Female hunger can explain variation in cannibalistic behavior despite male sacrifice in redback spiders

@article{Andrade1998FemaleHC,
  title={Female hunger can explain variation in cannibalistic behavior despite male sacrifice in redback spiders},
  author={Maydianne C. B. Andrade},
  journal={Behavioral Ecology},
  year={1998},
  volume={9},
  pages={33-42}
}
  • M. Andrade
  • Published 1998
  • Psychology, Biology
  • Behavioral Ecology
Male Australian redback spiders (Latrodtctus hassetti ThorelL Tberidiidae) place their abdomens directly over their mate's mouthparts during copulation, increasing the likelihood of sexual cannibalism. Male sacrifice may be adaptive because cannibalized males increase their paternity relative to those that are not eaten. Despite male sacrifice behavior, however, up to 50% of laboratory matings may end without sexual ranni^alinn Here, I report a similar pattern in the field, where males were not… 
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References

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TLDR
It is concluded that male somersaults and female cannibalistic behaviour in L. hasselti are genetically programmed events.
Sexual Cannibalism in Orb-Weaving Spiders: An Economic Model
TLDR
The model demonstrates that cannibalism of courting males by virgin females can arise purely through foraging considerations and that the most important factors for the evolution of this behavior are the expected number of males encountered during the season and the distribution of mass gained from other prey items.
Sexual Selection for Male Sacrifice in the Australian Redback Spider
TLDR
Results represent empirical evidence for male copulatory suicide as an adaptive behavior in redback spiders and show that cannibalized males copulated longer and fertilized more eggs than those that survived copulation.
Sexual cannibalism in the garden spider Araneus diadematus
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TLDR
Phenomena selecting for sexual cannibalism appear more closely related to paternal investment strategies than to ecological factors associated with other forms of cannibalism, and specific field observations are suggested which would provide quantitative estimates of the expected number of male matings.
BEHAVIOR AND ECOLOGY OF MATING IN TH E CANNIBALISTIC SCORPION, PAR UROCTONUS MESAENSI S STAHNKE (SCORPIONIDA : VAEJOVIDAE )
During the seasonal mating period, mature males undergo alteration in behavior and ecology ; the y are more vagrant and feed less than all other components of the population . Cannibalism of mature
Sexual cannibalism in the praying mantid, Mantis religiosa: a field study
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TLDR
It is hypothesize that female preference for greater male parental investment may have been the selective context for the evolution of all types of male investment patterns in insects.
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TLDR
Comparison of weights and body dimensions of individuals from field populations with those of known nutritional status showed that lack of food is a problem for field populations of both species, suggesting that starved individuals have the capacity to double their body weight through ingestion of large amounts of food when available.
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