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- Title
西花蓟马抗噻虫胺种群对杀虫剂的 交互抗性及机制.
- Authors
颜改兰; 王圣印
- Abstract
Clothianidin, belonging to nconicotinoid insecticide with systemic and contact mechanisms, is used to control the invasive pest Frankliniella occidentalis. To identify the resistance risk, we examined the cross-resistance to multiple insecticide, and mechanisms of clothianidin resistance population of F. occidentalis. The results showed that F. occidentalis developed a high level of resistance to clothianidin (56. 8-fold) after selecting for 45 generations. The resistant population of F. occidentalis had medium level of cross-resistance to thiamethoxam, imidacloprid, chlorpyrifos, cyhalothrin and emamectin benzoate (18.6>RR50> 11.3), and the low level of cross-resistance to phoxim and methomyl, but no cross-resistance to chlorfenapyr and spinosad. The synergists piperonyl butoxide (PBO) and triphenyl phosphate (TPP) had significant synergistic effects on clothianidin in killing the resistant population (CL), Yunnan wild population (YN) and susceptible population (S). Compared with the sensitive population, the CL populations had significantly increased activity, of mixed-functional oxidases P450 (3.6-fold), b5 (2.9-fold) and O-demethylase (4.9-fold), and carhoxylesterase (2.5-fold), with no significant difference in the activities of glutathione S-transferases, among CL and S populations. The results highlight the role of increasing mixed-functional oxidases and carboxylesterase in the resistance of F. occidentalis to clothianidin.
- Subjects
YUNNAN Sheng (China); EMAMECTIN benzoate; FRANKLINIELLA occidentalis; CLOTHIANIDIN; PEST control; THIAMETHOXAM; INSECTICIDES; IMIDACLOPRID; NEONICOTINOIDS
- Publication
Yingyong Shengtai Xuebao, 2020, Vol 31, Issue 10, p3282
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.202010.034