Toxicity of thiamethoxam to Tetranychus urticae Koch and Phytoseiulus persimilis Athias‐Henriot (Acari Tetranychidae, Phytoseiidae) through different routes of exposure
- 24 December 2010
- journal article
- research article
- Published by Wiley in Pest Management Science
- Vol. 67 (3), 352-359
- https://doi.org/10.1002/ps.2072
Abstract
BACKGROUND: Knowledge of the impact of insecticides on Tetranychus urticae Koch and its predator Phytoseiulus persimilis Athias-Henriot is crucial for IPM. This study evaluates the effect of thiamethoxam on T. urticae and its predator by considering different routes of exposure (topical, residual and contaminated food exposures) and their combinations. RESULTS: Thiamethoxam effects on T. urticae were higher when residual and contaminated food exposures were considered. The total effect was higher than 90% where contaminated food exposure was involved. On P. persimilis, the total effect was higher in residual and contaminated prey exposures compared with topical exposure, and all combinations of routes of exposure attained a total effect higher than 90%. CONCLUSION: Thiamethoxam was found to be toxic to T. urticae and P. persimilis; however, the impact of the insecticide depended on the routes of exposure and their combinations. Lethal and sublethal effects occurred in residual and contaminated food exposures, while only sublethal effects occurred in topical exposure of predators and prey. The toxicity of thiamethoxam on prey and predator increased with the number of exposure routes involved. By limiting exposure to thiamethoxam to ingestion of contaminated food only, the impact of the pesticide was more favourable to P. persimilis than to its prey. Copyright © 2010 Society of Chemical IndustryThis publication has 53 references indexed in Scilit:
- Effect of thiamethoxam on cockroach locomotor activity is associated with its metabolite clothianidinPest Management Science, 2010
- Non-target effects of neonicotinoid seed treatments; mortality of coccinellid larvae related to zoophytophagyBiological Control, 2009
- Drench Treatments for Management of Larval Japanese Beetle (Coleoptera: Scarabaeidae) in Field-Grown Balled and Burlapped Nursery PlantsJournal of Economic Entomology, 2008
- Mites for the control of pests in protected cultivationPest Management Science, 2007
- Effect of imidacloprid on the reproduction of acaricide‐resistant and susceptible strains of Tetranychus urticae Koch (Acari: Tetranychidae)Pest Management Science, 2006
- Evaluation of Insecticides and Application Methods Against Contarinia nasturtii (Diptera: Cecidomyiidae), a New Invasive Insect Pest in the United StatesJournal of Economic Entomology, 2006
- Effect of Bacillus thuringiensis subsp. israelensis and neonicotinoid insecticides on the fungus gnat Bradysia sp nr. coprophila (Lintner) (Diptera: Sciaridae)Pest Management Science, 2006
- Development, Oviposition, and Mortality of Neoseiulus fallacis (Acari: Phytoseiidae) in Response to Reduced-Risk InsecticidesJournal of Economic Entomology, 2005
- Toxicity of some insecticides to Tetranychus urticae, Neoseiulus californicus and Tydeus californicusBioControl, 2005
- Suppressing spread of Tomato spotted wilt virus by drenching infected source or healthy recipient plants with neonicotinoid insecticides to control thrips vectorsAnnals of Applied Biology, 2005