Abstract
In vitro degradation of ^<14>C-malathion by Culex pipiens quinquefasciatus was studied. The optimum temperature of ^<14>C-malathion degradation in vitro by C. p. quinquefasciatus 900g supernatant fraction was 25℃. Most of ^<14>C-malathion degradation activity was found in the 105,000g supernatant fraction. ^<14>C-Malathion degradation activity of the 105,000g supernatant fraction was 20-35-fold higher in the resistant strain than in the susceptible one. ^<14>C-Malathion degradation activity was higher in adults than in larvae.
