Evaluating toxicity of Asana XL (esfenvalerate) amendments in agricultural ditch mesocosms

Chemosphere
J L BouldinC M Cooper

Abstract

Agricultural ditches primarily serve to remove and store excess water associated with irrigation and storm events. The ability of these ecosystems to mitigate potential contaminants is not well understood. Five sites along a 650-m agricultural ditch located in the Mississippi Delta Management Systems Evaluation Area (MDMSEA) were used to measure fate and effects of an esfenvalerate (insecticide) exposure. Following a 0.64-cm simulated storm event, samples were collected from water and sediments and analyzed spatially from five sites and temporally from 0.5 h to 56 d. Results of aqueous toxicity bioassays indicated that lethality progressed downstream throughout all sampling intervals, while sediment toxicity bioassays only elicited biological responses at the point of pesticide application to the ditch (0 m). Significant reductions in survival of Ceriodaphnia dubia and Pimephales promelas in water were measured at the 0-, 20-, and 80-m sites following application. Ten-day solid phase sediment testing of Chironomus tentans indicated persistent toxicity only at the point of application (0 m) and throughout 56 d (mean=14.4% survival). No lethality or significant reduction in midge growth was measured for remaining downstream sites...Continue Reading

References

May 1, 1987·Bulletin of Environmental Contamination and Toxicology·S P BradburyG J Atchison
Jul 4, 2001·Environmental Toxicology and Chemistry·L Samsøe-PetersenE Jørgensen
Jan 26, 2002·Environmental Toxicology and Chemistry·Steve J MaundWendy E Gentle
Apr 2, 2002·Chemosphere·M T MooreJ H Rodgers
Apr 20, 2004·Environmental Pollution·M T MooreS Smith

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Citations

Dec 24, 2015·Bulletin of Environmental Contamination and Toxicology·R RosaJ L T Pestana
Oct 4, 2011·The Science of the Total Environment·Erick NfonIan T Cousins
Jul 7, 2016·Marine Biotechnology·Willian G BirolliAndré L M Porto
Jun 6, 2007·Archives of Environmental Contamination and Toxicology·J L BouldinC M Cooper
Jun 30, 2011·Journal of Environmental Quality·Sebastian StehleRalf Schulz

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