%0 Journal Article %T Susceptibilidad y mecanismos de resistencia de Tetranychus urticae (Acariformes: Tetranychidae) en rosal de invernaderos %A LANDEROS %A JER¨®NIMO %A AIL %A CARLOS ENRIQUE %A CERNA %A ERNESTO %A OCHOA %A YISA %A GUEVARA %A LUIS %A AGUIRRE %A LUIS ALBERTO %J Revista Colombiana de Entomolog¨ªa %D 2010 %I Sociedad Colombiana de Entomolog¨ªa %X the degree of resistance of a tetranychus urticae population, from production greenhouse roses, was determined for five miticides from different toxicological groups in comparison to a laboratory line. the presence of enzymes related to that resistance was also evaluated. several bioassays were conducted on the laboratory line to establish the slope of the concentration /mortality relationship. afterwards, the value of lc90 was selected and doubled to obtain a diagnostic concentration, in such a way that applying it to the field line would determine the degree of resistance. lastly, biochemical tests were conducted to detect enzymes related to the resistance. the highest levels of ¦Á and ¦Â-esterase and oxidases were presented in the field population. these results suggest that ¦Á and ¦Â-esterase and oxidases are involved in the resistance of the population studied. %K two-spotted spider mite %K esterases %K biochemical test. %U http://www.scielo.org.co/scielo.php?script=sci_abstract&pid=S0120-04882010000100002&lng=en&nrm=iso&tlng=en