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Toxicity and Sublethal Effect of Triflumezopyrim Against Red Imported Fire Ant (Hymenoptera: Formicidae)
Journal of Economic Entomology ( IF 2.2 ) Pub Date : 2020-05-08 , DOI: 10.1093/jee/toaa083
Lei Wang 1 , Fei Zhao 1 , Qiuhong Tao 1 , Jiayi Li 1 , Yijuan Xu 1 , Zhiqiang Li 2 , Yongyue Lu 1
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Abstract The use of insecticide remains the frontline method in controlling red imported fire ant (Solenopsis invicta Buren) (Hymenoptera: Formicidae), one of the worst invasive ants in the world. Neonicotinoids are effective ingredients in toxic baits for suppressing S. invicta population. To search for new and effective insecticides, the toxicity and sublethal effects of triflumezopyrim, a novel neonicotinoid analog, were evaluated against S. invicta. No high mortality of ants was observed after they fed on sugar water containing 120 µg/ml triflumezopyrim for 72 h; however, 100% mortality was achieved after ants fed on sugar water containing 10 µg/ml triflumezopyrim for 2 wk. Furthermore, at 10 µg/ml, triflumezopyrim did not inhibit ant food consumption within the 7-d treatment period. These results indicate that triflumezopyrim is a slow acting toxin and may be qualified as bait toxin for managing red imported fire ants. At 1 µg/ml, triflumezopyrim did not cause any significant effect on colony growth within 56 d and did not inhibit the food consumption during the whole trial period. At 10 µg/ml, triflumezopyrim displayed a significant reduction of aggressiveness during confrontation with native ants, resulting in higher mortality than the ants in the control. However, at 1 µg/ml, triflumezopyrim did not show any significant impact on both aggressiveness and mortality of the red imported fire ants. Graphical Abstract

中文翻译:

三氟嘧啶对进口红火蚁(膜翅目:蚁科)的毒性和亚致死作用

摘要 使用杀虫剂仍是防治世界上入侵最严重的蚂蚁之一——红火蚁(Solenopsis invicta Buren)(膜翅目:蚁科)的前线方法。新烟碱是毒饵中抑制 S. invicta 种群的有效成分。为了寻找新的有效杀虫剂,评估了三氟嘧啶(一种新型新烟碱类似物)对 S. invicta 的毒性和亚致死作用。蚂蚁以含 120 µg/ml 三氟嘧啶的糖水为食 72 小时后未观察到高死亡率;然而,在用含有 10 µg/ml 三氟虫脒的糖水喂食 2 周后,蚂蚁的死亡率达到了 100%。此外,在 10 µg/ml 的浓度下,三氟甲嘧啶在 7 天的治疗期内不会抑制蚂蚁的食物消耗。这些结果表明,三氟甲嘧啶是一种缓慢作用的毒素,可作为防治红火蚁的诱饵毒素。在 1 µg/ml 时,三氟甲嘧啶在 56 d 内不会对菌落生长产生任何显着影响,并且在整个试验期间不会抑制食物消耗。在 10 µg/ml 时,三氟甲嘧啶在与本地蚂蚁对抗时表现出攻击性显着降低,导致死亡率高于对照蚂蚁。然而,在 1 µg/ml 时,三氟甲嘧啶对红色进口火蚁的攻击性和死亡率没有显示出任何显着影响。图形概要 在整个试验期间,三氟甲嘧啶在 56 d 内对菌落生长没有产生任何显着影响,并且没有抑制食物消耗。在 10 µg/ml 时,三氟甲嘧啶在与本地蚂蚁对抗时表现出攻击性显着降低,导致死亡率高于对照蚂蚁。然而,在 1 µg/ml 时,三氟甲嘧啶对红色进口火蚁的攻击性和死亡率没有显示出任何显着影响。图形概要 在整个试验期间,三氟甲嘧啶在 56 d 内对菌落生长没有产生任何显着影响,并且没有抑制食物消耗。在 10 µg/ml 时,三氟甲嘧啶在与本地蚂蚁对抗时表现出攻击性显着降低,导致死亡率高于对照蚂蚁。然而,在 1 µg/ml 时,三氟甲嘧啶对红色进口火蚁的攻击性和死亡率没有显示出任何显着影响。图形概要
更新日期:2020-05-08
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