朱砂叶螨阿维菌素抗性品系选育及适合度研究  

Resistance selection and relative fitness of Tetranychus cinnabarinus(Boisduval)to abamectin

作　　者：何林[1] 杨羽[1] 符建章[1] 王进军[1] 赵志模[1] 

机构地区：[1]西南农业大学植物保护学院重庆市昆虫学及害虫控制工程重点实验室,重庆400716

出　　处：《植物保护学报》2004年第4期395-400,共6页Journal of Plant Protection

基　　金：国家自然科学基金资助项目(39970493)

摘　　要：为研究朱砂叶螨抗性适合度,在抗性选育基础上实验室组建了朱砂叶螨相对敏感品系、抗阿维菌素品系在豇豆和棉花上的生命表(26℃),比较了相对敏感品系和抗性品系在两种寄主上发育历期、繁殖力及种群参数的差异。结果表明:连续汰选42代,朱砂叶螨对阿维菌素(乳油制剂)产生约8.7倍抗性;与相对敏感品系相比,抗性品系在棉花上若螨期缩短0.55天、世代历期延长0.88天,平均产卵量无显著差异;在豇豆上卵期缩短1.71天,若螨期延长0.41天,世代历期缩短2.06天,平均产卵量减少84.29粒/雌。抗性品系在棉花和豇豆上的相对适合度分别为0.89和0.58,表明该螨产生抗药性后,存在适合度缺陷。Through resistance selection,the life table of abamectin-resistant and susceptiblestrains of Tetranychus cinnabarinus on cotton and cowpea were established in laboratory to eval-uate the relative fitness of two strains.The results showed that after 42 generations selection,T.cinnabarinus developed 8.7-fold resistance to abamectin-EC.Compared with the relativesusceptible strain,the duration of nymph of the resistant strain shortened 0.55d,and the gen-eration time extended 0.88d when fed on cotton.If fed on cowpea,the duration of egg short-ened by 1.71d,nymph stage elongated 0.41 d,the generation time shortened 2.06d,and thefecundity decreased 84.29 eggs per female.The relative fitness of the abamectin-resistantstrains fed on cotton and cowpea were 0.89 and 0.58,respectively.The results also revealedthat the abamectin-resistant strain of T.cinnabarinus had fitness cost.

关 键 词：朱砂叶螨 抗性品系 豇豆 棉花 产卵量 选育 世代 若螨 相对适合度 种群参数 

分 类 号：S433.7[农业科学—农业昆虫与害虫防治]