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首页> 外文期刊>Journal of Economic Entomology >Toxicity of thiamethoxam and mixtures of chlorantraniliprole plus acetamiprid, esfenvalerate, or thiamethoxam to neonates of oriental fruit moth (lepidoptera: Tortricidae)
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Toxicity of thiamethoxam and mixtures of chlorantraniliprole plus acetamiprid, esfenvalerate, or thiamethoxam to neonates of oriental fruit moth (lepidoptera: Tortricidae)

机译：噻虫嗪和氯虫腈，扑热息痛，乙草戊酸或噻虫嗪的混合物对东方果蛾新生儿的毒性（鳞翅目：Tor科）

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摘要

To assess the toxicity of thiamethoxam and three mixtures of insecticides to oriental fruit moth, Grapholita molesta (Busck) (Lepidoptera: Tortricidae), we added the insecticides to diet and fed it to neonates of two laboratory colonies; mortality was assessed after 96 h. Thiamethoxam was much less toxic than insecticides previously tested. Five of six analyses of the joint action of chlorantraniliprole plus acetamiprid, esfenvalerate, or thiamethoxam indicated that toxicity was not independent and not correlated. For chlorantraniliprole plus acetamiprid, mortality was slightly lower than expected at low concentrations and greater than expected at high concentrations. For chlorantraniliprole plus esfenvalerate, mortality was less than expected at nearly all concentrations, suggesting antagonism despite the two compounds' different modes of action. For chlorantraniliprole plus thiamethoxam, observed mortality exceeded expected mortality at low concentrations, but this trend did not continue at higher concentrations. Although the null hypothesis of independent and uncorrected toxicity was rejected for chlorantraniliprole plus acetamiprid and chlorantraniliprole plus thiamethoxam in three of four analyses, differences between observed and expected mortality were minor and inconsistent over the range of concentrations tested. We do not expect these mixtures to exhibit significant synergism or antagonism in the field. Apparent antagonism between chlorantraniliprole and esfenvalerate is particularly relevant because these insecticides (or chlorantraniliprole plus a different pyrethroid) may be used together in apples or peaches for control of oriental fruit moth and hemipteran pests. The effectiveness of each insecticide against oriental fruit moth might be reduced in such applications.
机译：为了评估噻虫嗪和三种杀虫剂混合物对东方蛾（Grapholita molesta（Busck）（鳞翅目：Tortricidae））的毒性，我们在饮食中添加了杀虫剂，并将其喂给两个实验室菌落的新生儿。 96小时后评估死亡率。噻虫嗪的毒性比以前测试的杀虫剂低得多。六氯氰菊酯加乙酰胺，乙草戊酸酯或噻虫嗪的联合作用的六项分析中有五项表明毒性不是独立的，也不相关。百氯苯丙胺加乙酰胺的死亡率在低浓度下略低于预期，在高浓度下则高于预期。对于氯蒽醌和依斯戊戊酸酯，几乎在所有浓度下的死亡率均低于预期，这表明尽管两种化合物的作用方式不同，也具有拮抗作用。对于氯虫腈和噻虫嗪，在低浓度下观察到的死亡率超过了预期的死亡率，但是在高浓度下这种趋势并没有持续。尽管在四项分析中的三项中，对氯吡那普利加乙酰胺和氯吡那普加噻虫嗪的独立且未经校正的毒性无效假设被拒绝，但是在所测试的浓度范围内，观察到的死亡率与预期死亡率之间的差异很小且不一致。我们预计这些混合物在该领域不会表现出明显的协同作用或拮抗作用。毒死ili和艾草戊酸酯之间的明显拮抗作用特别重要，因为这些杀虫剂（或毒死pro加上不同的拟除虫菊酯）可以在苹果或桃子中一起使用，以控制东方果蛾和半翅目害虫。在这种应用中，每种杀虫剂对东方果蛾的效力可能会降低。

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