Insecticide Resistance Among Populations of Almond Moth and Indianmeal Moth (Lepidoptera: Pyralidae) in Stored Peanuts

Publisher Website
Google Scholar
Abstract
Field strains of almond moth, Cadra cautella (Walker), and Indianmeal moth, Plodia interpunctella (Hübner), collected from peanut storage facilities were tested for resistance to dichlorvos, malathion, pirimiphos-methyl, chlorpyrifos-methyl, and synergized pyrethrins. Evidence of dichlorvos resistance was present in 1 of 6 almond moth strains and all 16 Indianmeal moth strains tested. Malathion resistance was severe. The almond moth strain most resistant to dichlorvos was also resistant to pirimiphos-methyl and chlorpyrifos-methyl. One other almond moth strain showed resistance to chlorpyrifos-methyl. There were no clear indications of resistance in Indianmeal moth strains to pirimiphos-methyl or chlorpyrifos-methyl. Resistance to synergized pyrethrins was not severe. None of 7 almond moth strains and 20 Indianmeal moth strains tested had >5.4-fold resistance to synergized pyrethrins.