Acaricidal effects of fenvalerate and cypermethrin against Rhipicephalus (Boophilus) annulatus.
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.
Department of Veterinary Parasitology, College of Veterinary and Animal Sciences, Pookode, Lakkidi, P.O., Wayanad, Kerala-673576, India.
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Ravindran
Department of Veterinary Parasitology, College of Veterinary and Animal Sciences, Pookode, Lakkidi, P.O., Wayanad, Kerala-673576, India.
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Ajith Kumar
Department of Veterinary Pharmacology and Toxicology, College of Veterinary and Animal Sciences, Pookode, Lakkidi, P.O., Wayanad, Kerala-673576, India.
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Suresh
Department of Veterinary Parasitology, College of Veterinary and Animal Sciences, Pookode, Lakkidi, P.O., Wayanad, Kerala-673576, India.
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Amithamol
Department of Veterinary Parasitology, College of Veterinary and Animal Sciences, Pookode, Lakkidi, P.O., Wayanad, Kerala-673576, India.
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Sunil
Department of Veterinary Parasitology, College of Veterinary and Animal Sciences, Pookode, Lakkidi, P.O., Wayanad, Kerala-673576, India.
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Adarshkrishna
Department of Veterinary Parasitology, College of Veterinary and Animal Sciences, Pookode, Lakkidi, P.O., Wayanad, Kerala-673576, India.
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Chithra
Department of Veterinary Parasitology, College of Veterinary and Animal Sciences, Pookode, Lakkidi, P.O., Wayanad, Kerala-673576, India.
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Jyothimol
Division of Parasitology, Indian Veterinary Research Institute, Izatnagar, UP 243 122, India.
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Ghosh
Department of Veterinary Parasitology, College of Veterinary and Animal Sciences, Pookode, Lakkidi, P.O., Wayanad, Kerala-673576, India.
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Juliet
D056810:Acaricides / Q000494:pharmacology*; D000818:Animals; D001681:Biological Assay; D009570:Nitriles / Q000494:pharmacology*; D011722:Pyrethrins / Q000494:pharmacology*; D048494:Rhipicephalus / Q000187:drug effects*; D016019:Survival Analysis; D013997:Time Factors; D015053:Zygote / Q000187:drug effects
D056810:Acaricides; D009570:Nitriles; D011722:Pyrethrins; C017160:cypermethrin; C017690:fenvalerate