Mite predator responses to prey and predator-emitted stimuli |
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Authors: | Robert G Hislop Ronald J Prokopy |
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Affiliation: | (1) Department of Entomology, University of Massachusetts, 01003 Amherst, Massachusetts |
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Abstract: | We found that the searching behavior of two acarine predators,Amblyseius fallacis andPhytoseiulus macropilis, for prey,Tetranychus urticae, is affected by the following stimuli: (1) prey silk and associated feces, whose combined physical and chemical properties elicit reduction in the rate of predator movements and longer halts; (2) kairomone extracted from prey silk and associated feces, which, upon contact, elicits frequent predator return to prey-inhabited locales; and (3) predator-emitted marking pheromone, which elicits shorter duration of search in presearched prey locales. We also found that treatment of filter paper with prey kairomone or silk enhanced predator location of prey eggs, leading us to speculate that application of synthetic prey kairomone could be useful in pest management programs. |
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Keywords: | Kairomone silk marking pheromone host finding Amblyseius fallacis Phytoseiulus macropilis Tetranychus urticae |
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