Yang Hong, Wang Zhao, Jing Dao-Chao
Ying Yong Sheng Tai Xue Bao. 2013 Feb;24(2):549-55.
Chlorantraniliprole is a newly developed insecticide targeting at lepidopteron pests in rice fields, whereas Nilaparvata lugens (Stål) is one of the important non-target pests of the insecticide. In this paper, the rice stem dipping method was adopted to test the toxicity of chlorantraniliprole to the 3rd instar nymphs and adults of N. lugens. The LC50 of chlorantraniliprole to the 3rd instar nymphs and adults was 26.85 and 35.53 mg.L-1, respectively. When the 3rd instar nymph was exposed to the LC10 and LC25 of chlorantraniliprole, the life span of the survived female adults was not significantly affected. However, when treated with LC25 dosage, the fecundity of the survived female adults was significantly reduced by 45.6 eggs. After the 3rd instar nymph was treated with the sublethal doses LC10 and LC25 of chlorantraniliprole, the fecundity of the F1, females were decreased significantly by 43.5 and 72.9 eggs, and the life span of the F1 females was shortened by 1.35 and 2.87 d, respectively. The developmental periods of all the instars of F, generation were delayed after treated with the sublethal doses LC10 and LC25 of chlorantraniliprole. The intrinsic rate of increase (rm) was decreased by 12.8% and 23.5%, and the net reproductive rate (R0) was decreased by 37.4% and 68.7%, respectively. Meanwhile, the mean generation time (T) and population doubling time (t) were delayed. Overall, the sublethal doses of chlorantraniliprole could suppress the population growth of N. lugens.
氯虫苯甲酰胺是一种新开发的针对稻田鳞翅目害虫的杀虫剂，而褐飞虱是该杀虫剂的重要非靶标害虫之一。本文采用稻茎浸渍法测定氯虫苯甲酰胺对褐飞虱3龄若虫和成虫的毒性。氯虫苯甲酰胺对褐飞虱3龄若虫和成虫的LC50分别为26.85和35.53mg.L-1。当3龄若虫暴露于氯虫苯甲酰胺的LC10和LC25时，存活雌成虫的寿命未受到显著影响。然而，当用LC25剂量处理时，存活雌成虫的繁殖力显著降低了45.6粒卵。3龄若虫用氯虫苯甲酰胺的亚致死剂量LC10和LC25处理后，F1代雌虫的繁殖力分别显著降低了43.5和72.9粒卵，F1代雌虫的寿命分别缩短了1.35和2.87天。用氯虫苯甲酰胺的亚致死剂量LC10和LC25处理后，F1代各龄期的发育历期均延迟。内禀增长率（rm）分别降低了12.8%和23.5%，净生殖率（R0）分别降低了37.4%和68.7%。同时，平均世代时间（T）和种群加倍时间（t）延迟。总体而言，氯虫苯甲酰胺的亚致死剂量能够抑制褐飞虱种群的增长。
