In Vitro Licicidal activity of Different Extracts of Annona Squamosa Linn. (Annonaceae) Leaf against Goat-Lice Damalinia Caprae (trichodectidae).

In the present study dried leaves of A.squamosa were subjected to exhaustive sequential solvent extraction by using n-Hexane, Chloroform, Methanol and Distill water respectively. All four fractions were studied for in vitro licicidal activity against Goatlice Damalinia caprae at concentrations 0.1, 1 and 10% w/w. Methanol and aqueous fractions not showed the activity. Licicidal activity of n-Hexane and Chloroform fractions at concentration 10% w/w was found comparable to Lindane 1%solution. The study confirmed that A. squamosa leaves have licicidal activity and the active constituents are predominately soluble in n-Hexane.