The green lacewing, Chrysoperla carnea (Stephens) is considered one of
the most effective predators with commercial viability for usage in many
agricultural systems against a variety of crop pests. Results showed that after 24
h of exposure the LC 50 values for chlorpyrifos, lambada-cyhalothrin, abamectin,
acetamiprid, lufenoron (72h) and methomyl were 0.201,4.66, 25.86,71.54,258.93
and 388.37 mgL -1
, respectively. Chlorpyrifos was the most toxic among the
pesticides studied. In consideration of the developmental time of the 2 nd instar
larvae treated with sublethal concentration (LC10) revealed a significant
difference between treats of all tested pesticides compared to untreated control.
Plus, no significant difference was observed among lambada-cyhalothrin,
abamectin, acetamiprid, and lufenuron treatments considering the larval
developmental time. The developmental time of the 3 rd instars larvae treated with
chlorpyrifos, lufenuron, and acetamiprid were not significant compared to the
control treatment. For the pupae's developing time, the differences between
treatments and controls were significant. The mean numbers of eggs of C.
cephalonicus and Aphis craccivora Koch consumed by C. carnea 2 nd and 3 rd
instar larvae significantly decreased after exposure of sublethal concentration of
the selected insecticides compared to the control. In accordance with the results
obtained, abamectin, lambada-cyhalothrin and lufenuron might be incorporated
into integrated pest management (IPM) programs in combination with C. carnea
for the control of sucking insect pests. Further, the use of chlorpyrifos, methomyl
and acetamiprid in IPM strategies should be taken into consideration when
releasing the green lacewing, due to the toxic effects observed under laboratory
conditions.