Efficacy of extreme temperatures on all life stages of Oryzaephilus surinamensis (L.), and Ephestia kuehniella Zeller in laboratory conditions
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Maria K. Sakka, Marina Gourgouta, Christos G. Athanassiou
Pages: 80-82
Abstract: We evaluated the insecticidal effect of low and high temperatures on different life
stages of the saw-toothed grain beetle, Oryzaephilus surinamensis (L.) (Coleoptera:
Silvanidae), and the Mediterranean flour moth Ephestia kuehniella Zeller (Lepidoptera:
Pyralidae), under laboratory conditions. The trials were conducted in laboratory conditions with different temperatures and exposure times. Our results suggest that temperatures below -15 °C, regardless of the exposure time, seem to achieve complete mortality in all life stages of both species. Moreover, exposure at temperatures above 50 °C will kill all life stages of both species even after just 1 h of exposure. Overall, our results indicated that extreme temperatures are effective against stored product insects, while exposure time and temperature are key parameters for achieving complete control.