Lethal and sublethal effects of lambda-cyhalothrin on Aphis fabae (Scopoli, 1763), Myzus persicae (Sulzer, 1776) and Acyrthosiphon pisum (Harris, 1776) (Hemiptera: Aphididae)

Abstract

In this study, sublethal doses of lambda-cyhalothrin to the species Aphis fabae (Scopoli, 1763), Myzus persicae (Sulzer, 1776) and Acyrthosiphon pisum (Harris, 1776) (Hemiptera: Aphididae) were determined, and the effects of these doses on the life cycles of the species were revealed and evaluated. The lethal effects of different concentrations (0.3125, 0.625, 1.25, 2.5, 5, 10 and 20 µL L-1) prepared by distillated water of lambda-cyhalothrin on the species were determined according to Abbott. Based on the results obtained, the effects of LC30 and LC40 concentrations of the insecticide on the life cycles of the species were determined. The insecticide caused different mortality rates in the species. The sublethal concentrations of the insecticide were found to be effective for the life cycles of the species. In all three species, intrinsic rate of increase (rm), net reproduction rate (R0) and gross reproduction rate (GRR) values were found to decrease when insecticide was applied. The results will provide guidance to researchers working in this specific field. However, it would be beneficial to replicate this study under field conditions to obtain clear information.