| comparisons of malathion susceptibility, target sensitivity, and detoxification enzyme activity in nine field populations of oxya chinensis (orthoptera: acrididae). | the malathion susceptibility, acetylcholinesterase (ache) sensitivity, and the activity of selected detoxification enzymes including general esterase (est) and glutathione s-transferase (gst) were compared among field populations of the grasshopper oxya chinensis (thunberg) (orthoptera: acrididae) collected from nine regions of china. bioassay results showed that these populations had various levels of the susceptibility to malathion with the ldo values ranging from 1.4- to 22.6-fold compared wi ... | 2007 | 17849895 |