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Male spiders reduce pre- and postmating sexual investment in response to sperm competition risk

Author

Listed:
  • Cristina Tuni
  • Sabrina Weber
  • Trine Bilde
  • Gabriele Uhl

Abstract

Lay SummaryIn response to competition, males should invest in premating traits (i.e., courtship) to enhance their mating success or in postmating traits (i.e., sperm) to increase fertilization success. We show instead that in the presence of a rival, spiders courting females with food gifts reduce both, investment in gifts and sperm. In competitive environments, accessing more females through low-quality gifts rather than allocating large amounts of sperm to each mating may confer highest fitness rewards.

Suggested Citation

  • Cristina Tuni & Sabrina Weber & Trine Bilde & Gabriele Uhl, 2017. "Male spiders reduce pre- and postmating sexual investment in response to sperm competition risk," Behavioral Ecology, International Society for Behavioral Ecology, vol. 28(4), pages 1030-1036.
    • Handle: RePEc:oup:beheco:v:28:y:2017:i:4:p:1030-1036.
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    File URL: http://hdl.handle.net/10.1093/beheco/arx061
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