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1 December 2002 Mechanisms Underlying Sawtoothed Grain Beetle (Oryzaephilus surinamensis [L.]) (Coleoptera: Silvanidae) Infestation of Consumer Food Packaging Materials
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Abstract

The sawtoothed grain beetle, Oryzaephilus surinamensis (L.), is an extremely destructive pest of packaged consumer food products. The beetle is not believed to chew directly through packaging materials, but to use openings or flaws in damaged or improperly sealed packages to gain entry. We investigated the behavioral mechanisms by which the sawtoothed grain beetle infests packages with flaws. Significantly more sawtoothed grain beetles infested consumer food packages that had been punctured with 0.4 mm diameter holes, to simulate packaging flaws that preclude adults, than when packages had no flaws. In a test arena, females laid more eggs into or near the hole in a plastic packaging film, when they were able to contact the food through the hole than when they could not contact the food. First instar larvae placed either 1 mm or 1 cm away entered holes when food was present, indicating that packages could become infested if eggs were laid near holes. In the absence of food, neither adults nor larvae responded to holes. This study has shown the importance of sound packaging in preventing insect infestation.

S. V. Mowery, M. A. Mullen, J. F. Campbell, and A. B. Broce "Mechanisms Underlying Sawtoothed Grain Beetle (Oryzaephilus surinamensis [L.]) (Coleoptera: Silvanidae) Infestation of Consumer Food Packaging Materials," Journal of Economic Entomology 95(6), 1333-1336, (1 December 2002). https://doi.org/10.1603/0022-0493-95.6.1333
Received: 29 May 2002; Accepted: 1 August 2002; Published: 1 December 2002
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