The Toxic Effect of Greenhouse Insecticides on the Predatory Bugs Nesidiocoris tenuis Reuter and Macrolophus pygmaeus H.-S. (Heteroptera, Miridae)

摘要

The study reports the results of toxicity tests for several insecticides which are allowed to be used on greenhouse plants (Admiral, Mospilan, Spintor, and BT), as applied to different developmental stages of the predatory bugs Nesidiocoris tenuis Reuter and Macrolophus pygmaeus H.-S. (family Miridae), which feed on whiteflies, aphids, thrips, and spider mites. The juvenoid Admiral is found to be the least toxic to these species, whereas the spinosyn Spintor is most toxic. The neonicotinoid Mospilanand a microbiological insecticide BT are intermediate in their effects. The timing of application of insecticides most favorable to the predatory mirids when both pest management methods are used together is discussed.