Role of esterase enzymes in monitoring for resistance of California red scale, Aonidiella aurantii (Homoptera: Diaspididae), to organophosphate and carbamate insecticides.

@article{GraftonCardwell2004RoleOE,
  title={Role of esterase enzymes in monitoring for resistance of California red scale, Aonidiella aurantii (Homoptera: Diaspididae), to organophosphate and carbamate insecticides.},
  author={Elizabeth E. Grafton-Cardwell and Yuling Ouyang and Rebecka A Striggow and Julie A Christiansen and Christopher S Black},
  journal={Journal of economic entomology},
  year={2004},
  volume={97 2},
  pages={606-13}
}
Eighty-seven populations of California red scale, Aonidiella aurantii (Maskell), from the San Joaquin Valley of California were tested for insecticide resistance by using chlorpyrifos, methidathion, and/or carbaryl in a standard fruit-dip bioassay as well as for general esterase activity by using alpha-naphthyl acetate as a substrate in a colorimetric test. The percentage of individuals that survived a discriminating concentration of methidathion, chlorpyrifos, or carbaryl was significantly… CONTINUE READING