Latest Cover

Online Office

Contact Us

Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
Address:Chaoyang District No. 1 Beichen West Road, No. 5 hospital,Beijing City,100101, China
Tel:+86-10-64807137
Fax:+86-10-64807137
Email:entom@ioz.ac.cn
Your Position :Home->Past Journals Catalog->2016年53 No.1

Selection for pyridaben, avermectin and abamectin+pyridaben resistance in Tetranychus truncatus Ehara
Author of the article:SONG Li-Wen** LI Miao-Wen SHEN Hui-Min***
Author's Workplace:Pratacultural College, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem, Ministy of Education, The Sino-U.S. Centers for Grazingland Ecosystem Sustainability Lanzhou 730070, China
Key Words:Tetranychus truncatus (Ehara), pyridaben, avermectin, abameetin+pyridaben, resistance
Abstract:

[ObjectivesTo clarify the development of pesticide resistance, and the stability of resistance, to pyridaben, avermectin and avermectin+pyridaben in Tetranychus truncatus Ehara. [Methods] Biological assays were carried out in a laboratory to detect selection for resistance to pyridaben, avermectin, and avermectin+pyridaben, in T. truncatusand the decline and recovery of resistance to these acaricides[Results] After 30 generations of selection for resistance to the three acaricides, the resistance index to each increased by 197.50,19.56 and 12.57 folds, respectively. The resistance of pyridaben resistant strain decreased very quickly in the absence of exposure to this acaricide, declining by 63.54% after 30 generations, whereas the resistance of avermectin resistant strain declined by 23.30% over the same number of generations. Resistance increased quickly after exposure to acaricidefor about 30 generations. Resistance of the pyridaben resistant strain rapidly increased by 58.47%, but the recovery rate of the avermectin resistant strain was only 22.86%. The recovery rate of an abameetin+pyridaben resistant strain was intermediate; 38.67%. [Conclusion] The resistance of T. truncatus to pyridaben was relatively unstable and sensitivity to this acaricide returned relatively quickly. Resistance to avermectin and abameetin+ pyridaben were more stable, and sensitivity to these acaricides was difficult to reestablishConsequently, avermectin should be used in rotation with the other insecticides to avoid cross-resistance and reduce selection pressure, thereby slowing the development of resistance in T. truncatus.

CopyRight©2024 Chinese Journal of Aplied Entomology