Survey of Rhipicephalus microplus resistance to ivermectin at cattle farms with history of macrocyclic lactones use in Yucatan, Mexico.

@article{PrezCogollo2010SurveyOR,
  title={Survey of Rhipicephalus microplus resistance to ivermectin at cattle farms with history of macrocyclic lactones use in Yucatan, Mexico.},
  author={Luis Carlos P{\'e}rez-Cogollo and Roger Ivan Rodriguez-Vivas and Genny T Ram{\'i}rez-Cruz and Jos{\'e} A Rosado-Aguilar},
  journal={Veterinary parasitology},
  year={2010},
  volume={172 1-2},
  pages={109-13}
}
Engorged females of Rhipicephalus microplus were collected from 30 cattle farms in Yucatan, Mexico to evaluate ivermectin resistance. The larval progeny of each tick sample were produced in laboratory and evaluated using the larval immersion test to obtain the larval mortality. Concentration-mortality data were subjected to probit analysis to generate lethal concentrations (LC). Resistance ratio (RR) of each tick sample was calculated by dividing its LC with that of an ivermectin-susceptible… CONTINUE READING

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