Document Details

Document Type : Article In Journal 
Document Title :
Combined effect of three insect growth regulators on the digestive enzymatic profiles of Callosobruchus maculatus (Coleoptera : Bruchidae)
التأثير المشترك لثلاثة من منظمات النمو الحشرية IGRs علي إنزيمات الهضم في
 
Subject : Combined effect of three insect growth regulators on the digestive enzymatic profiles of Callosobruchus maculatus (Coleoptera : Bruchidae) 
Document Language : English 
Abstract : Abstract Insect growth regulators (IGRs) are insecticides that mimic insect produced hormones by regulating the developmental process. They, generally, have little or no mammalian toxicity, and are considered reduced – risk insecticides that are often exempt from tolerance requirements of regulatory agencies. IGRs, especially, chlorfluazuron, hydroprene and hexaflumuron (benzoylphenylurea) are currently studied more and more because of possibility of their use in stored products protection. Many of IGRs compounds used in the control of insect pests are known to affect digestive enzymes. Chlorfluazuron, hydroprene and hexaflumuron are tested topically at three doses of 0.25%, 0.5% and 1% for chlorfluazuron and hydroprene and 0.5, 1 and 2 µg / ml of hexaflumuron to investigate its effects on the activities of the digestive enzymes protease, amylase and lipase in Callosobruchus maculatus larvae. Digestive enzyme activities were affected by IGRs individually and in combination. When combined, the effect was more sever at low concentration. There were statistically significant differences (P≤ 0.05) in enzyme activities in combined and individual treatments. The combination three IGRs cause a two – fold decrease in enzyme activity even at reduced concentration. Clear dose – response relationships were established with respect to enzyme activity . A synergistic effect of IGRs was found when combined in low doses. These effects are most pronounced in early instars. 
ISSN : 1110-0583 
Journal Name : Journal of the Egyptian Society of Parasitology 
Volume : 41 
Issue Number : 3 
Publishing Year : 1432 AH
2011 AD 
Article Type : Article 
Added Date : Wednesday, May 23, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
نجاة علي خاطرKhatter, Najat AliInvestigatorDoctoratenajat.khatter4@gmail.com

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