The journal of Toxicology and pest control is one of the series issued twice by the Egyptian Academic Journal of Biological Sciences, and is devoted to publication of original papers related to the interaction between insects and their environment. The goal of the journal is to advance the scientific understanding of mechanisms of toxicity. Emphasis will be placed on toxic effects observed at relevant exposures, which have direct impact on safety evaluation and risk assessment. The journal therefore welcomes papers on biology ranging from molecular and cell biology, biochemistry and physiology to ecology and environment, also systematics, microbiology, toxicology, hydrobiology, radiobiology and biotechnology. www.eajbs.eg.net
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ABSTRACT Article History
The journal of Toxicology and pest control is one of the series issued twice by the Egyptian Academic Journal of Biological Sciences, and is devoted to publication of original papers related to the interaction between insects and their environment. The goal of the journal is to advance the scientific understanding of mechanisms of toxicity. Emphasis will be placed on toxic effects observed at relevant exposures, which have direct impact on safety evaluation and risk assessment. The journal therefore welcomes papers on biology ranging from molecular and cell biology, biochemistry and physiology to ecology and environment, also systematics, microbiology, toxicology, hydrobiology, radiobiology and biotechnology. www.eajbs.eg.net
The efficiency and biochemical effects of certain insecticides belonging to different groups namely: emamectin benzoate (Avermactin R ), flubendiamide (Diamide), lufenuron (IGR) as pyridalyl (phenylpyridaloxy) were tested against 4 th larval instar of Spodoptera littoralis (Boisd.) laboratory and field strains using dipping technique. Biochemical effects of the tested insecticides on acetylcholinesterase (AChE) and glutathione-S-transferases (GST) were determined in the treated larvae. The efficacy of the tested insecticides is arranged as follows to LC50 values. The results showed that that flubendiamide was the superior toxicant insecticides (LC50 values were 0.863 ppm and 2.73 ppm for lab and field strains respectively) followed by emamectin benzoate (LC50 values were 1.8 ppm and 10.13 ppm for lab and field strains respectively) then pyridalyl (LC50 values were 4.17 ppm and 38.2 ppm for lab and field strains respectively) and lufenuron (LC50 values were 5.4 ppm and 76.92 ppm for lab and field strains respectively). The data revealed that the treatment with tested insecticides demonstrated inhibition in AChE and GST activity. Based on the results of the present study, it was confirmed the potency of these insecticides against S. littoralis therefor, should be use their use in control programmes.
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