The cabbage stem flea beetle, Psylliodes chrysocephala L. is a major pest of winter oilseed rape in several European countries. Traditionally, neonicotinoid and pyrethroid insecticides have been widely used for control of P. chrysocephala, but in recent years, following the withdrawal of neonicotinoid insecticide seed treatments, control failures have occurred due to an over reliance on pyrethroids. In line with previous surveys, UK populations of P. chrysocephala were found to exhibit high levels of resistance to the pyrethroid lambda-cyhalothrin. This resistance was suppressed by pre-treatment with the cytochrome P450 inhibitor PBO under laboratory conditions, suggesting that the resistance has a strong metabolic component. The L1014F (kdr) mutation in the voltage-gated sodium channel, which confers relatively low levels (10–20 fold) of resistance to pyrethroids, was also found to be widespread across the UK regions sampled, whereas the L925I (s-kdr) mutation was much less common. The current survey also suggests that higher levels of pyrethroid resistance have spread to the North and West of England, and that resistance levels continue to remain high in the South East.

中文翻译：

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调查英国卷心菜茎跳甲虫（Psylliodes chrysocephala）对拟除虫菊酯的抗性状况

甘蓝茎跳蚤甲虫 Psylliodes chrysocephala L. 是几个欧洲国家冬季油菜的主要害虫。传统上，新烟碱类和拟除虫菊酯类杀虫剂已被广泛用于防治金头假单胞菌，但近年来，随着新烟碱类杀虫剂种子处理的退出，由于过度依赖拟除虫菊酯类农药而导致防治失败。与之前的调查一致，英国的 P. chrysocephala 种群被发现对拟除虫菊酯 λ-三氯氟氰菊酯表现出高水平的抗性。在实验室条件下用细胞色素 P450 抑制剂 PBO 预处理可以抑制这种抗性，这表明抗性具有很强的代谢成分。电压门控钠通道中的 L1014F (kdr) 突变，对拟除虫菊酯具有相对低水平（10-20 倍）抗性的突变也被发现在英国采样地区普遍存在，而 L925I (s-kdr) 突变则不太常见。目前的调查还表明，较高水平的拟除虫菊酯抗药性已蔓延至英格兰北部和西部，而东南部的抗药性水平继续居高不下。