Sexual Cannibalism in Orb-Weaving Spiders: An Economic Model

  title={Sexual Cannibalism in Orb-Weaving Spiders: An Economic Model},
  author={J. Newman and M. Elgar},
  journal={The American Naturalist},
  pages={1372 - 1395}
  • J. Newman, M. Elgar
  • Published 1991
  • Biology
  • The American Naturalist
  • Sexual cannibalism in orb-weaving spiders commonly takes place before copulation, even among virgin females. This behavior is curious because, although the female may obtain a nutritious meal, she risks remaining unmated. We present an economic model that accounts for sexual cannibalism by virgin females using stochastic dynamic programming. The model considers a female's expected reproductive output (which is a function of the number of copulations she has achieved) and her body size, both of… CONTINUE READING
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