In vitro diagnosis of the first case of amitraz resistance in Rhipicephalus microplus in Santo Tomé (Corrientes), Argentina.

@article{Cutull2013InVD,
  title={In vitro diagnosis of the first case of amitraz resistance in Rhipicephalus microplus in Santo Tom{\'e} (Corrientes), Argentina.},
  author={Christian Cutull{\'e} and L{\'e}onore Lovis and Beatriz In{\'e}s D'Agostino and Gabriel Gerardo Balbiani and Gabriel E. Morici and Daniel Citroni and Julio Reggi and Jorge Luis Caracostantogolo},
  journal={Veterinary parasitology},
  year={2013},
  volume={192 1-3},
  pages={296-300}
}
In Argentina, the cattle tick Rhipicephalus microplus has already developed resistance to organophosphates and synthetic pyrethroids. However, no cases of amitraz resistance have ever been recorded in this country despite its heavy use. A recent failure of amitraz to control ticks in a farm located in Santo Tomé, province of Corrientes, resulted in the collection of samples for acaricide resistance diagnosis. The modified Drummond adult immersion test (AIT) and the larval tarsal test (LTT) were… CONTINUE READING