| Title: | Delayed toxicity as a critical factor in the efficacy of aqueous baits for controlling Argentine ants (Hymenoptera: Formicidae) |
| Author(s): | Rust MK; Reierson DA; Klotz JH; |
| Address: | "Department of Entomology, University of California, Riverside, Riverside, CA 92521-0314, USA" |
| ISSN/ISBN: | 0022-0493 (Print) 0022-0493 (Linking) |
| Abstract: | "Boric acid, imidacloprid, and thiamethoxam in sucrose aqueous baits had different delayed toxicities to worker Argentine ants, Linepithema humile (Mayr). The concentrations required to produce an LT50 (time required to produce 50% mortality) within 1-4 d were 3.63-0.55% boric acid, 9.2 x 10(-3) to 7.1 x 10(-4)% imidacloprid, and 3 x 10(-4) to 2 x 10(-5)% thiamethoxam. The three toxicants were not repellent. Other laboratory trials showed that 1% boric acid, 5 x 10(-4) to 5 x 10(-3)% imidacloprid, and 1 x 10(-5) to 1 x 10(-3)% thiamethoxam had delayed toxic effects, whereas 0.5% boric acid and < 5 x 10(-3)% imidacloprid did not. Baits that provided an LT50 between days 1 and 4 were considered to have delayed toxic effects. The utility of aqueous sucrose baits and toxicants soluble in such systems and the negative impact of fast-acting toxicants on trail following, recruitment, trophallaxis, and control of Argentine ants are discussed" |
| Keywords: | Animals *Ants Argentina Boric Acids/administration & dosage Imidazoles/administration & dosage Insect Control/*methods Insecticides/*administration & dosage Kinetics Neonicotinoids Nitro Compounds/administration & dosage Oxazines/administration & dosage *; |
| Notes: | "MedlineRust, Michael K Reierson, Donald A Klotz, John H eng Research Support, Non-U.S. Gov't England 2004/07/29 J Econ Entomol. 2004 Jun; 97(3):1017-24. doi: 10.1093/jee/97.3.1017" |
