Sublethal effects of flupyradifurone insecticide on the life table parameters of the mustard aphid, Lipaphis erysimi (Kalt)

Canola is cultivated as an oil seed plant all over around the world. The mustard aphid, Lipaphiserysimi (Kalt.) (Hem.: Aphididae) is one of the most important canola pests. In this study, the lethal and sublethal effects of flupyradifurone were evaluated on biological characteristics and life table parameters of the mustard aphid. The experiments were carried out at 20±2oC, 65±5% RH and 16L: 8D photoperiods. The life table parameters of L. erysimi were calculated using Carey's life table method. The LC50, LC25, and LC10 values of the flupyradifurone insecticidewere 0.385, 0.093, and 0.026 mg/L, respectively. The intrinsic rate of increase (r= 0.34, 0.30, and 0.23 Female/female/day), finite rate of increase (λ= 1.41, 1.36, and 1.27 Female/female/day), mean generation time(T= 10.84, 9.98, and 9.00 d) and doubling time (DT= 0.49, 0.50, and 0.54 d) were calculated in control, LC10, and LC25 treatments, respectively. The highest rates of reproduction and population growth rates of the mustard aphid, L. erysimi population were related to control, LC10, and LC25 treatments, respectively. Experiments showed that the sublethal effects of flupyradifurone significantly reduced gross rate reproduction,intrinsic rate of increase, finite rate of increase and mean generation time and increased doubling time of mustard aphid. Therefore, according to the results of this study, the insecticide flupyradifurone has a good potential in controlling mustard aphids in lethal and sub-lethal concentrations.