males achieved significantly more copulations than sons of unsuccessful males.
  • No significant difference in body size was observed between sons of successful and unsuccessful males.
  • Sons of successful males exhibited significantly longer development times.

Conclusions:

  • The study provides direct evidence for the heritability of mating success in field crickets.
  • Longer development times in sons of successful males may represent a trade-off, balancing sexually selected advantages with naturally selected costs.