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Adult pollen beetles, Meligethes spp. (Coleoptera: Nitidulidae), were sampled from 27 and 35 oilseed rape (Brassica napus subsp. oleifera) fields scattered over Luxembourg in 2008 and 2009, respectively. Ten well-developed and active individuals from each field were transferred into 40-ml glass vials (4 replicates) with their interior surface being coated with the pyrethroid deltamethrin at rates...
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