Effects of imidacloprid and thiamethoxam at LC30 and LC50 on the life table of soybean aphid Aphis glycines (Hemiptera: Aphididae)
2021
The soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), is a main pests of soybean that poses a serious threat to its production. Studies were conducted to understand effects of the different concentrations of the insecticides (imidacloprid and thiamethoxam) on the life table of A. glycines to provide vital information for its effective management. We found that the mean generation time, adult and total pre-oviposition periods in A. glycines specimens exposed to LC 50 imidacloprid and thiamethoxam were significantly longer than those in the control group. However, when exposed to LC 30 imidacloprid and thiamethoxam, the adult pre-ovipositional period was significantly shorter than that in the control group. The mean fecundity per female adult, net reproductive rate, intrinsic rate of increase, and finite rate of increase were significantly decreased in individuals exposed to LC 30 and LC 50 concentrations of imidacloprid and thiamethoxam, respectively ( P
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