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9 April 2019 The Impact of Scavenging Versus Predation on Weight Change and Survival of the Brown Recluse Spider Loxosceles reclusa (Araneae: Sicariidae)
Robert Ewing, Holly N. Davis, Breta L. Alstrom, Chloe E. Albin, R. Jeff Whitworth
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Abstract

Studies were conducted to determine if predation versus scavenging versus scavenging on insecticide-killed prey affected brown recluse spiders, Loxosceles reclusa. Indicators of possible effects were measured by weight change and survival. Live house crickets, Acheta domesticus, used as prey, were exposed to one of four treatments: live (untreated control), Spinosad or pyrethroid insecticide treated surface, or freeze-killed (scavenging control) and made available to spiders for twenty-four hours once/week for eight weeks. Spiders fed pyrethroid-killed crickets had significantly lower survival than did spiders utilizing crickets exposed to all other treatments. L. reclusa had significantly greater weight gain feeding as predators than as scavengers.

© 2018 Kansas Entomological Society
Robert Ewing, Holly N. Davis, Breta L. Alstrom, Chloe E. Albin, and R. Jeff Whitworth "The Impact of Scavenging Versus Predation on Weight Change and Survival of the Brown Recluse Spider Loxosceles reclusa (Araneae: Sicariidae)," Journal of the Kansas Entomological Society 91(2), 101-109, (9 April 2019). https://doi.org/10.2317/0022-8567-91.2.101
Received: 1 February 2018; Accepted: 28 October 2018; Published: 9 April 2019
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