苯甲酰基脲类杀虫剂对异迟眼蕈蚊的生物活性及亚致死效应  

Bioactivity and Sublethal Effect of Benzoylurea Insecticide Against to Bradysia difformis

作　　者：沈登荣[1] 何超[1] 陆谦 陈潇潇 田学军[1] 张宏瑞[2] SHEN Dengrong;HE Chao;LU Qian;CHEN Xiaoxiao;TIAN Xuejun;ZHANG Hongrui(College of Life Science and Technology,Honghe University,Mengzi,Yunnan 661199;Plant Protection College,Yunnan Agricultural University,Kunming,Yunnan 650201)

机构地区：[1]红河学院生命科学与技术学院,云南蒙自661199 [2]云南农业大学植物保护学院,云南昆明650201

出　　处：《北方园艺》2018年第18期42-47,共6页Northern Horticulture

基　　金：云南省教育厅科研基金重点资助项目(2013Z148);农业部公益性行业科研专项资助项目(201103026;200803025);红河学院大学生科技创新基金资助项目(SZ1716);红河学院植物保护硕士点建设资助项目

摘　　要：以异迟眼蕈蚊为试虫,采用浸渍法和药膜法,研究了4种苯甲酰基脲类杀虫剂对异迟眼蕈蚊的生物活性和亚致死效应,以探讨苯甲酰基脲杀虫剂对异迟眼蕈蚊的致毒效应。结果表明:氟啶脲和氟虫脲对2龄和4龄幼虫的毒力相对较高,其中氟啶脲对2龄和4龄幼虫的LC50分别为5.526mg·L^(-1)和7.521mg·L^(-1)。4种药剂亚致死浓度均导致4龄幼虫发育历期和蛹期的延长,成虫单雌产卵量和卵孵化率的下降,其中氟虫脲和氟啶脲对4龄幼虫发育历期、蛹期、化蛹率和羽化率有显著影响(P<0.05),因此氟啶脲和氟虫脲可用于温室和田间防治异迟眼蕈蚊幼虫的理想药剂。Bradysia difformis was used as test insect,the bioassay and sublethal effect of four benzoylurea insecticides against to B.difformis were tested by dipping method and drug membrane method,in order to explore the toxic effect of benzoylurea insecticide against to Bradysia difformis.The results showed that the toxicity of chlorfluazuron and flufenoxuron were higher in 2 nd and 4 th instar larvae,and the LC50 of chlorfluazuron was 5.526 mg·L^-1 and 7.521 mg·L^-1 respectively.The sublethal concentration of four pesticides could extend the developmental period of 4 th instar larvae and pupal stage,and reduce the pupation rate and emergence rate,chlorfluazuron and flufenoxuron could significantly effect to the developmental period of 4 th instar larvae,pupal stage,pupation rate and emergence rate（P〈0.05）,in greenhouse and field,chlorfluazuron and flufenoxuron could be used as ideal pesticides to control the larvae of B.difformis.

关 键 词：苯甲酰基脲类杀虫剂 异迟眼蕈蚊 致毒效应 生物活性 

分 类 号：S482.3[农业科学—农药学]