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

Daglish, G.J. and Nayak, M.K. (2012) Potential of the neonicotinoid imidacloprid and the oxadiazine indoxacarb for controlling five coleopteran pests of stored grain. Insect Science, 19 (1). pp. 96-101.

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Article Link(s): http://dx.doi.org/10.1111/j.1744-7917.2011.01430.x

Publisher URL: http://onlinelibrary.wiley.com

Abstract

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 (F.) (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 Cryptolestes ferrugineus (Stephens) (the flat 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 reproduction 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.

Item Type:Article
Business groups:Crop and Food Science
Additional Information:© 2011 The State of Queensland (Department of Employment, Economic Development and Innovation) Journal compilation © Institute of Zoology, Chinese Academy of Sciences.
Keywords:Imidacloprid; insecticides; mortality; plant pests; reproduction; stored products pests; death rate; indoxacarb; rice weevil; sawtoothed grain beetle; storage pests; stored-product pests.
Subjects:Science > Botany
Plant pests and diseases
Plant culture > Field crops
Deposited On:31 May 2012 07:01
Last Modified:05 Sep 2016 04:40

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