cryptoleamus montrouzieri is the most important natural enemy of pseudococcus citri. the effects of different temperatures and different densities of c. montrouzieri on predation rate, searching efficacy and mutual interference of the mentioned coccinellid feeding on the nymphs of p. citri was studied. hassel and varley model was applied for estimation of interference constant. according to the...

Based on the importance of using low-risk compounds to protect beneficial agents, present study evaluated acute toxicity lethal and sublethal concentrations insecticides thiacloprid, pyriproxyfen, chlorantraniliprole adults Aphelinus mali (Haldeman), main parasitoid woolly apple aphid, Eriosoma lanigerum (Hausmann). Similarly, acetamiprid, buprofezin, cyantraniliprole were Acerophagus flavidulu...

Recently, several invasive mealybugs (Hemiptera: Pseudococcidae) have rapidly spread to Asia and have become a serious threat to the production of cotton including transgenic cotton. Thus far, studies have mainly focused on the effects of mealybugs on non-transgenic cotton, without fully considering their effects on transgenic cotton and trophic interactions. Therefore, investigating the potent...

Mutual interference involves direct interactions between individuals of the same species that may alter their foraging success. Larvae of aphidophagous coccinellids typically stay within a patch during their lifetime, displaying remarkable aggregation to their prey. Thus, as larvae are exposed to each other, frequent encounters may affect their foraging success. A study was initiated in order t...

Predatory coccinellid, Cryptolaemus montrouzieri Mulsant is an important biological agent in citrus orchards. The effect of six treatments included: two types mineral oils, EC and mayonnaise at the concentration 15 ml/L, buprofezin 0.75 buprofezin+EC oil 0.5+5 insecticidal soap palizin 2.5 water as control were investigated on functional numerical responses C. under laboratory conditions. exper...