Abstract
Adults and eggs of five stored-product insects were exposed to low-oxygen atmospheres containing 0.1– 0.6, 0.6–1.3, and 1.2–3.1% oxygen in nitrogen at 20 and 30 ˚C and 70% relative humidity. The treatment periods were 2, 4, 7, 10, and 14 days. Adults and eggs of Sitophilus zeamais and Lasioderma serricorne were more tolerant of low-oxygen concentrations than those of Tribolium castaneum, Liposcelis bostrychophilus, and Plodia interpunctella. The present study showed S. zeamais and L. serricorne eggs respectively needed 7 and 14 days of treatment at 0.1–0.6% oxygen concentration and 30 ˚C to provide complete mortality.
