title: Resistance of the red poultry mite to pyrethroids in France.
abstract: The resistance of Dermanyssus gallinae, the red poultry mite, to a pyrethroid acaricide, permethrin, and to an organophosphate, dichlorvos, was examined on five French poultry farms which had experienced problems in controlling mite populations and on one farm with no problems. The concentration of permethrin required to kill 50 per cent of the mites on the five farms was between eight and 40 times the concentration required on the control farm. In contrast, no resistance to dichlorvos was detected. This is the first description of resistance to a pyrethroid in D gallinae in France.
authors.affiliation: Laboratory of Parasitology, Ecolo Vétéinaire de Lyon, Marcy L'Etoile, France.
authors.forename: F
authors.initials: F
authors.lastname: Beugnet
authors.forename: C
authors.initials: C
authors.lastname: Chauve
authors.forename: M
authors.initials: M
authors.lastname: Gauthey
authors.forename: L
authors.initials: L
authors.lastname: Beert
mesh_terms: D000818:Animals; D004006:Dichlorvos / Q000494:pharmacology*; D004353:Drug Evaluation, Preclinical; D004351:Drug Resistance; D005260:Female; D005602:France; D007306:Insecticides / Q000494:pharmacology*; D007928:Lethal Dose 50; D008297:Male; D008925:Mites / Q000187:drug effects*; D026023:Permethrin; D011200:Poultry; D011201:Poultry Diseases / Q000188:drug therapy; D011722:Pyrethrins / Q000494:pharmacology*
chemical_list: D007306:Insecticides; D011722:Pyrethrins; D026023:Permethrin; D004006:Dichlorvos