الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 329 |  |  |
| | | from | 329 | | |
Abstract
The present study was carried out in an attempt to disclose the effect of three novel insecticides; Indoxacarb, Spinetoram and Methoxyfenozide on Spodoptera littoralis larvae under laboratory, field and semi-field conditions. The obtained data reveal that, Indoxacarb was the most toxic and effective insecticide on 2”d and 4th instar larvae of S. Jittoralis followed by Spinetoram and Methoxyfenozide. The 2”d larval instars were more susceptible towards the tested insecticides than the 4th ones. The main components of insect metabolites, acetyl cholinesterase, alanine aminotransferase, aspartate aminotransferase and acid, alkaline phosphatase significantly reduced due to larval treatment with the tested insecticides. Also, distinguishable patterns between control and treated samples were observed by the appearance and disappearance of certain protein fractions and differences in the activities of esterase isozymes. Field experiments proved that Indoxacarb was the best over Spinetoram and Methoxyfenozide in reducing number of larvae of the tested pest on the data basis at zero time and tenth day from spraying. A gradual decrease in mortality rates of 2”d and 4th instar larvae of S. littoralis were obtained with time elapse since application under semi-field conditions.