作者: Lan Zhang , Xiwu Gao , Pei Liang
DOI: 10.1016/J.PESTBP.2007.03.001
关键词: Piperonyl butoxide 、 Abamectin 、 Cross-resistance 、 Biochemistry 、 Strain (chemistry) 、 Pyrethroid 、 Biology 、 Molecular biology 、 Housefly 、 Muscidae 、 Carboxylesterase
摘要: Abstract A housefly strain, originally collected in 1998 from a dump Beijing, was selected with beta-cypermethrin to generate resistant strain (CRR) order characterize the resistance and identify possible mechanisms involved pyrethroid resistance. The increased 2.56- 4419.07-fold CRR after 25 consecutive generations of selection compared laboratory susceptible (CSS). also developed different levels cross-resistance various insecticides within outside group such as abamectin. Synergists, piperonyl butoxide (PBO) S , -tributyl phosphorotrithioate (DEF), toxicity 21.88- 364.29-fold 15.33- 2.35-fold CSS respectively. Results biochemical assays revealed that carboxylesterase activities maximal velocities five naphthyl-substituted substrates were significantly higher than however, there no significant difference glutathione -transferase activity level total cytochrome P450 between strains. Therefore, our studies suggested play an important role strain.