Toxicity Assessment of Calotropis procera and Zygophyllum simplex Leaf Extracts on the Desert Locust Schistocerca gregaria (Orthoptera acrididae) PDF

Keywords

nymphal stars, desert locust, leaf extract

Abstract

The present work was conducted to study the effect of Calotropis procera and Zygophyllum simplex extracts on the 4th and 5th nymphal instars of the desert locust Schistocerca gregaria. The leaf extract of C. procera was significantly more effective on the the 4th and 5th nymphal instars than Z. simplex extract. The two plant extracts caused feeding inhibition with slightly increased nymphal duration. On the other hand, adult longevity was decreased and the preoviposition period of females was increased, particularly by increasing concentration of C. procera and Z. simplex extracts. Also these extracts affected different morphogenic abnormalities in the adult stages as will as nymphal instars