Toxicity and eYcacy of selected pesticides and new acaricides to stored product mites (Acari: Acaridida)

Stored product mites can often infest stored products, but currently there is little information regarding the eYcacy of pesticides that can be used for control. In this study we evaluated several common pesticides formulated from single active ingredients (a.i.) or commercially available mixtures (chlorpyrifos, deltamethrin, beta-cyXuthrin, and a combination of deltamethrin and S-bioallethrin), plus an acaricide composed of permethrin, pyriproxyfen and benzyl benzolate, for eYcacy against Acarus siro, Tyrophagus putrescentiae, and Aleuroglyphus ovatus. The pesticides were incorporated into the mite diets in a dose range of 10–1000 g a.i. g¡1 diet. Concentrations for suppression of 50 and 90% population growth and eradication (rC0) of mites were Wt to linear regression models. None of the tested pesticides gave complete eradication of A. siro, which was the most tolerant of the three mite species tested. The most eVective pesticide AllergoV 175 CS was a combination J. Hubert (&) · V. Stejskal Research Institute of Crop Production, Drnovská 507, Praha 6, Ruzyne, 16106, Czech Republic e-mail: [email protected] J. Hubert DDD servis, Libunská 104/313, Praha 4, Pisnice, 14200, Czech Republic Z. Munzbergova Institute of Botany, Academy of Sciences of the Czech Republic, Pruhonice, 25243, Czech Republic Z. Munzbergova Faculty of Science, Department of Botany, Charles University, Benátská 2, Praha 2, Prague, 12801, Czech Republic J. Hajslova Department of Food Chemistry and Analysis, Institute of Chemical Technology (ICT), Technická 5, Praha 6, Dejvice, 16628, Czech Republic F. H. Arthur USDA-ARS Grain Marketing & Production Research Center, 1515 College Avenue, Manhattan, KS 66502, USA