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Some biological and biochemical effects of cidtin synthesis inhibitors on pink bollworm Pectinophora gossypiella (SAUNDERS) [electronic resource].

By:

Kandil, Mervat A

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Language: English Summary language: Arabic Description: p.1991-2002Other title:

دراسات بيولوجية وبيوكميائية لبعض مانعات الإنسلاخ علي دودة اللوز القرنفلية [Added title page title]

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Annals of agricultural science, Moshtohor, 2005 v.43 (4) [electronic resource].

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In: Annals of Agricultural Science, Moshtohor 2005.v.43(4)Summary: The effectiveness of two compounds diflubenzuron (Dirnilin) and chlorfluazuron (Atabron 5% EC) belonging to insect growth regulators (IGR) groups, against newly hatched larvae of pink bollwonn (pBW), Pectinophora gossypiella (Saund.) was tested under laboratory condition of 27˚± 1˚C and 75-80% R. H. LC50 was determined (0.0423) for Dimilin and (0.1961) for Atabron. Also, the effect of the two (IGR) compounds on some biological aspects ofPBW was studied. Insect growth regulators prolonged the larval duration by 21.62& 23.76 for Dimilin & Atabron, respectively, than control. Also, increased the pupal period and duration of immature stages. Two IGR caused shortened the oviposition period, where, this period estimated by 12.06 and 10.8 days for Dirnilin & Atabron, than control. Also, effect on some other biological characters, such as total deposited eggs / female, hatchability, fecundity and longevity of emerged female. Results indicated that the two tested IGR compound (Dirnilin & Atabron) increased pre-oviposition period, but caused shortness of female oviposition period and adult longevity. Also, they decreased the average number of deposited eggs /female. Also some biochemical studies were carried out on larvae treated by LCso Dimilin & Atabron to detennination activities of enzymes GOT & GPT, carbohydrate hydrolyzing enzymes and total nutrient content, i.e. proteins, lipids and carbohydrates. Data revealed that treated larvae of PBW by Dirnilin & Atabron caused increased total lipids, transaminase enzymes GOT & GPT, carbohydrate hydrolyzing enzymes (Invertase & Trehalase). While, cause decreased in total soluble proteins and the activity of carbohydrate hydrolyzing enzymes Amylase.

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The effectiveness of two compounds diflubenzuron (Dirnilin) and chlorfluazuron (Atabron 5% EC) belonging to insect growth regulators (IGR) groups, against newly hatched larvae of pink bollwonn (pBW), Pectinophora gossypiella (Saund.) was tested under laboratory condition of 27˚± 1˚C and 75-80% R. H. LC50 was determined (0.0423) for Dimilin and (0.1961) for Atabron. Also, the effect of the two (IGR) compounds on some biological aspects ofPBW was studied. Insect growth regulators prolonged the larval duration by 21.62& 23.76 for Dimilin & Atabron, respectively, than control. Also, increased the pupal period and duration of immature stages. Two IGR caused shortened the oviposition period, where, this period estimated by 12.06 and 10.8 days for Dirnilin & Atabron, than control. Also, effect on some other biological characters, such as total deposited eggs / female, hatchability, fecundity and longevity of emerged female. Results indicated that the two tested IGR compound (Dirnilin & Atabron) increased pre-oviposition period, but caused shortness of female oviposition period and adult longevity. Also, they decreased the average number of deposited eggs /female. Also some biochemical studies were carried out on larvae treated by LCso Dimilin & Atabron to detennination activities of enzymes GOT & GPT, carbohydrate hydrolyzing enzymes and total nutrient content, i.e. proteins, lipids and carbohydrates. Data revealed that treated larvae of PBW by Dirnilin & Atabron caused increased total lipids, transaminase enzymes GOT & GPT, carbohydrate hydrolyzing enzymes (Invertase & Trehalase). While, cause decreased in total soluble proteins and the activity of carbohydrate hydrolyzing enzymes Amylase.

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