Survival Ability of Oryzaephilus surinamensis in Dry Milk Cans Treated with Nitrogen Gas and Desiccation

Abstract

1. Adults of saw-toothed grain beetles, Oryzaephilus surinamensis were kept in dry milk cans filled with nitrogen gas and air at a constant temperature of 15°C or 28°C.
Some of adults survived for two weeks at 15°C in the cans filled with nitrogen gas. But there was no living insect after one week at 28°C. The ovipositing and development were inhibited in the cans filled with nitrogen gas.
2. The adults were possible to survive not less than four weeks in dry milk but no larva developed at a humidity of 0% R.H.