Effect of three insect growth regulators (Chlorfluazuron, Tebofenozoid and pyriproxyfen) on fecundity of S. littoralis, histopathological and some biochemical aspects of moth ovary.

Abdel-Aal, Aziza E.

doi:10.21608/eajbsf.2012.17282

Effect of three insect growth regulators (Chlorfluazuron, Tebofenozoid and pyriproxyfen) on fecundity of S. littoralis, histopathological and some biochemical aspects of moth ovary.

Document Type : Original Article

Author

Aziza E. Abdel-Aal

Plant Protection Research Institute, A.R.C., Dokki-Giza, Egypt

10.21608/eajbsf.2012.17282

Abstract

The insecticidal and biological effects of three insect growth regulator (chlorfluazuron, Tebofenozoid and pyriproxyfen) were evaluated on 4^th instar larvae of Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae). Based on the LC₅₀ values Chorofluazuron is the more toxic to S. littoralis than that of the two other compounds. Female longevity, fecundity and fertility were significantly reduced at all treatments compared to control. Furthermore, different levels of significant changes in the total protein, carbohydrate contents of the female ovaries pre-treated as 4^th instar larvae by LC₅₀of used IGRs were recorded. Moreover, different abnormal histological structures of ovary were noticed.

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