Lethal and sublethal effects of a novel cis-nitromethylene neonicotinoid insecticide, cycloxaprid, on Bemisia tabaci
文献类型: 外文期刊
作者: Wang, Ran 1 ; Zheng, Huixin 2 ; Qu, Cheng 1 ; Wang, Zehua 1 ; Kong, Zhiqiang 3 ; Luo, Chen 1 ;
作者机构: 1.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100097, Peoples R China
2.Hunan Agr Univ, Dept Pesticide Sci, Changsha 410128, Hunan, Peoples R China
3.Chinese Acad Agr Sci, Inst Agroprod Proc Sci & Technol, Beijing 100193, Peoples R China
关键词: Bemisia tabaci;Cycloxaprid;Neonicotinoids;Sublethal effect;Toxicity
期刊名称:CROP PROTECTION ( 影响因子:2.571; 五年影响因子:3.11 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The tobacco whitefly, Bemisia tabaci (Gennadius), is an important pest because of its potential to threaten agricultural crops worldwide. Currently, this pest is controlled by the application of chemical insecticides. In our pursuit to identify better insecticides for an effective control of this insect pest, we investigated the lethal effects of five neonicotinoid insecticides including four commercial neonicotinoids and a novel neonicotinoid (cycloxaprid) on B. tabaci MED and MEAM1 cryptic species. In addition, we assessed the sublethal effects of cycloxaprid on B. tabaci MED. Lethal effects of the insecticides were determined using the leaf-dip bioassay, and the results showed that among the tested insecticides cycloxaprid was more toxic to B. tabaci MED and MEAM1 than others, with LC50 values of 0.70 mg/L and 0.59 mg/L, respectively. Cycloxaprid at LC25 (0.16 mg/L) induced sublethal effects in adult MED by prolonging the developmental periods and decreasing the survival rates of all larval instars, pseudopupal and adult stages. Moreover, it significantly shortened the oviposition period of females and decreased their fecundity. Hatching rate of eggs laid by females exposed to LC25 was also markedly reduced. These results indicate that cycloxaprid is a novel alternate insecticide that may effectively control B. tabaci populations. (C) 2016 Elsevier Ltd. All rights reserved.
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