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2015•BIOINFOLET - A Quarterly Journal of Life SciencesRequires access

Evaluation of synthetic synergists for suppression of malathion resistant population of Sitophilus oryzae (L.) and Tribolium castaneum (Herbst.)

Devaramane Raghavendra, T. Manoharan, G. Preetha, N. L. Naveena

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Abstract

Bioassay with metabolic synergists has been carried out to identify the detoxifying enzymes in the malathion resistant population of stored grain pests. In Sitophilus oryzae, PBO (Piperonyl butoxide) and TPP (Triphenyl phosphate) exhibited significantly high level of synergism at 1000 ppm with malathion, and recorded suppression of resistance (SR) to the extent of 78.37 and 76.57 per cent, respectively. DEM (Diethyl maleate) slightly suppressed malathion resistance (SR = 24.32 per cent). Similarly, in case of Tribolium castaneum, PBO recorded moderate level of synergism with SR (SR = 42.36%), whereas TPP and DEM slightly reduced malathion resistance with a SR of 25.16 and 18.64 per cent, respectively.

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What this paper is about

Bioassay with metabolic synergists has been carried out to identify the detoxifying enzymes in the malathion resistant population of stored grain pests. In Sitophilus oryzae, PBO (Piperonyl butoxide) and TPP (Triphenyl phosphate) exhibited significantly high level of synergism at 1000 ppm with malathion, and recorded suppression of resistance (SR) to the extent of 78.37 and 76.57 per cent, respectively. DEM (Diethyl maleate) slightly suppressed malathion resistance (SR = 24.32 per cent). Similarly, in case of Tribolium castaneum, PBO recorded moderate level of synergism with SR (SR = 42.36%), whereas TPP and DEM slightly reduced malathion resistance with a SR of 25.16 and 18.64 per cent, respectively.

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Available abstract

Bioassay with metabolic synergists has been carried out to identify the detoxifying enzymes in the malathion resistant population of stored grain pests. In Sitophilus oryzae, PBO (Piperonyl butoxide) and TPP (Triphenyl phosphate) exhibited significantly high level of synergism at 1000 ppm with malathion, and recorded suppression of resistance (SR) to the extent of 78.37 and 76.57 per cent, respectively. DEM (Diethyl maleate) slightly suppressed malathion resistance (SR = 24.32 per cent). Similarly, in case of Tribolium castaneum, PBO recorded moderate level of synergism with SR (SR = 42.36%), whereas TPP and DEM slightly reduced malathion resistance with a SR of 25.16 and 18.64 per cent, respectively.

Key concepts: Malathion, Sitophilus, Piperonyl butoxide, Bioassay, Toxicology, Population, Triphenyl phosphate, Chemistry

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Evaluation of synthetic synergists for suppression of malathion resistant population of Sitophilus oryzae (L.) and Tribolium castaneum (Herbst.) — Research Paper | ScholarLens