title: Ecological risk assessment for aquatic invertebrate communities exposed to imidacloprid as a result of labeled agricultural and nonagricultural uses in the United States.
abstract: A probabilistic ecological risk assessment (ERA) was conducted to determine the potential effects of acute and chronic exposure of aquatic invertebrate communities to imidacloprid arising from labeled agricultural and nonagricultural uses in the United States. Aquatic exposure estimates were derived using a higher-tier refined modeling approach that accounts for realistic variability in environmental and agronomic factors. Toxicity was assessed using refined acute and chronic community-level effect metrics for aquatic invertebrates (i.e., species or taxon sensitivity distributions) developed using the best available data. Acute and chronic probabilistic risk estimates were derived by integrating the exposure distributions for different use patterns with the applicable species or taxon sensitivity distributions to generate risk curves, which plot cumulative probability of exceedance versus the magnitude of effect. Overall, the results of this assessment indicated that the aquatic invertebrate community is unlikely to be adversely affected by acute or chronic exposure to imidacloprid resulting from currently registered uses of imidacloprid in the United States. Environ Toxicol Chem 2017;36:1375-1388. © 2016 SETAC.
authors.affiliation: Intrinsik Environmental Sciences, Mississauga, Ontario, Canada.
authors.forename: Melissa
authors.initials: M
authors.lastname: Whitfield-Aslund
authors.affiliation: Stone Environmental, Montpelier, Vermont, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Winchell
authors.affiliation: Bayer CropScience, Research Triangle Park, North Carolina, USA.
authors.forename: Lisa
authors.initials: L
authors.lastname: Bowers
authors.affiliation: Bayer CropScience, Research Triangle Park, North Carolina, USA.
authors.forename: Sean
authors.initials: S
authors.lastname: McGee
authors.affiliation: Bayer CropScience, Research Triangle Park, North Carolina, USA.
authors.forename: Jane
authors.initials: J
authors.lastname: Tang
authors.affiliation: Stone Environmental, Montpelier, Vermont, USA.
authors.forename: Lauren
authors.initials: L
authors.lastname: Padilla
authors.affiliation: Intrinsik Environmental Sciences (US), New Gloucester, Maine, USA.
authors.forename: Colleen
authors.initials: C
authors.lastname: Greer
authors.affiliation: Stantec Consulting, Stoney Creek, Ontario, Canada.
authors.forename: Loren
authors.initials: L
authors.lastname: Knopper
authors.affiliation: Intrinsik Environmental Sciences (US), New Gloucester, Maine, USA.
authors.forename: Dwayne R J
authors.initials: DRJ
authors.lastname: Moore
mesh_terms: D000383:Agriculture; D000818:Animals; D019540:Area Under Curve; D007093:Imidazoles / Q000633:toxicity*; D007306:Insecticides / Q000633:toxicity*; D007448:Invertebrates / Q000187:drug effects*; D000073943:Neonicotinoids; D009574:Nitro Compounds / Q000633:toxicity*; D012372:ROC Curve; D018570:Risk Assessment; D023382:Toxicity Tests, Acute; D036401:Toxicity Tests, Chronic; D014481:United States; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D007093:Imidazoles; D007306:Insecticides; D000073943:Neonicotinoids; D009574:Nitro Compounds; D014874:Water Pollutants, Chemical; C082359:imidacloprid
keywords: Exposure modeling; Neonicotinoids; Probabilistic risk assessment