Laboratory of Agrozoology, Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium.
Pest Manag Sci. 2011 Nov;67(11):1424-33. doi: 10.1002/ps.2191. Epub 2011 May 5.
Spider mites are important crop pests that rapidly develop resistance to acaricides. To investigate whether acaricide resistance is a threat to greenhouse rose culture in the Netherlands, the susceptibility of 15 strains of Tetranychus urticae was tested to several currently used acaricides, and resistance mechanisms were investigated.
Although the observed levels of susceptibility differed between strains and acaricides, resistance was detected in most strains. The activity of detoxifying enzymes was significantly increased in most field-collected strains, and a number of amino acid substitutions known to be involved in resistance were detected.
Resistance levels to traditional acaricides such as bifenthrin and abamectin were prominent, and might result in control failure under field conditions. Resistance to more recently registered compounds was detected in several populations. Resistance levels were generally unstable in the laboratory without selection pressure. The toxicological, biochemical and genetic data in this study will be essential in devising an efficient resistant management for Dutch rose culture.
叶螨是重要的农作物害虫，它们会迅速对杀螨剂产生抗药性。为了研究杀螨剂抗性是否对荷兰温室玫瑰种植构成威胁，对 15 株桃蚜进行了几种目前使用的杀螨剂的敏感性测试，并研究了其抗性机制。
尽管不同菌株和杀螨剂之间的敏感性水平存在差异，但在大多数菌株中都检测到了抗性。在大多数田间采集的菌株中，解毒酶的活性显著增加，并且检测到了一些已知与抗性有关的氨基酸取代。
对传统杀螨剂（如联苯菊酯和阿维菌素）的抗性水平较高，在田间条件下可能导致防治失败。在一些种群中检测到了对最近注册的化合物的抗性。在没有选择压力的情况下，实验室中的抗性水平通常不稳定。本研究中的毒理学、生化和遗传学数据对于制定荷兰玫瑰种植的有效抗性管理策略至关重要。
