| 张文婷，徐 军，罗 玲，苑金戈，徐文欢，刘 怀，王 晶，李亚迎,2025,溴虫氟苯双酰胺对斜纹夜蛾及其天敌叉角厉蝽的亚致死效应[J].环境昆虫学报,(4):1282-1289 |
| 溴虫氟苯双酰胺对斜纹夜蛾及其天敌叉角厉蝽的亚致死效应 |
| Sublethal effects of Broflanilide on Spodoptera litura and its natural enemy Eocanthecona furcellata |
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| DOI： |
| 中文关键词: 溴虫氟苯双酰胺 斜纹夜蛾 叉角厉蝽 亚致死效应 协同防治 |
| 英文关键词:Broflanilide Spodoptera litura Eocanthecona furcellata sublethal effects synergistic control |
| 基金项目:国家重点研发计划（2023YFD1400600）；中国烟草总公司重庆市公司科技项目（B20241NY1307）；重庆市博士后出站留渝资助项目 |
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| 中文摘要: |
| 斜纹夜蛾Spodoptera litura是烟田系统重要的暴食性害虫，而叉角厉蝽Eocanthecona furcellata作为其优势捕食性天敌，具有良好的应用控害潜力。评估新型杀虫剂溴虫氟苯双酰胺对二者的亚致死效应，对实现斜纹夜蛾的化学生物协同防控具有关键意义。本研究采用叶片浸渍法测定了溴虫氟苯双酰胺等4种化学药剂对斜纹夜蛾3龄幼虫的毒力，并通过喷雾处理研究了溴虫氟苯双酰胺亚致死剂量（LC30）对该害虫亲代（F0）及子代（F1）的发育历期、取食量、繁殖力的影响，同时分析该药剂对叉角厉蝽雌成虫寿命、产卵参数及子代若虫存活率的影响。结果表明，溴虫氟苯双酰胺对斜纹夜蛾的LC30为0.004 mg/L，该剂量喷雾处理后显著延长F0代3~6龄幼虫发育历期、降低3~6龄日均取食量和总产卵量，延长F1代总发育历期2.21 d、降低产卵量31.6%；该处理致使叉角厉蝽雌成虫产卵前期延长6.33 d、总产卵量减少54.19%、产卵次数降低4.00次，但对成虫寿命、子代存活率和发育历期无显著影响。该研究结果明确了溴虫氟苯双酰胺对靶标害虫的持续控制潜力，以及亚致死剂量对天敌叉角厉蝽繁殖的影响，可为优化施药策略和捕食性天敌保护提供理论依据。 |
| 英文摘要: |
| Spodoptera litura is a voracious pest in tobacco fields, while Eocanthecona furcellata, as its dominant predatory natural enemy, exhibits significant potential in pest control. Evaluating the sublethal effects of the novel insecticide broflanilide on both species is crucial for achieving synergistic chemical-biological control of S. litura. In this study, the leaf dip method was employed to determine the toxicity of four chemical insecticides, including broflanilide, against the 3rd instar larvae of S. litura. The sublethal dose (LC30) of broflanilide was applied via spray treatment to investigate its impacts on the developmental duration, food consumption, and fecundity of the parental (F0) and offspring (F1) generations of S. litura. Concurrently, the effects of this insecticide on the lifespan, oviposition parameters, and of offspring nymphs survival rate of E. furcellata female adults were analyzed. Results showed that the LC30 of broflanilide against S. litura was 0.004 mg/L. Spray treatment with this sublethal concentration significantly prolonged the developmental duration of 3rd-6th instar larvae in the F0 generation, reduced the daily food consumption and total fecundity of 3rd-6th instars. In the F1 generation, the total developmental duration was prolonged by 2.21 days, and fecundity decreased by 31.6%. For E. furcellata female adults, this treatment prolonged the pre-oviposition period by 6.33 days, reduced total fecundity by 54.19%, and decreased oviposition frequency by 4.00 times, while showing no significant effects on adult lifespan, offspring survival rate, or developmental duration. This study clarifies the sustained control potential of broflanilide against target pests and the sublethal impacts on the reproduction of E. furcellata, providing a theoretical basis for optimizing pesticide application strategies and protecting predatory natural enemies. |
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