Abstract
Abstract The effect of low oxygen atmospheres on all life stages of the powderpost beetle, Lyctus brunneus (Stephens), was investigated. Artificial diet blocks infested with immature stages of Lyctus brunneus were exposed to a low oxygen atmosphere (0·4% oxygen, balance nitrogen) at 30°C and 70% RH for varying lengths of time. Mortality counts for immature stages were based on the relative number of adult beetles emerging from the treated and untreated diet blocks. One hundred percent mortality was observed for eggs, larvae and pupae exposed to low oxygen atmospheres for six, eight and 12 days, respectively. Adult beetles similarly exposed to low oxygen atmospheres all died within three days.
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