Olfactory Response of the Predatory Bug Orius laevigatus (Hemiptera:Anthocoridae) to the Aggregation Pheromone of Its Prey, Frankliniella occidentalis (Thysanoptera: Thripidae).

摘要: Herbivore natural enemies base their foraging decision on information cues from different trophic levels but mainly plant odors. However, the second level (i.e., herbivorous prey) may also provide reliable infochemical for enemies. We have evaluated role of aggregation pheromone Frankliniella occidentalis (Pergande) as a potential kairomone its enemy, predatory bug Orius laevigatus (Fieber). For this purpose, we analyzed response O. to (R)-lavandulyl acetate and neryl (S)-2-methylbutanoate, two major components thrips pheromone. These compounds been offered adult females nymphs bugs both in separate specific (1:1 or 1:2.3) blends, experiments involving dual choice Y-tube olfactometer. None attracted adults when they were individually supplied. Conversely, significantly blend. A 1:2.3 acetate:neryl (S)-2-methylbutanoate blend was attractive adults, while 1:1 elicited only nymphs. results suggest that blends these be used an attractant laevigatus. The work highlight importance studying olfactory responses better understanding behavior. Potential uses future studies are discussed.