斑蝥素对11种害虫的杀虫活性  

Bioactivity of cantharidin against eleven pests

作　　者：刘瑞瑞[1] 马燕[1] 马志卿[2] 张雅林[1] 

机构地区：[1]西北农林科技大学植保资源与病虫害治理教育部重点实验室,陕西杨凌712100 [2]西北农林科技大学无公害农药服务中心,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2010年第11期181-185,共5页Journal of Northwest A&F University(Natural Science Edition)

基　　金：陕西省“13115”科技创新工程重大科技专项(2007ZDKG-14);陕西省科学技术研究发展计划项目(农业攻关)(2007K01-17);国家公益性行业(农业)科研专项(200903052)

摘　　要：【目的】明确天然产物斑蝥素的杀虫谱和作用方式。【方法】采用不同生测方法,测定斑蝥素及1.0%斑蝥素乳油对11种害虫的室内毒力,观察了家蝇成虫的中毒症状。【结果】斑蝥素对家蝇成虫具有一定的胃毒作用,其48,72h的胃毒LC50分别为781.90,397.23mg/L,无触杀、熏蒸作用,其中胃毒作用较缓慢,处理约18h后才表现出明显的中毒症状;对玉米象成虫的48h胃毒LC50和触杀LD50分别为373.17mg/L和0.36μg/虫,无熏蒸活性;对大叶黄杨斑蛾4龄幼虫的24,48h触杀LD50分别为0.084,0.049μg/虫;1.0%斑蝥素乳油对烟蚜、菊姬长管蚜、桃粉蚜、萝卜蚜和月季长管蚜5种蚜虫无翅成蚜的12h触杀LC50分别为19.52,15.84,16.63,25.94,26.20mg/L;1.0%斑蝥素乳油对朱砂叶螨、麦圆蜘蛛和山楂叶螨成螨的12h触杀LC50分别为8.26,13.38,8.46mg/L。【结论】斑蝥素对多种害虫均具有不同程度的毒杀作用,其主要作用方式为触杀和胃毒。【Objective】The study was done in order to ascertain the further insecticidal spectra and mode of action of the natural product,cantharidin.【Method】Bioactivity of cantharidin was tested against eleven pests by different laboratory bioassay methods,and the toxic symptom of adult housefly was observed.【Result】Cantharidin had certain stomach action against housefly adults,but it had no contact or fumiganting action.Its LC50 values of stomach toxicity to the housefly adults were 781.90mg/L(48h)and 397.23mg/L(72h...

关 键 词：斑蝥素 杀虫活性 作用方式 杀虫谱 

分 类 号：S482.3[农业科学—农药学]