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Arquivo Brasileiro de Medicina Veterinária e Zootecnia

versión impresa ISSN 0102-0935
versión On-line ISSN 1678-4162


BICALHO, K.A.; FERREIRA, F.; BORGES, L.M.F.  y  RIBEIRO, M.F.B.. In vitro evaluation of the effects of some acaricides on life stages of Rhipicephalus sanguineus (Acari: Ixodidae). Arq. Bras. Med. Vet. Zootec. [online]. 2001, vol.53, n.5, pp.548-552. ISSN 0102-0935.

The action of five acaricides was evaluated on eggs, larvae, nymphs and adults of the ixodid tick Rhipicephalus sanguineus. The acaricides tested were: high cis-cypermethrin (0.01%) + DDVP (0.11%), coumaphos (0.05%), deltamethrin (0.0025%), amitraz (0.025%) and cypermethrin (0.015%). Eggs treated with high cis-cypermethrin and cypermethrin showed eclosion inhibitions of 72.1% and 67.3%, respectively, whereas coumaphos was much less effective (only 11.7%). Except for coumaphos, which resulted in 63.3% and 80.0% mortality of nymphs and unfed females, respectively, all compounds tested killed 100% of all tick stages to which they were exposed.

Palabras clave : Tick; Rhipicephalus sanguineus; acaricide; dog.

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