title: Assessment of susceptibility of the poultry red mite Dermanyssus gallinae (Acari: Dermanyssidae) to some acaricides using an adapted filter paper based bioassay.
abstract: A previously described bioassay was modified to assess the response of the poultry red mite, an important ectoparasite of fowl, to a selected group of acaricides. The adapted bioassay is simple to use, escape-proof and provides data that can be subjected to probit analysis. The reproducibility of the method was assessed by three tests with alpha-cypermethrin against a reference strain, which produced dose-response lines that did not differ significantly (chi(2)=1.39, 2 d.f., p=0.50), and had a derived common slope of 1.89. In addition, a limited evaluation study enabled assessment of response to commercial formulations of bifenthrin, bifenthrin+malathion and cypermethrin by field populations of the poultry red mite.
authors.affiliation: Central Science Laboratory, Department for Environment, Food and Rural Affairs, Sand Hutton, York Y041 1LZ, UK. b.thind@csl.gov.uk
authors.forename: B B
authors.initials: BB
authors.lastname: Thind
authors.forename: H L
authors.initials: HL
authors.lastname: Ford
mesh_terms: D000818:Animals; D001681:Biological Assay / Q000379:methods*; D004305:Dose-Response Relationship, Drug; D007306:Insecticides / Q000494:pharmacology; D008294:Malathion / Q000494:pharmacology*; D008925:Mites / Q000187:drug effects*; D011722:Pyrethrins / Q000494:pharmacology*
chemical_list: D007306:Insecticides; D011722:Pyrethrins; C017160:cypermethrin; C099952:bifenthrin; D008294:Malathion