Potential of the neonicotinoid imidacloprid and the oxadiazine indoxacarb for controlling five coleopteran pests of stored grain  

作　　者：Gregory J. Daglish Manoj K. Nayak 

机构地区：[1]Agri-Science Queensland, Department of Employment, Economic Development and Innovation, Brisbane, Queensland, Australia

出　　处：《Insect Science》2012年第1期96-101,共6页昆虫科学（英文版）

摘　　要：The potential for using imidacloprid （a neonicotinoid） and indoxacarb （an oxadiazine） as grain protectants was investigated in bioassays against resistant strains of five stored grain beetles. The species investigated were Rhyzopertha dominica （E） （the lesser grain borer）, Sitophilus oryzae （L.） （the rice weevil）, Tribolium castaneum （Herbst） （the rust-red flour beetle）, Oryzaephilus surinamensis （L.） （the saw tooth flour beetle）, and Cryptolestesferrugineus （Stephens） （the fiat grain beetle）. Each of these species has developed resistance to one or more protectants, including organophosphorus insecticides, synthetic pyrethroids and the juvenile hormone analogue methoprene. Mortality and re- production after a 2-week exposure of adults to treated wheat depended on species, dose and insecticide. Imidacloprid had no effect on S. oryzae at any dose, but none of the other species produced any live progeny at 10 mg/kg. Indoxacarb had no effect on T. castaneum at any dose, but none of the other species produced any live progeny at 5 mg/kg. The results show that although both imidacloprid and indoxacarb can control at least four of the five key pests tested at doses comparable to those used for organophosphorus protectants, more potent neonicotinoid or oxadiazine insecticides would be needed than either of these to provide broad spectrum protection of stored grain .The potential for using imidacloprid （a neonicotinoid） and indoxacarb （an oxadiazine） as grain protectants was investigated in bioassays against resistant strains of five stored grain beetles. The species investigated were Rhyzopertha dominica （E） （the lesser grain borer）, Sitophilus oryzae （L.） （the rice weevil）, Tribolium castaneum （Herbst） （the rust-red flour beetle）, Oryzaephilus surinamensis （L.） （the saw tooth flour beetle）, and Cryptolestesferrugineus （Stephens） （the fiat grain beetle）. Each of these species has developed resistance to one or more protectants, including organophosphorus insecticides, synthetic pyrethroids and the juvenile hormone analogue methoprene. Mortality and re- production after a 2-week exposure of adults to treated wheat depended on species, dose and insecticide. Imidacloprid had no effect on S. oryzae at any dose, but none of the other species produced any live progeny at 10 mg/kg. Indoxacarb had no effect on T. castaneum at any dose, but none of the other species produced any live progeny at 5 mg/kg. The results show that although both imidacloprid and indoxacarb can control at least four of the five key pests tested at doses comparable to those used for organophosphorus protectants, more potent neonicotinoid or oxadiazine insecticides would be needed than either of these to provide broad spectrum protection of stored grain .

关 键 词：BEETLES IMIDACLOPRID INDOXACARB stored grain 

分 类 号：S763.38[农业科学—森林保护学] S482[农业科学—林学]