Effects of Amdro on the Red Imported Fire Ant (Hymenoptera: Formicidae) and Some Nontarget Ant Species and Persistence of Amdro on a Pasture Habitat in North Carolina

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A bait, Amdro, containing the toxicant AC217,300 (tetrahydro-5,5-dimethyl-2(1-H)-pyrimidinone[3-[4-(trifluoromethyl)phenyl]-1-[2-[4-(trifluoromethyl)phenyl]ethenyl]-2-propenylidene]hydrazone), was tested for efficacy against the red imported fire ant, Solenopsis invicta Buren, in a pasture in southeastern North Carolina. Significant (P ≤ 0.05) differences in fire ant colony activity and structure were found between treatment and control populations following broadcast (1.7 kg [AI]/ha) and single mound (5 tablespoons per mound) applications. High numbers of incipient fire ant colonies were found in the treated areas of the pasture following the Amdro applications. Deleterious effects on nontarget ant species were not detected. Residues of Amdro were undetectable within 24 h of the broadcast application. Because of the rapid reoccupation of treated areas by incipient colonies, multiple applications of Amdro will be required to achieve long-term suppression of S. invicta populations.

Document Type: Research Article

Publication date: August 1, 1984

More about this publication?
  • 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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