Abstract
Larvae of pyrethroid-resistant AustralianHelicoverpa armigerahave enhanced esterase activity which is due to increased production of the enzymes. The most resistant individuals have approximately a 50-fold increase in esterase activity compared to susceptible populations. ResistantH. armigerahave additional esterase bands which are not detected in susceptible individuals. Increased esterase hydrolysis of 1-naphthyl acetate was correlated to the esfenvalerate resistance factor. Esterase bound readily to esfenvalerate. Homogenates of resistant insects hydrolyzed esfenvalerate and it is also likely that there was significant detoxification by sequestration. The prospect of biochemical assays for pyrethroid resistance and the possible genetic basis of the esterase resistance mechanism are discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
