[Variation in organophosphate and carbamate insecticide resistance in relation to esterase activity in Culex (c.) quinquefasciatus Say, 1823 (Diptera: Culicidae)].
We determined the existence of the resistance mechanism by means of the esterase enzymes in a Culex (C) quinquefasciatus stock established in the laboratory. Bioassays were performed with insecticides such as malathion and temephos (organophosphoric) and propoxur (carbomate); two cycles were completed during one year. Resistance to malathion was higher. The presence of esterase enzymes in this stock was determined by using synergits and starch gel and paper filter electrophoresis techniques.
Ortiz Losada
E
E
Instituto de Medicina Tropical Pedro Kouri.
Bisset Lazcano
J
J
Rodríguez Coto
M M
MM
Díaz Pantoja
C
C
D000818:Animals; D003465:Culex / Q000187:drug effects / Q000201:enzymology*; D004950:Esterases / Q000378:metabolism*; D007305:Insecticide Resistance; D007306:Insecticides / Q000494:pharmacology*; D008294:Malathion / Q000494:pharmacology; D001074:Propoxur / Q000494:pharmacology; D000002:Temefos / Q000494:pharmacology
D007306:Insecticides; D001074:Propoxur; D004950:Esterases; D000002:Temefos; D008294:Malathion
Variación de la resistencia a insecticidas organofosforados y carbamato y su relación con la actividad de las enzimas esterasas en Culex (C.) quinquefasciatus Say, 1823 (Diptera: Culicidae).