Bioactivity of a chitin synthesis inhibitor, triflumuron, against red flour beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)
2012
Yasir, M. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agricultural Entomology) | Sagheer, M. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agricultural Entomology) | Mansoor-ul-Hasan (University of Agriculture, Faisalabad (Pakistan). Dept. of Agricultural Entomology) | Abbas, S.K. | Ahmad, S.
Red flour beetle, Tribolium castaneum (Herbst), is a worldwide serious pest of dried, stored, durable agricultural commodities, and of many value-added food products and non-food derivatives of agricultural products. A laboratory study was conducted to determine the ovicidal and reproduction inhibitory effects of a chitin synthesis inhibitor (CSI), triflumuron, against two field strains of T. castaneum. At concentrations of 0.01, 0.02, and 0.04 ppm, triflumuron did not kill the adults but caused significant reduction in oviposition and egg hatching of adults which were exposed to triflumuron-treated flour. Subsequent development of F1 larvae, pupa and adults from hatched eggs were also severely inhibited. In a separate experiment, direct exposure of eggs laid by unexposed beetles to triflumuron also caused reduction in egg hatching and subsequent development of larvae, pupae and adult emergence was also inhibited. However, the inhibition effects due to direct egg treatment were not as strong as those obtained due to the adult treatment. Results show that triflumuron can be a useful addition for pest management programmes in mills, warehouses and food storage facilities.
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