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Online Journal of Veterinary Research©
Volume 23 (11):1070-1074, 2019.
Effect of aqueous leaf extracts of Azadirachta indica, M. indica, P. longifolia,
A. squamosal and F. benghalensis on Rhipicephalus microplus ticks.
A. Varadharajan*, S. Kothandaraman and R. Gnanasekar
Division of Animal Husbandry, Faculty of Agriculture, Annamalai University, Annamalai Nagar – 608 002, Tamil Nadu, India.
Varadharajan A, Kothandaraman S, Gnanasekar R., Effect of aqueous leaf extracts of Azadirachta indica, M. indica, P. longifolia, A. squamosal, and F. benghalensis on Rhipicephalus microplus ticks, Onl J Vet Res., 23 (11):1070-1074, 2019. Tick infestations pose a major threat to livestock. The main tick species found in domestic animals of India is Rhipicephalus [Boophilus] microplus. Plant extracts can inhibit growth of ticks. We evaluate effect of 10mg/ml Azadiracta indica (AI), Mangifera indica (MI), Polyalthia longifolia (PL), Annona squamosal (AS), and Ficus benghalensis (FB) leaf aqueous extract drops on time (s) for 100% mortality of Rhipicephalus microplus ticks. Compared with water controls (no tick mortality) those treated with AI died 180, MI 210, PL 170, AS 180 and FB 210 seconds. Combinations of 10mg/ml (total dose) AI, AS with PL 38, FB, MI with PL 42, and AI, AS, PL, FB with MI 30 seconds. Our findings suggest that our individual plant extracts killed all Rhipicephalus microplus ticks within 170-210 seconds whereas combinations at 30-42 seconds.
Key words: cattle tick control, Rhipicephalus [Boophilus] microplus, Herbal extracts.