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Your Position :Home->Past Journals Catalog->2016年53 No.6

Monitoring the resistance of field populations ofradysia odoriphaga Yangt Zhang in the main leek producing areas in China
Author of the article:DING Qian** WANG Yi-Ting** LIU Jun-Jie SHI Xue-Yan GAO Xi-Wu SONG Dun-Lun***
Author's Workplace:Department of Entomology, China Agricultural University, Beijing 100193, Chin
Key Words:Bradysia odoriphaga, susceptible toxicity baselines, resistance monitoring, the stomach-contact combination toxicity method
Abstract:[Objectives]  To establish susceptible toxicity baselines of Bradysia odoriphaga Yang et Zhang to 10 insecticides, and monitor the resistance of field populations of B. odoriphaga collected from 7 main leek producing areas in 4 provinces to 6 insecticides. [Methods]  The stomach-contact combination toxicity method was employed to determine the toxicity of insecticides to 3rd  instar larvae of B. odoriphaga. [Results]  We established susceptible toxicity baselines to several insecticides including, Neonicotinoids, Organophosphates, Pyrethroids, Insect Growth Regulators and Azoles. The results show that resistance of field populations of B. odoriphaga to organophosphate insecticides is very common in the 7 areas surveyed, and that populations in Zhengzhou, Henan had the highest resistance to chlorpyrifos and phoxim. With the exception of the Zhengzhou Henan population, which had moderate resistance to cypermethrin, all other populations surveyed were sensitive to cypermethrin. The resistance of B. odoriphaga populations to neonicotinoids were generally low or moderate, but the population from Lipo Shandong had high resistance to thiamethoxam. [Conclusion]  Susceptible toxicity baselines of B. odoriphaga to 10 insecticides were established and provide a reference for managing pesticide resistance in this pest.
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