2017•Journal of Entomology and Zoology StudiesOpen access

Acaricidal resistance in Rhipicephalus (Boophilus) Microplus ticks infesting cattle of Andhra Pradesh

Kumar Ss, Rayulu Vc, Rao Ks, Kumar Nv

Abstract

The present study was conducted during the period from January to July, 2015 to determine the status of resistance in Rhipicephalus (Boophilus) microplus ticks infesting cattle in different parts of Andhra Pradesh to commonly used acaricides viz., deltamethrin, cypermethrin and amitraz. Larval Packet Test (LPT) bioassay revealed the highest LC50 values for both deltamethrin and cypermethrin against R. (B.) microplus ticks collected from Chittoor (40.05 ppm and 88.68 ppm) followed by Prakasam (12.59 ppm and 36.58 ppm) and YSR Kadapa (8.10 ppm and 30.82 ppm), respectively. The tick populations of Chittoor showed significantly (P

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Key concepts: Amitraz, Deltamethrin, Cypermethrin, Acaricide, Rhipicephalus, Tick, Biology, Veterinary medicine