Effects of chlorogenic acid-and tomatine-fed caterpillars on the behavior of an insect predator |
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Authors: | Matthew S. Traugott Nancy E. Stamp |
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Affiliation: | (1) Department of Biological Sciences, Binghamton University, State University of New York, Box 6000, 13902-6000 Binghamton, New York |
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Abstract: | If generalist insect predators are a selective force contributing to patterns of feeding specialization by insect herbivores, then predators should be deterred from eating allelochemical-fed prey. The attack and feeding behaviors of naive predators (Podisus maculiventris stinkbugs) reared on control caterpillars (Manduca sexta) fed plain diet were compared to experienced predators reared on caterpillars fed tomato allelochemicals. Tomatine-fed prey were found more quickly by both naive and tomatine-experienced predators, and chlorogenic acid-experienced predators were more stimulated to begin searching for prey. However, experienced predators were less likely to attack both chlorogenic acidfed and tomatine-fed caterpillars than were naive predators. These results indicate that allelochemical-fed prey were easier for predators to locate, but allelochemical-containing prey often deterred predation by experienced predtors. |
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Keywords: | allelochemicals Podisus maculiventris Manduca sexta generalist predator specialist herbivore insect learning |
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