Attraction of a generalist predator towards herbivore‐infested plants

摘要: The occurrence and strength of interactions among natural enemies herbivores depend on their foraging decisions, several these decisions are based odours. To investigate arthropods in a greenhouse cropping system, we studied the behavioural response predatory bug Orius laevigatus (Fieber) (Hemiptera: Anthocoridae) towards cucumber plants infested either with thrips (Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)) or spider mites (Tetranychus urticae Koch (Acari: Tetranychidae)). In release-recapture experiments, showed significant preference for both thrips-infested mite-infested over clean plants. Predatory bugs preferred to thrips. Experience leaves prior release had no effect bugs. However, this experience did increase percentage predators recaptured. Y-tube olfactometer experiments that O. was more attracted odours from than Thus, is able perceive may use them find prey conditions. consequences searching behaviour pest control discussed.