[Attempt to attract Amblyomma variegatum (Acarina:Ixodina) on cattle previously treated with aggregation-fixation pheromones and a pyrethrinoid acaricide].

The application of synthetic pheromonal aggregation-attachment compounds or male tick extracts on certain sites of the body of bull calves reared on infested pastures did not induce any attraction of free adults on these sites. Previously attached males were more attractive than synthetic pheromones or natural extracts. Very small amounts of flumethrin poured directly on testicles or on the dewalp induced a large decrease in the infestation of these sites.