Li Wenbo, Naeem Muhammad, Cui Juan, Du Guochuan, Chen Huanhuan
College of Biological Resource and Food Engineering, Qujing Normal University, Qujing 655011, China.
College of Agriculture, Jilin Agriculture Science and Technology College, Jilin 132101, China.
Insects. 2025 Mar 3;16(3):259. doi: 10.3390/insects16030259.
Lambda-cyhalothrin is a synthetic pyrethroid insecticide that is widely used to control leaf-eating pests. Because of increased insecticide resistance, an understanding of sublethal cross-generational effects of insecticides is important. We examine the effects of sublethal concentrations (SLCs) (LC, LC, and LC) of lambda-cyhalothrin on the growth, reproduction, and detoxification enzyme activities of F and F generation . Lambda-cyhalothrin is toxic to adult , with an LC at 48 h of 0.355 mg L. At SLCs, lambda-cyhalothrin significantly reduces the longevity and average fecundity of F and F adults, and prolongs the durations of the egg, larval, and pupal stages and adult preoviposition period. Additionally, an increased lambda-cyhalothrin concentration significantly decreases net reproductive rates, and both finite and intrinsic rates of increase in the F generation, and significantly increases the average generation cycle. The detoxification enzyme activity of F adults treated with SLCs of lambda-cyhalothrin for 48 h trends upwards. Results indicate that low concentrations of lambda-cyhalothrin induce glutathione S-transferase and carboxylesterase activities and inhibit multifunctional oxidase activity. The growth, development, and reproduction of the F population remain inhibited by lambda-cyhalothrin treatment in the adult stage, and inhibitory effects increase with increased lambda-cyhalothrin concentration. The control efficacy of lambda-cyhalothrin against shows cross-generational effects.
高效氯氟氰菊酯是一种合成拟除虫菊酯类杀虫剂，广泛用于防治食叶害虫。由于杀虫剂抗性增加，了解杀虫剂的亚致死跨代效应很重要。我们研究了高效氯氟氰菊酯的亚致死浓度（SLCs）（LC₁₀、LC₂₅和LC₅₀）对F₁和F₂代的生长、繁殖及解毒酶活性的影响。高效氯氟氰菊酯对成虫有毒，48小时的LC₅₀为0.355毫克/升。在亚致死浓度下，高效氯氟氰菊酯显著降低F₁和F₂代成虫的寿命和平均繁殖力，并延长卵、幼虫和蛹期以及成虫产卵前期的持续时间。此外，高效氯氟氰菊酯浓度增加会显著降低F₂代的净繁殖率以及有限增长率和内禀增长率，并显著增加平均世代周期。用高效氯氟氰菊酯的亚致死浓度处理48小时的F₁代成虫的解毒酶活性呈上升趋势。结果表明，低浓度的高效氯氟氰菊酯会诱导谷胱甘肽S-转移酶和羧酸酯酶的活性，并抑制多功能氧化酶的活性。在成虫阶段，高效氯氟氰菊酯处理仍会抑制F₂种群的生长、发育和繁殖，且抑制作用随高效氯氟氰菊酯浓度的增加而增强。高效氯氟氰菊酯对[害虫名称未明确]的防治效果呈现跨代效应。
