TY - JOUR ID - 215049 TI - Biochemical and Physiological Reactions for Field Strain of Cotton Leafworm, Spodoptera littoralis (Boisd.) as An Exposure-Response to Temperature Under Climatic Change JO - Egyptian Academic Journal of Biological Sciences. C, Physiology and Molecular Biology JA - EAJBSC LA - en SN - 2090-0767 AU - Dahi, Hassan F. AU - Salman, Ahmed M. A. AU - Fouad, Hany A. AU - Elgedawy, Abdel Rahman M. H. AD - Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt AD - Plant Protection Department, Faculty of Agriculture, Sohag University, Egypt Y1 - 2022 PY - 2022 VL - 14 IS - 1 SP - 91 EP - 106 KW - Cotton leafworm KW - Temperature KW - biochemical parameters KW - proteins KW - lipids KW - carbohydrates KW - free amino acids KW - GST KW - GOT KW - AChE DO - 10.21608/eajbsc.2022.215049 N2 - It is important to understand the effects of temperatures on Egyptian cotton leafworm Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) which damages a wide variety of crops in the Middle East and is one of the major economic pests of cotton in Egypt. Therefore, the investigating was designed to study the effect of fluctuation temperatures on the field strain in Abnob city, Assuit Governorate during the 2017 and 2018 cotton growing seasons. On the other hand, the results compared with the laboratory strain under constant temperature (25°C). The biochemical parameters were measured on the 4th larval instars for both strains. Biochemical analyses were performed to determine the effects of fluctuation and constant temperatures on field and laboratory strain on total proteins, lipids, carbohydrates and free amino acids as well as metabolic digestive, neural and detoxification enzymes. It's clear from the results that the GST, GOT, AchE, Alpha esterases, Beta esterases as well as, the activity levels were increased significantly by field strain. While the free amino acids, total proteins, proteases, lipases, amylase were decreased significantly by field strain and no significant changes were detected between field and laboratory strains in total carbohydrates, total lipids, trehalase and GPT. UR - https://eajbsc.journals.ekb.eg/article_215049.html L1 - https://eajbsc.journals.ekb.eg/article_215049_51e43dc33648f0bd7fb387692b58603c.pdf ER -