Influence of some Insecticides on the Biological Attributes of Orius albidipennis (Reuter) (Hemiptera: Anthocoridae)

Abstract

Effect of direct application of five bio-and conventional insecticides Dipel2x, Radiant, Proclaim, Aphox and Coragen) at three different concentrations on the biological attributes of immature (1 st , 3 rd and 5 th nymphal instars) and adult stages of Orius albidipennis (Reuter) (Hemiptera: Anthocoridae) were evaluated. Procalim, Aphox and Coragen had harmful effect and caused significant reduction in the tested stages of O. albidipennisas compared to Dipel 2x and Radiant insecticides, irrespective of tested concentrations. Also, the direct impact of those insecticides on immature stages was higher than that recorded for adult stage. Insecticide-treated immature stages of O. albidipennis had negative impact on developmental periods. However, the longevity, fecundity rates and hatchability percentages of obtained adults from insecticide-treated immature and insecticide-treated adult stages were differed from those of untreated (control).