Selection of Amphitetranychus viennensis for resistance to spirodiclofen and cross-resistance to seven other acaricides
Author of the article:FENG Yun-Tao;GUO Xiao-Jun1, 2 YU Qin1, 2 ZHANG Run-Xiang;ZHANG Miao;SHI Gao-Chuan
Author's Workplace:Institute of Plant Protection, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China; Shanxi Key Laboratory of Integrated Pest Management in Agriculture, Taiyuan 030031, China; Institute of Cotton Research, Shanxi Academy of Agricultural Sciences, Yuncheng 044000, China
Key Words:Amphitetranychus viennensis Zacher, spirodiclofen, insecticide-resistance selection, cross-resistance
Abstract:
[Objectives] To assess the development of resistance, and cross-resistance, in Amphitetranychus viennensis Zacher to seven acaricides. [Methods] Resistance was evaluated using biological assays conducted in a laboratory. [Results] After selection for spirodiclofen resistance over 21 generations, the resistant strain had 11.65-fold resistance to that acaricide, 6.30-fold low level cross-resistance to etoxazole and 0.69-fold negative resistance to hexythiazox. Cross-resistance to abamectin, propargite and azocyclotin was 1.15, 1.25 and 1.78-fold, respectively, whereas resistance to pyridaben and bifenazate was 3.46 and 2.79-fold, respectively. [Conclusion] A. viennensis has the capacity to develop resistance to spirodiclofen, and cross-resistance to some other acaricides. These results provide a theoretical basis for the rational rotation of pesticides in apple orchards.