Abstract

The current practice of treatment and control of tick vectors mainly depends on the useof synthetic acaricides which has far reaching effects including toxicity and drug resistance. Natural substances of plant origin constitute an important segment of alternative control strategies. Hence, this study was designed to investigate the acaricidal activity of ethanolic extracts of certain plants against Rhipicephalus sanguineus. The extracts of Cassia alata, Lantana camara and Calotropis gigantea exhibited good acaricidal activity at different dilutions. The study throws light into the possibility of developing alternate tick control measures based on ethnobotanicals.

Keywords : Ethanolic extracts, Acaricidal activity, R. sanguineus