Laboratory of Insect Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China.
Pest Manag Sci. 2011 Mar;67(3):370-6. doi: 10.1002/ps.2076. Epub 2010 Dec 14.
In order to investigate the extent of resistance of oriental fruit fly, Bactrocera dorsalis (Hendel), which is a widespread pest throughout tropical, subtropical and temperate fruit crops, 25 populations of this insect were collected from 13 sites in mainland China in 2007 and 2008. In addition, resistant strains were established that showed increasing development of resistance.
Compared with the susceptible strain, one population of B. dorsalis expressed high resistance (RR = 70.4-fold), 16 populations expressed medium resistance (11.5-fold < RR < 25.8-fold) and eight populations had low resistance or remained susceptible (1.4-fold < RR < 8.9-fold) to trichlorphon. As regards β-cypermethrin, one population showed high resistance (RR = 44.0-fold), nine populations expressed medium resistance (12.2-fold < RR < 28.4-fold), 14 populations expressed low or minor resistance (3.0-fold < RR < 9.7-fold) and one population remained susceptible (RR = 1.1-fold). As regards avermectin, five populations had developed high resistance (44.3-fold < RR < 104-fold), seven populations expressed medium resistance (11.4-fold < RR < 38.6-fold) and three populations expressed low or minor resistance (3.5-fold < RR < 5.6-fold). A continuous resistance selection in the laboratory strain showed that the resistance ratios to trichlorphon, β-cypermethrin and avermectin were 71.6-fold, 333-fold and 70.4-fold respectively.
The data provided a comprehensive survey of insecticide resistance in Bactrocera dorsalis in mainland China. All results suggested that early resistance management programmes should be established for restoring the efficacy of pesticide-based control measures.
为了研究东方果实蝇（Bactrocera dorsalis（Hendel））的抗药性程度，这种广泛分布于热带、亚热带和温带水果作物的害虫，于 2007 年和 2008 年从中国大陆的 13 个地点采集了 25 个种群。此外，还建立了抗性品系，显示出抗药性的不断增强。
与敏感品系相比，一个东方果实蝇种群表现出高抗药性（RR=70.4 倍），16 个种群表现出中抗药性（11.5 倍<RR<25.8 倍），8 个种群表现出低抗药性或仍保持敏感（1.4 倍<RR<8.9 倍）对三氯杀螨醇。至于β-氯氰菊酯，一个种群表现出高抗药性（RR=44.0 倍），9 个种群表现出中抗药性（12.2 倍<RR<28.4 倍），14 个种群表现出低或轻微抗药性（3.0 倍<RR<9.7 倍），一个种群仍保持敏感（RR=1.1 倍）。至于阿维菌素，五个种群已产生高抗药性（44.3 倍<RR<104 倍），七个种群表现出中抗药性（11.4 倍<RR<38.6 倍），三个种群表现出低或轻微抗药性（3.5 倍<RR<5.6 倍）。实验室品系的连续抗药性选择表明，三氯杀螨醇、β-氯氰菊酯和阿维菌素的抗性比分别为 71.6 倍、333 倍和 70.4 倍。
本研究提供了中国大陆东方果实蝇抗药性的全面调查。所有结果表明，应尽早制定抗药性管理计划，以恢复基于农药的防治措施的效果。
