Issue:ISSN 2095-1353
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2013年50 No.6
Effect of foodgrade inert dust on the growth and development of cotton varieties to Apolygus lucorum
Author of the article:CAO Yang1LI Jin2 LI YanYu1**ZHAO HuiYi1ZHANG Tao1SHI TianYu1TIAN Lin1
Author's Workplace：1. Academy of State Administration of Grain，Beijing100037, China;
Key Words：food grade inert dust, storedgrain insect, F1 generation, egg, larvae, growth and development
Abstract：The eggs and first instar larvae of Tribolium castaneum (Herbst)、Lasioderma serricorne (Fabricius) and Oryzaephilus surinamensis (Linnaeus) were treated with a foodgrade inert dust (No. 4) using a dry, residual film bioassay. The hatching rates of all three species was over 97%, mortality of just hatched larva over 96% and mean mortalities of first instar larvae over 99%. The results show that the food grade inert dust had no effect on the hatching rate of these three insects, but killed almost 100% of first instar larvae. The combined influence of inert dust and wheat moisture content on a T. castaneum F1 generation was investigated using orthogonal tests; the results show that both factors significantly inhibited the development of F1 generation. When the moisture content of wheat was between 12% and 14%, 100 mg/kg to 150 mg/kg of inert dust can effectively inhibit the development of the F1 generation of T. castaneum.