Sublethal effects of anthranilic diamide insecticides on the demographic fitness and consumption rates of the Coccinella septempunctata (Coleoptera: Coccinellidae) fed on Aphis craccivora

As for developing effective integrated pest management (IPM), it is necessary to understand the sublethal effects of common insecticides on the non-target beneficial arthropods. In this lab-scale study, the sublethal effects of two anthranilic diamide insecticides chlorantraniliprole and cyantraniliprole on the populations of 7-spot ladybird Coccinella septempunctata (Coleoptera: Coccinellidae) were determined and compared using an age-stage, TWO-SEX life table and CONSUME-MSChart computer program. Cyantraniliprole at low-lethal concentrations of 1 and 10 mg L −1 significantly prolonged the larval stages and reduced the total adult longevity, compared with the control. Additionally, the net reproductive rate ( R 0 ), intrinsic rate of increase ( r ), finite rate of increase ( λ ), and mean generation time ( T ) were significantly reduced in the group treated with 10 mg L −1 of cyantraniliprole. Similarly, the net predation ( C 0 ), the finite predation rate ( ω ), and stable predation rate ( ψ ) were significantly reduced by cyantraniliprole at 1 and 10 mg L −1 . In contrast, no significant difference in the demographic parameters above was determined for chlorantraniliprole at 1 mg L −1 . Therefore, C. septempunctata population may develop faster and possess greater predation potential against aphids under the exposure of chlorantraniliprole, compared to cyantraniliprole. Chlorantraniliprole may be a preference to cyantraniliprole as a combined alternative with ladybeetle predators in IPM framework.