title: The efficacy of four avermectins on the synanthropic mite Lepidoglyphus destructor under laboratory conditions.
abstract: The effect of four avermectins on the population growth of pest mite Lepidoglyphus destructor was tested in laboratory experiments. The avermectins (abamectin, doramectin, emamectin-benzoate and ivermectin) of analytical purity were incorporated into an experimental diet at the same molar concentrations, ranging from 0.16 to 8 nmol/3 g of diet. Using an initial population of 50 mites, the population growth was recorded after 21 days at 85 % relative humidity and 25 °C; 12 repeats were performed per avermectin concentration and control. The diets containing the avermectins successfully suppressed the population growth of L. destructor. The EC(50) recalculated to ng of substance per g of diet showed different suppressive effects of the avermectins: doramectin (181 ng/g diet), abamectin (299 ng/g diet), emamectin-benzoate (812 ng/g diet) and ivermectin (992 ng/g diet). Of the tested avermectins, abamectin is registered for the control of phytophagous mites and ivermectin against parasitic mites, i.e., Psoroptes ovis. Although emamectin-benzoate and ivermectin were less effective on L. destructor, all of the tested avermectins are highly suitable compounds for the control of synanthropic mites.
authors.affiliation: Department of Stored Product Pest Control and Food Safety, Crop Research Institute, Drnovska 507, 16106, Prague 6, Ruzyne, Czech Republic. arachnid@centrum.cz
authors.forename: Tomas
authors.initials: T
authors.lastname: Erban
authors.forename: Jakub
authors.initials: J
authors.lastname: Rybansky
authors.forename: Jan
authors.initials: J
authors.lastname: Hubert
mesh_terms: D056810:Acaricides / Q000008:administration & dosage / Q000494:pharmacology*; D000818:Animals; D004305:Dose-Response Relationship, Drug; D007559:Ivermectin / Q000031:analogs & derivatives* / Q000494:pharmacology; D008925:Mites / Q000187:drug effects*; D012098:Reproduction / Q000187:drug effects
chemical_list: D056810:Acaricides; D007559:Ivermectin; C019264:avermectin