Cooperative Fish and Wildlife Research Units Program: Missouri
Education, Research and Technical Assistance for Managing Our Natural Resources

Missouri Project

Evaluating toxicity implications of wetland sediment insecticide concentrations on benthic aquatic insects and temporal changes in aquatic invertebrate communities in Missouri wetland ecosystems

October 2022 - September 2026


Participating Agencies

  • Missouri Department of Conservation

Widespread use of neonicotinoid insecticides in North America has led to frequent detection of neonicotinoids in surface waters, although few studies have evaluated underlying sediments for presence of neonicotinoids. Recent research found neonicotinoid concentrations in Missouri wetland sediments were consistently an order of magnitude greater than water concentrations. The overall goals of the study are to derive benthic invertebrate toxicity thresholds for clothianidin in sediment that can be used to support risk management decisions on public lands and evaluate the relative role of agrochemicals in contributing to potential long-term changes in aquatic invertebrate communities

Presentations Presentation Date
Sweeney, C., E. Webb, J. Steevens and A. Messerman. Quantifying neonicotinoid concentrations and toxicity thresholds in aquatic macroinvertebrates: implications for wetland-dependent wildlife. Poster presentation at the 9th North American Duck Symposium. Portland Oregon, February 5-9, 2024 February 2024