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Between-sex Variation in Running Speed and a Potential Cost of Leg Autotomy in the Wolf Spider Pirata sedentarius
- Article from:
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The American Midland Naturalist
- Article date:
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July 1, 2005
- Author:
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;
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Copyright informationCopyright American Midland Naturalist Jul 2005. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT.-
Leg autotomy in spiders is a relatively common occurrence, usually resulting from agonistic interactions with predators or conspecifics. While autotomy has immediate benefits, due to enhanced survival probability, it also potentially decreases future fitness. One possible cost of losing a leg is a reduction in burst running speed, which may affect prey capture and predator avoidance behaviors in wandering spiders. We examined sprint speed in intact and autotomized males and females of the wolf spider Pirata sedentarius from two stream banks in New York in an effort to determine if the sexes differed in either sprint speed or the potential cost of leg loss. Autotomy was fairly ...
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