Acaricidal effects of fenvalerate and cypermethrin against Rhipicephalus (Boophilus) annulatus

R Ravindran, K G Ajith Kumar, N N Suresh, K K Amithamol, A R Sunil, T P Adarshkrishna, N D Chithra, G Jyothimol, S Ghosh, S Juliet
2014 Tropical biomedicine  
The acaricidal effects of two most commonly used acaricides viz., fenvalerate and cypermethrin against Rhipicephalus (Boophilus) annulatus were studied using Adult Immersion Test (AIT). The LC50 values observed for fenvalerate and cypermethrin were 1570 ppm and 184 ppm respectively. The death of ticks was not an immediate process. Fenvalerate caused death only after 7 days while cypermethrin after 5 days of treatment. The eggs laid by treated ticks did not hatch at all concentrations tested.
pmid:25382471 fatcat:c3u2rngpcnbnhcf63kptvrxup4