title: Insecticide-resistant pollen beetles (Meligethes aeneus F) found in Danish oilseed rape (Brassica napus L) fields.
abstract: The pollen beetle is the most important pest in Danish oilseed rape fields. In 2001, we screened a broad range of pollen beetle populations for pyrethroid and dimethoate resistance. A standard dip-test was used to test insecticide resistance in 18 populations collected from oilseed winter and spring rape fields. The beetles were treated with four different insecticides: the pyrethroids tau-fluvalinate, lambda-cyhalothrin and esfenvalerate, and the organophosphate dimethoate. The results show that up to 99% of the pollen beetles survived Danish standard doses of pyrethroids and up to 36% of the beetles survived standard doses of dimethoate.
authors.affiliation: Danish Institute of Agricultural Sciences, Research Centre Flakkebjerg, DK-4200 Slagelse, Denmark. LarsM.Hansen@agrsci.dk
authors.forename: Lars Monrad
authors.initials: LM
authors.lastname: Hansen
mesh_terms: D000818:Animals; D029688:Brassica napus / Q000469:parasitology*; D001517:Coleoptera / Q000254:growth & development / Q000378:metabolism*; D003718:Denmark; D004117:Dimethoate / Q000378:metabolism; D007305:Insecticide Resistance; D007306:Insecticides / Q000378:metabolism*; D009570:Nitriles; D011722:Pyrethrins / Q000378:metabolism*; D012621:Seasons
chemical_list: D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; C034227:fluvalinate; C037304:cyhalothrin; D004117:Dimethoate; C017690:fenvalerate