Toxicity and Antifeedant Effects of Apricot Kernel Extract and Its Main Components against Cotton Leaf Worm, Spodoptera littoralis (Lepidoptera: Noctuidae) Larvae With Reference To Some Physiological Effects
M. Khamis, W., E. El-Desouky, S., A. Gad, A. (2016). Toxicity and Antifeedant Effects of Apricot Kernel Extract and Its Main Components against Cotton Leaf Worm, Spodoptera littoralis (Lepidoptera: Noctuidae) Larvae With Reference To Some Physiological Effects. EKB Journal Management System, 37(October-December), 637-646. doi: 10.21608/asejaiqjsae.2016.2542
Wael M. Khamis; Sahar E. El-Desouky; Abir A. Gad. "Toxicity and Antifeedant Effects of Apricot Kernel Extract and Its Main Components against Cotton Leaf Worm, Spodoptera littoralis (Lepidoptera: Noctuidae) Larvae With Reference To Some Physiological Effects". EKB Journal Management System, 37, October-December, 2016, 637-646. doi: 10.21608/asejaiqjsae.2016.2542
M. Khamis, W., E. El-Desouky, S., A. Gad, A. (2016). 'Toxicity and Antifeedant Effects of Apricot Kernel Extract and Its Main Components against Cotton Leaf Worm, Spodoptera littoralis (Lepidoptera: Noctuidae) Larvae With Reference To Some Physiological Effects', EKB Journal Management System, 37(October-December), pp. 637-646. doi: 10.21608/asejaiqjsae.2016.2542
M. Khamis, W., E. El-Desouky, S., A. Gad, A. Toxicity and Antifeedant Effects of Apricot Kernel Extract and Its Main Components against Cotton Leaf Worm, Spodoptera littoralis (Lepidoptera: Noctuidae) Larvae With Reference To Some Physiological Effects. EKB Journal Management System, 2016; 37(October-December): 637-646. doi: 10.21608/asejaiqjsae.2016.2542

Toxicity and Antifeedant Effects of Apricot Kernel Extract and Its Main Components against Cotton Leaf Worm, Spodoptera littoralis (Lepidoptera: Noctuidae) Larvae With Reference To Some Physiological Effects

Alexandria Science Exchange Journal
Article 10, Volume 37, October-December - Serial Number 4, December 2016, Page 637-646  XML PDF (269.69 K)
Document Type: Original Article
DOI: 10.21608/asejaiqjsae.2016.2542
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Authors
Wael M. Khamis1; Sahar E. El-Desouky1; Abir A. Gad2
1Dept. of Cotton Pesticides Bioassay Research, Plant Protection Research Institute, Agriculture Research Center, Al Sabhia, Alexandria, Egypt.
2Dept. of Applied Entomology, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria, Egypt.
Abstract
Toxicity and antifeedant effect of hexane apricot kernel extract (HEAK) and its gas chromatography-mass spectroscopy (GC-MS) identified fatty acid (FA) components palmitic acid (PA), Oleic acid (OL) and FA derivatives (Linoleic acid methyl ester (LAME)) were assessed against 2nd and 4th instar larvae of Spodoptera littoralis under laboratory conditions. Methoxyfenozide (Runner 24% SC®) was used as reference insecticide to (HEAK) and its components. The results were statistically analyzed by probit analysis to calculate (LC50) of mortality and the concentrations caused 50% of antifeedant index (AI50) after 24, 48 and 72 hrs of exposure. The results of toxic and antifeedant effects showed the definite prevalence of HEAK versus its FA components against the two instar larvae of S. littoralis throughout 72 hrs of exposure.  However the toxic initiation of the extract and its components paced methoxyfenozide by the first 24 hrs of exposure, methoxyfenozide still owned a superior toxicity and antifeedant response on the treated larvae. This work has been associated with some physiological tests including haemocytes count and corpora allata (CA) activity.
Keywords
apricot kernel extract; Spodoptera littoralis; Methoxyfenozide; Haemocytes; corpora allata; fatty acids
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