Lethal and sublethal effects of sulfoxaflor on the small brown planthopper Laodelphax striatellus

文献类型： 外文期刊

第一作者： Xu, Lu

作者： Xu, Lu;Gu, Zhong-Yan;Zhao, Chun-Qing;Zhang, Ya-Nan;Liu, Ying

作者机构：

关键词： Laodelphax striatellus;Sulfoxaflor;Sublethal effect;Toxicity;Hormesis

期刊名称：JOURNAL OF ASIA-PACIFIC ENTOMOLOGY （ 影响因子：1.303； 五年影响因子：1.427 ）

ISSN： 1226-8615

年卷期： 2016 年 19 卷 3 期

页码：

收录情况： SCI

摘要： Laodelphax striatellus (Fallen),.as an important pest of gramineous crops, has developed resistance to multiple classes of insecticides, impairing control efficiency. However, the application of insecticides is still the main control measure for it Herein, the lethal effects of seven insecticides as well as sulfoxaflor, which has been introduced and registered for controlling L. striatellus in China, were investigated. The acute toxicity of these insecticides on the L. striatellus adults was ranked as sulfoxaflor > abamectin > dinotefuran > emamectin benzoate > ethofenprox > imidacloprid > chlorantraniliprole > chlorpyrifos. The toxicity of sulfoxaflor against the adults was highest with LD50 at 1.07-1.09 ng/insect. In addition, the sublethal effects of lower lethal dose LD3 (0.06 ng/insect), low lethal dose L-10 (0.15 ng/insect) and moderate lethal dose LD30 (0.49 ng/insect) of sulfoxaflor for L. striatellus were assessed as well. Both LD10 and LD30 induced slower nymphal development period, shorter oviposition period and longer pre-oviposition period in L. striatellus. The LD30 also shortened the longevity of females. Hormesis on fecundity was observed in L. striatellus exposed to LD3. Therefore, the net reproductive rate (R-0) was increased by LD3. The intrinsic rate of increase (r(m)) was reduced by LD10 and LD30 while mean generation time (T) and doubling time (DT) were prolonged. The acute sulfoxaflor doses in its toxicological properties need to be considered when develop L. striatellus control strategy with sulfoxaflor. These results demonstrate that sulfoxaflor is a valid candidate for L striatellus management. (C) 2016 Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection Society. Published by Elsevier B.V. All rights reserved.

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