Effects of the Anti feeding Compound AC-24055 (4'-(3,3-Dimethyl-1-triazeno) acetanilide) on the Survival, Development, and Reproduction of Some Stored-Products Insects1
An anti feeding compound, American Cyanamid AC- 24055 (4'-(3,3-dimethyl-1-triazeno) acetanilide) was evaluated as a protectant, insecticide, and oviposition inhibitor against 6 species of stored products insects. The confused flour beetle, Tribolium confusum Jacquelin duVal; Cryptolestes turcicus (Grouvelle); and the saw-toothed grain beetle, Oryzaephilus surinamensis (L.), exposed for 7 days to f1our-fiiled sacks treated with an aqueous suspension of a 25% wettable powder formulation of AC-24055 at concentrations higher than 1076 mg per square meter did not oviposit into the sack; at the highest concentration tested, adult mortality was high. O. surinamensis and the merchant grain beetle, O. mercator (Fauvel), were most susceptible, and Trogoderma parabile Beal least susceptible of the 6 species, although all test insects died with continued exposure to treated sacks or food. This compound had a contact insecticidal action and also produced a volatile fraction that was highly toxic to adults of T. confusum and O. surinamensis. Adults of T. confusum, 1-3 days old, and O. mercator, 1-20 days old, failed to produce eggs in culture medium containing 1% by weight of a 25% wettable powder formulation of AC-24055. After adults of T. confusum were transferred from untreated to treated medium oviposition decreased to 0 and mortality rose. Upon transfer of the adults back to untreated medium, oviposition was resumed but at a lower rate than that by beetles kept on untreated medium continuously. Older adults of T. confusum (14 days) produced some eggs in medium containing I% by weight of the 25% formulation. Most of these were ready for deposition before any inhibitory effect on oviposition was exerted. Adults of the granary weevil, Sitophilus granarius (L.), suffered 100% mortality during a 19-day exposure to wheat kernels treated with a 1% aqueous suspension of the 25% wettable powder. Only slight insect damage of treated kernels occurred, and no progeny were observed; untreated kernels were severely damaged and heavily infested with progeny. Eggs of T. confusum, C. turcicus, and T. parabile in treated medium hatched in the same period as those in untreated medium but usually died as 1st-in star larvae.
Document Type: Research Article
Publication date: February 1, 1969
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Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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