Ikbal Zaki Boctor

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Free amino acids in the haemolymph ofSpodoptera littoralis full-grown larvae infected with a nuclearpolyhedrosis virus were compared with those in the haemolymph of normal insects. Amino acids were separated by 2-dimensional paper chromatography and quantified colorimetrically. Most of the amino acids in the haemolymph of diseased full-grown larvae(More)
1. Carbohydrates in the haemolymph of full grown larvae, prepupae and pupae were separated and determined quantitatively by thin-layer chromatography. 2. Trehalose was present in the haemolymph of all studied stages and was shown to be the main sugar. Glucose was present at a very low level. 3. The amount of trehalose which was maximum in male and female(More)
Amino acids contained in extracts of adultEutetranychus orientalis were separated and determined quantitatively by 2-dimensional paper chromatography. 14 amino acids were identified. Asparagine, ornithine, histidine, lysine, aspartic acid, serine and glycine were the major components of the free amino acid pool, comprising 83.94% of the total content.
Gas-liquid chromatographic analysis of egg lipids during development of Spodoptera littoralis showed the presence of 13 fatty acids ranging in carbon chain length from caproic (C6:0) to linolenic acid (C 18:3). Palmitic, palmitoleic, stearic, oleic and linoleic acids composed over 90% of the total fatty acids. Palmitic acid was always the predominant fatty(More)
1. Allatectomy in newly-ecdysed last instar (6th instar) larvae of Spodoptera littoralis Boisduval led to a high accumulation of a more saturated fat in female moths obtained. 2. Phospholipids and triglycerides were tremendously decreased apparently due to the impairment of oögenesis. 3. Whereas cholesterol level in fat was diminished, it was not affected(More)
1. Gas-liquid chromatographic analyses of haemolymph lipids inSpodoptera littoralis Boisduval larvae showed the presence of C12:0, C14br, C14:0, C15:0, C15:1, C16:0, C16:1, C17:0, C18:0, C18:1, C18:2, and C18:3 fatty acids. 2. In all studied instars, palmitic acid was the predominant composing about 46–56 per cent of the total, while oleic acid was the(More)
The concentration of free amino acids in the haemolymph of non-diapausing and diapausing pupae ofHeliothis armigera was investigated. 20 amino acids were detected in the haemolymph of the studied stages. Asparagine, glutamine, cystine, ornithine, histidine and valine were the predominant free amino acids at all stages. The diapause resulted in increased(More)
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