| first report of a rhipicephalus microplus tick population multi-resistant to acaricides and ivermectin in the mexican tropics. | we document the presence of a rhipicephalus microplus tick population resistant to acaricides (organophosphates (op), synthetic pyrethroids (sp), amitraz) and macrocyclic lactones (ml) (ivermectin). engorged females of r. microplus were collected from a cattle farm in veracruz, mexico, to evaluate acaricide and ivermectin resistance. the modified larval packet test (lpt) was used to detect op (chlorpiriphos and diazinon) and sp (flumethrin, deltamethrin and cypermethrin) resistance and the larva ... | 2011 | 21824728 |