Residual toxicity and sublethal effects of chlorantraniliprole on Plutella xylostella (Lepidoptera: Plutellidae)
Residual toxicity and sublethal effects of chlorantraniliprole on Plutella xylostella (Lepidoptera: Plutellidae)
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DOI：
10.1002/ps.3282
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发表时间：
2012-08-01
影响因子：
4.1
通讯作者：
Gao, Xiwu
中科院分区：
文献类型：
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作者：
Han, Wensu;Zhang, Shufa;Gao, Xiwu
背景：小菜蛾是世界上最重要的十字花科蔬菜害虫。三氯苯丙胺是一种用于控制鳞翅目害虫的新型邻氨基二胺类杀虫剂。研究了氯苯尼泊在LC_(10)(0.02 mg L~(-1))和LC_(25)(LC_(25))(0.06 mg L~(-1))下作用48h对小菜蛾的剂量效应、残留毒性和亚致死效应。结果：叶浸法测定结果表明，氯氰利普对小菜蛾幼虫有较高的毒力，对敏感品系和野外品系的48h半数致死量(LC_(50))分别为0.23和0.25 mg L-1。当幼虫暴露在萝卜幼苗上喷洒的杀虫剂时，氯氰菊酯也有较长的持续效应。氯氰菊酯的亚致死作用表现为化蛹、化蛹重量和成虫羽化率降低。雌虫产卵前期持续时间延长，产卵量和卵孵化能力下降，子代存活率下降。净繁殖率(R0)、内禀增长率(Rm)、有限增长率(？)治疗组显著低于对照组。结论：氯苯尼泊对小菜蛾有较好的杀灭效果。亚致死浓度的氯氰菊酯可能通过降低小菜蛾的存活率和繁殖力，延缓其发育，从而抑制其种群增长。版权所有(C)2012年美国化学工业学会
BACKGROUND: The diamondback moth (DBM), Plutella xylostella (L.), is the most important pest of cruciferous vegetables in the world. Chlorantraniliprole is a novel anthranilic diamide insecticide registered for the control of lepidopteran pests. The dose response, residual toxicity and sublethal effects of chlorantraniliprole applied for 48 h at LC10 (0.02 mg L-1) and LC25 (0.06 mg L-1) on P. xylostella were investigated. RESULTS: Leaf-dip bioassays showed that chlorantraniliprole had a high level of toxicity against larvae of P. xylostella, and the 48 h LC50 values were 0.23 and 0.25 mg L-1 for a susceptible and field strain respectively. Chlorantraniliprole also had a long-lasting effect when the larvae were exposed to chlorantraniliprole field sprayed on radish seedlings. Sublethal effects of chlorantraniliprole were indicated by reduced pupation, pupal weight and adult emergence rates. There was also an increase in the duration of female preoviposition period, decreased fecundity and egg hatch and decreased survival rates of the offspring. The mean values of the net reproductive rate (R0), intrinsic rate of increase (rm), finite rate of increase (?) were significantly lower in the treatment than in control groups. CONCLUSIONS: These results indicate that chlorantraniliprole is effective against P. xylostella. The sublethal concentrations of chlorantraniliprole may reduce the population growth of P. xylostella by decreasing its survival and reproduction, and by delaying its development. Copyright (c) 2012 Society of Chemical Industry