In vitro Detection of Acaricidal Resistance of Cattle Tick against Commercial Preparation of Deltamethrin and Cypermethrin in Three Villages of Udaipur District (Rajasthan)

Acaricidal resistance studies were carried out Department of Veterinary Parasitology in Udaipur to detect resistance status against commonly used commercial acaricides, 1.25% Butox® (Deltamethrin) and 10% w/v DERMEEZ® (Cypermethrin) against ticks collected from three villages (Vallabhnagar, Ranchorpura and Kikawas) of Udaipur, Rajasthan using Adult Immersion test (AIT) and Larval packet test (LPT). Recommended concentration of acaricides for AIT and LPT were used. Deltamethrin (0.075 g L-1) and Cypermethrin (0.05 g L-1) in AIT and Deltamethrin (0.06%) and Cypermethrin (0.2%) in LPT were used to evaluate acaricidal resistance. The overall analysis of data of the two tests with reference drug wise resistance for all three villages revealed that resistance to the deltamethrin was statistically higher than Cypermethrin. The drug wise results of AIT for deltamethrin for Vallabhnagar, Ranchorpura and Kikawas villages was 50%, 45% and 40% and for cypermethrin the resistance was 15%, 10% and 10% respectively. The results of LPT revealed that highest resistance in Vallabhnagar (27.5%), followed by Ranchorpura (21%) and Kikawas (19%) for deltamethrin while cypermethrin showed 19%, 11.5% and 9.5% resistance in Vallabhnagar, Ranchorpura and Kikawas, respectively.