Insecticides Application and the Egyptian Cotton Leafworm, Spodoptera littoralis (Boisd.) Permanent Larvae
Dahi, H., Abdel-Rahman, A., El-Bamby, M., Gamil, W., Rasheed, D. (2017). Insecticides Application and the Egyptian Cotton Leafworm, Spodoptera littoralis (Boisd.) Permanent Larvae. EKB Journal Management System, 10(7), 311-322. doi: 10.21608/eajb.2017.12117
Hassan F. Dahi; Abdel-Rahman G. Abdel-Rahman; Mahmoud M. El-Bamby; Walaa E. Gamil; Doaa S. Rasheed. "Insecticides Application and the Egyptian Cotton Leafworm, Spodoptera littoralis (Boisd.) Permanent Larvae". EKB Journal Management System, 10, 7, 2017, 311-322. doi: 10.21608/eajb.2017.12117
Dahi, H., Abdel-Rahman, A., El-Bamby, M., Gamil, W., Rasheed, D. (2017). 'Insecticides Application and the Egyptian Cotton Leafworm, Spodoptera littoralis (Boisd.) Permanent Larvae', EKB Journal Management System, 10(7), pp. 311-322. doi: 10.21608/eajb.2017.12117
Dahi, H., Abdel-Rahman, A., El-Bamby, M., Gamil, W., Rasheed, D. Insecticides Application and the Egyptian Cotton Leafworm, Spodoptera littoralis (Boisd.) Permanent Larvae. EKB Journal Management System, 2017; 10(7): 311-322. doi: 10.21608/eajb.2017.12117

Insecticides Application and the Egyptian Cotton Leafworm, Spodoptera littoralis (Boisd.) Permanent Larvae

Egyptian Academic Journal of Biological Sciences. A, Entomology
Article 30, Volume 10, Issue 7, November 2017, Page 311-322  XML PDF (319.54 K)
DOI: 10.21608/eajb.2017.12117
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Authors
Hassan F. Dahi1; Abdel-Rahman G. Abdel-Rahman2; Mahmoud M. El-Bamby3; Walaa E. Gamil1; Doaa S. Rasheed
1Plant Protection Research Institute, Agricultural Research Center, Doki, Giza, Egypt
2Plant Protection Department, Desert Research Center, Mataria, Cairo, Egypt
3Environment and Bio-Agriculture Department, Faculty of Agriculture, Al Azhar University, Cairo, Egypt
Abstract
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 4th 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. 
Keywords
Permanent larva; Spodoptera littoralis; insect growth regulators (IGR); Spinetoram; Molecular biology; Biochemical effects; Amino acids; genotype
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