Document Detail


Toxicities and synergistic effects of several insecticides against the oriental fruit fly (Diptera: Tephritidae).
MedLine Citation:
PMID:  23786089     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
The oriental fruit fly, Bactrocera dorsalis (Hendel), is a serious insect pest that causes large losses to orchards globally. In this study, we conducted experiments to investigate the susceptibility of two populations (Kunming of Yunnan and Dongguan of Guangdong province) of B. dorsalis to nine insecticides. Bioassay results demonstrated that fipronil was the most effective insecticide, followed by phoxim, abamectin, triazophos, beta-cypermethrin, chlorpyrifos, deltamethrin, malathion, and imidacloprid against the Kunming of Yunnan province population, with LD50 values that ranged from 1.55 to 187.48 ng/fly. For the Dongguan of Guangdong province population, fipronil was also most toxic, followed by triazophos, phoxim, chlorpyrifos, abamectin, deltamethrin, beta-cypermethrin, malathion, and imidacloprid, with LD50 values from 2.07 to 439.11 ng/fly. The addition of synergists triphenyl phosphate, piperonyl butoxide, and diethyl maleate yielded different levels of synergistic effects on different insecticides against each population. However, the synergistic effects on the nine insecticides against the two populations are different. The treatment of a sublethal dose (LD2o) of beta-cypermethrin together with three synergists could induce increased specific activity of carboxylesterases at the beginning of exposure, followed by a decline within 24 h. The specific activity of carboxylesterases was higher in the fat body, midgut, and Malpighian tubules, suggesting these are important tissues for detoxification. Overall, the data developed in this study provide useful information for designing an insecticide management strategy for controlling this insect in the field.
Authors:
Jing-Jing Wang; Dong Wei; Wei Dou; Fei Hu; Wei-Feng Liu; Jin-Jun Wang
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of economic entomology     Volume:  106     ISSN:  0022-0493     ISO Abbreviation:  J. Econ. Entomol.     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-06-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985127R     Medline TA:  J Econ Entomol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  970-8     Citation Subset:  IM    
Affiliation:
Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, PR China. jjwang7008@yahoo.com
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