1Department of Animal Biotechnology
Department of Veterinary Parasitology, Madras Veterinary College, TANUVAS, Chennai-600 007, India
*Part of M.V.Sc. thesis submitted to TANUVAS, Chennai
Engorged female Rhipicephalus sanguineus ticks were collected from dogs with a previous history of acaricidal treatment with synthetic pyrethroids (SP) from small animal clinics, Madras Veterinary College, Chennai. The collected ticks were subjected to adult immersion test (AIT) with discriminating dose of 0.075 g per litre of deltamethrin and flumethrin as recommended by FAO (1999). Three trials were conducted using 90 ticks. The results of AIT found that the ticks collected at random from dogs were resistant to SP. Deltamethrin and flumethrin treated ticks revealed an average 64.72 and 59.35 per cent resistance, respectively.
AIT, Deltamethrin, Engorged female ticks, Flumethrin, Resistance, Rhipicephalus sanguineus
