Comparative analyses of the toxic effects of imidacloprid and spirotetramat on Frankliniella occidentalis (Pergande), the vector of tomato zonate spot virus: a laboratory assay

文献类型： 外文期刊

第一作者： Zheng, Xue

作者： Zheng, Xue;Chen, Yongdui;Zhang, Jie;Wu, Kuo;Zhang, Lizhen;Zheng, Kuanyu;Dong, Jiahong;Xu, Jie

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期刊名称：INTERNATIONAL JOURNAL OF PEST MANAGEMENT （ 影响因子：1.907； 五年影响因子：1.849 ）

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收录情况： SCI

摘要： The tomato zonate spot virus (TZSV) is responsible for substantial yield losses in vegetables, tobacco and other cash crops in China in recent years. The western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera, Thripidae), is the main vector of TZSV in Yunnan Province. Because controlling the population of insect vectors is the most efficient way to prevent epidemics of viral diseases, we conducted laboratory assays to assess the potential of using spirotetramat as an alternative to imidacloprid in controlling F. occidentalis. Our results demonstrated that spirotetramat was significantly more lethal than imidacloprid to F. occidentalis at different concentrations. The LC30, LC50 and LC90 values of spirotetramat were all much lower than those of imidacloprid after the same time of treatment. Frankliniella occidentalis was more sensitive when treated with spirotetramat than imidacloprid at the concentrations of 500, 250, 125 and 62.5mg/L, and the median lethal concentrations (LC50) were 285.53, 82.24 and 11.19mg/L at 12, 36 and 72hours after treatment, respectively. Spirotetramat caused 100% mortality of F. occidentalis at 500 and 250 mg/L after 48hours treatment, and at the lowest concentration 125mg/L at 72hours after treatment, respectively. Field experiments carried out elsewhere have confirmed our findings. Together they allow us to conclude that spirotetramat is a promising pesticide for the control F. occidentalis in China.

分类号： S4

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