Invasive Species Compendium

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Abstract Full Text

Evolution of knock-down resistance to pyrethroids in grain aphids (Sitobion avenae) in the UK.


We report the discovery of the target site mechanism termed knock-down resistance (kdr) to pyrethroids in the grain aphid, Sitobion avenae, in the UK. A DNA-based diagnostic designed specifically to identify the kdr mutation was developed and used to screen samples of grain aphids collected from different sites in England. This showed that the frequency of kdr has increased steadily through 2012 and by the autumn had reached greater than 50% of the aphids tested in certain areas.