Life Table of Siamese Grain Beetle (Lophocateres pusillus Klug.) and Toxicity of Plant Chemicals Against Insect
S. Somboon and S. Pimsamarn
Book of Abstract. APEC Symposium on Assuring Quality and Safety of Fresh Produce, August 1-3, 2005, Bangkok, Thailand. 76 page.
2005
บทคัดย่อ
The Siamese grain beetle (Lophocateres pusillus Klug.) is now well established and often exists in large numbers on both paddy and milled rice in some Asian countries. Biological data and life table were examined on both conditions, laboratory (25±2°C, 75-80% RH) and room temperature condition. Life table parameters, reproductive rate (R0) and intrinsic rate of increase (r) of laboratory condition were significantly lower than when conducted in room temperature condition. Bioassays by impregnated filter paper test on L. pusillus female of Cleome gynandrs (L.) Brig and Cleome chelidonii L., methanolic extracts indicated high toxicity. The results demonstrate the potential of using this phytochemicals as contact insecticide for the control of stored-product insects.