Articulo
Sensitivity assessment in the progeny of caligus rogercresseyi to emamectin benzoate
Fecha
2010Registro en:
0108-0288
D04I1255
WOS:000278355800003
WOS:000278355800003
0
Institución
Resumen
The loss of sensitivity to emamectin benzoate recorded in Caligus rogercresseyi in the Region X in Chile (41(sic)46'S72(sic)56'W; 43(sic)07'S73(sic)38'W) has been attributed to the exclusive use of this product to control sea lice for more than seven years. In order to evaluate the sensitivity through successive generations of lice, a study was carried out between August 2006 and April 2007. Seven successive generations from a presumably resistant population of C. rogercresseyi were cultivated in the laboratory without the selection pressure of the antiparasitic drug. Results of the bioassay applied to the progenies showed that there was no recovery of sensitivity over the seven inbred generations studied. This may point to a long-standing resistance problem against emamectin benzoate.