氯虫苯甲酰胺亚致死剂量对异色瓢虫捕食功能的影响  

Sub-lethal Effect of Chlorantraniliprole on Predation Function of Harmonia axyridis

作　　者：皇甫佳一 李平[1] 高冬梅[1] 郭萧[1] HUANGFU Jiayi;LI Ping;GAO Dongmei;GUO Xiao(Chongqing Academy of Agricultural Sciences/Key Laboratory of Southwest Mountain Smart Agricultural Technology(Co-construction by the Ministry and Province),Ministry of Agriculture and Rural Affairs,Chongqing 401329,China)

机构地区：[1]重庆市农业科学院/农业农村部西南山地智慧农业技术重点实验室(部省共建),重庆401329

出　　处：《中国生物防治学报》2024年第6期1398-1405,共8页Chinese Journal of Biological Control

基　　金：重庆市农业科学院绩效激励引导专项(cqaas2022jxjl007);重庆市自然科学基金(CSTB2022NSCQ-MSX1197);重庆市市级财政科研项目(cqaas2023sjczzd001,cqaas2023sjczqn024)。

摘　　要：本文主要研究氯虫苯甲酰胺对异色瓢虫Harmonia axyridis的毒力作用及对其捕食能力的影响。通过滤纸药膜法明确氯虫苯甲酰胺对异色瓢虫的非靶标毒性,并利用捕食功能反应模型评价其对草地贪夜蛾的捕食能力。结果表明,氯虫苯甲酰胺对异色瓢虫具有较强毒力作用,LC_(50)为25.216 mg/L。氯虫苯甲酰胺亚致死剂量处理前后,异色瓢虫捕食功能反应均为Holling Ⅱ型,但模型参数发生变化,4龄幼虫,雌、雄成虫在受到杀虫剂LC_(10)处理后,攻击率分别降低18.61%,28.03%和10.41%;猎物处理时间分别提高61.54%,23.08%和25.00%;日均最大捕食量分别降低49.62%,41.52%和28.33%。LC_(20)处理后,攻击率分别降低21.99%,26.67%和14.30%;猎物处理时间分别提高107.69%,76.92%和91.67%;日均最大捕食量分别降低62.44%,58.56%和55.28%。结果表明,氯虫苯甲酰胺对异色瓢虫的捕食功能具有显著影响。其中,对4龄幼虫捕食能力影响更大。结果能够帮助筛选与异色瓢虫兼容的化学杀虫剂以便更好发挥异色瓢虫的作用。To identify the toxicity of chlorantraniliprole against Harmonia axyridis and how the insecticide impacts the natural enemy’s predation ability,insecticide-impregnated filter method was used to determine non-target toxicity of chlorantraniliprole,and its predation ability on Spodoptera frugiperda was also evaluated by predator-prey functional response model.The results showed that chlorantraniliprole induced toxic effect in H.axyridis(2^(nd) instar larvae),with LC_(50)(25.216 mg/L).Sub-lethal concentration of chlorantraniliprole would not change the type of functional response,which was still Holling Ⅱ,but the model parameters changed.After treatment with sub-lethal concentration LC_(10),the attack rates of 4^(th) instar larvae,female and male adults respectively decreased by 18.61%,28.03%,and 10.41%,the handling time respectively increased by 61.54%,23.08%,and 25.00%,and the maximum number of preys consumed per day respectively decreased by 49.62%,41.52%,and 28.33%.After treatment with sub-lethal concentration LC_(20),the attack rate respectively decreased by 21.99%,26.67%,and 14.30%,the handling time respectively increased by 107.69%,76.92%,and 91.67%,and the maximum number of preys consumed per day respectively decreased by 62.44%,58.56%,and 55.28%.The results showed that chlorantraniliprole exposure would significantly impact the predator-prey functional response of H.axyridis,with a greater effect on the 4^(th) instar larvae.The results provided data support for the screening of chemical insecticides compatible with natural enemies and helped H.axyridis work better.

关 键 词：氯虫苯甲酰胺 亚致死效应 非靶标毒性 捕食能力 搜寻能力 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]