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 Provided for non-commercial research and education use. Not for reproduction, distribution or commercial use.
Permanent larva phenomenon is the elongation in the larval stage. This phenomenon occurs as a result of imbalance in insect hormones after treating the larvae with some insecticides such as insect growth regulators (IGR). This work aimed to explain this phenomenon as a result of treating S. littoralis 4 th instar larvae with Spinetoram, Lambda-cyhalothrin, Chlorpyrifos and Emamectin Benzoate. Highly significant increase in larval duration was recorded in treated larva. Significant changes in total carbohydrates, total protein and total lipid contents as well as the main enzymes activities were recorded in the permanent larvae. Genetic differences between normal untreated S. littoralis and permanent larvae were also studied. * Increase than control (%) = 100 (Treated-Control) / Control ** means highly significant (p of t ≤ 0.001) * Increase than control (%) = 100 (Treated-Control) / Control ** means highly significant (p of t ≤ 0.001)
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