The effects of three insecticides including deltamethrin, spirotetramat and flupyradifurone on pre-imaginal stages of Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae) were investigated using dipping method. The mean emergence rate of T. evanescens when exposed to the recommended field concentrations of deltamethrin, spirotetramat and flupyradifurone were 62.8, 84 and 86.1%, respectively while 94.3% of the wasps emerged in the control group. According to the concentration–response experiments, the LC₅₀ values of deltamethrin, spirotetramat and flupyradifurone were 262.9, 274.8 and 334.8 ppm, respectively. The results indicated that lethal (LC₅₀) and sublethal (LC₃₀) concentrations of three tested insecticides significantly reduced the fecundity and longevity of T. evanescens. However, LC₃₀ of spirotetramat and flupyradifurone didn’t influence the oviposition duration of the wasps when compared with the control group. The gross reproductive rate (GRR), intrinsic rates of increases (r), net reproductive rate (R₀), and finite rate of increase (λ) were significantly lower in all the treated wasps in comparison with control. However, the mean generation time (T) was not affected by the sublethal concentrations of tested insecticides. According to our findings, all insecticidal treatments have adverse effects on the population of T. evanescens, notwithstanding sublethal concentration of flupyradifurone followed by spirotetramat were more compatible with adults T. evanescens in comparison with deltamethrin. However, further studies under the field conditions are required to confirm the results.

的三种杀虫剂包括溴氰菊酯，螺虫乙酯和flupyradifurone上的预成虫阶段的影响赤眼蜂广赤眼蜂Westwood的：使用浸渍法（膜翅目赤眼蜂科）进行了调查。的平均出苗率T.广赤眼蜂当暴露于溴氰菊酯，螺虫乙酯和flupyradifurone的建议字段浓度分别为62.8，84和86.1％，分别而蜂94.3％的对照组中出现了。根据浓度-响应实验，溴氰菊酯，螺四溴甲烷和氟吡呋酮的LC ₅₀值分别为262.9、274.8和334.8 ppm。结果表明，致死性（LC ₅₀）和亚致死性（LC ₃₀）三种测试的杀虫剂的浓度显着降低了T. evanescens的繁殖力和寿命。但是，与对照组相比，螺旋四氮芥和氟吡呋酮的LC ₃₀不会影响黄蜂的产卵持续时间。与对照相比，所有处理过的黄蜂的总生殖率（GRR），内在增长率（r），净生殖率（R ₀）和有限增长率（λ）均显着降低。但是，平均产生时间（T）不受所测杀虫剂亚致死浓度的影响。根据我们的发现，所有杀虫剂处理均会对棉铃虫种群造成不利影响。T.广赤眼蜂，尽管flupyradifurone随后螺虫乙酯的亚致死浓度分别为与成人更相容T.广赤眼蜂与溴氰菊酯比较。但是，需要在野外条件下进行进一步研究以确认结果。