Widespread occurrence of neonicotinoid insecticides in streams in a high corn and soybean producing region, USA

Hladik, Michelle L.; Kolpin, Dana W.; Kuivila, Kathryn M.

doi:10.1016/j.envpol.2014.06.033

Cited by 330 publications

(254 citation statements)

References 22 publications

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“…Although, maximum concentrations reported previously were an order of magnitude higher than our results, neonicotinoids were detected approximately 45% of the time throughout the spring/summer. Similarly, in a recent study by Hladik et al (2014), neonicotinoids were reported frequently (40-100%) in Iowa surface water samples collected between April and July of 2013. Neonicotinoids are receiving increased scrutiny because they have been implicated in adversely affecting pollinators and linked to colony collapse disorder in bees (Spivak et al, 2011;vanEngelsdorp et al, 2009) but currently potential effects on amphibians are largely unknown.…”

Section: Water and Sediment Qualitysupporting

confidence: 53%

Pesticide concentrations in frog tissue and wetland habitats in a landscape dominated by agriculture

Smalling

Reeves

Muths

et al. 2015

Science of The Total Environment

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124

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Habitat loss and exposure to pesticides are likely primary factors contributing to amphibian decline in agricultural landscapes. Conservation efforts have attempted to restore wetlands lost through landscape modifications to reduce contaminant loads in surface waters and providing quality habitat to wildlife. The benefits of this increased wetland area, perhaps especially for amphibians, may be negated if habitat quality is insufficient to support persistent populations. We examined the presence of pesticides and nutrients in water and sediment as indicators of habitat quality and assessed the bioaccumulation of pesticides in the tissue of twonative amphibian species Pseudacris maculata (chorus frogs) and Lithobates pipiens (leopard frogs) at six wetlands (3 restored and 3 reference) in Iowa, USA. Restored wetlands are positioned on the landscape to receive subsurface tile drainage water while referencewetlands receive water fromoverland run-off and shallow groundwater sources. Concentrations of the pesticides frequently detected inwater and sediment samples were not different between wetland types. The median concentration of atrazine in surface water was 0.2 μg/ L. Reproductive abnormalities in leopard frogs have been observed in other studies at these concentrations. Nutrient concentrations were higher in the restored wetlands but lower than concentrations thought lethal to frogs. Complex mixtures of pesticides including up to 8 fungicides, some previously unreported in tissue, were detected with concentrations ranging from 0.08 to 1500 μg/kg wet weight. No significant differences in pesticide concentrations were observed between species, although concentrations tended to be higher in leopard frogs compared to chorus frogs, possibly because of differences in life histories. Our results provide information on habitat quality in restored wetlands that will assist state and federal agencies, landowners, and resource managers in identifying and implementing conservation and management actions for these and similar wetlands in agriculturally dominated landscapes. RightsWorks produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted. H I G H L I G H T S• Habitat quality was similar between restored and reference wetlands in Iowa.• Complex mixtures of pesticides are detected in frog tissues (liver and whole body).• The number of fungicides (up to 8) in frog tissues is largest reported to date.• Life history has the potential to impact pesticide bioaccumulation in frogs. Habitat loss and exposure to pesticides are likely primary factors contributing to amphibian decline in agricultural landscapes. Conservation efforts have attempted to restore wetlands lost through landscape modifications to reduce contaminant loads in surface waters and providing quality habitat to wildlife. The benefits of this increased wetland area, perhaps especially for amphibians, may be negated if habitat quality is insufficient t...

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Section: Water and Sediment Qualitysupporting

confidence: 53%

Pesticide concentrations in frog tissue and wetland habitats in a landscape dominated by agriculture

Smalling

Reeves

Muths

et al. 2015

Science of The Total Environment

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124

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“…The contamination of agricultural soil with neonicotinoid and fipronil residues results mainly from the widespread use of pesticide-coated seeds (Douglas and Tooker 2015;Hladik et al 2014). Eventually, soil residues move into the aquatic ecosystems, either by percolation and leaching through the soil profile (de Perre et al 2015;Wettstein et al 2016) or in surface runoff after rainfall and storms (Chrétien et al 2017).…”

Section: Impacts On Aquatic Ecosystemsmentioning

confidence: 99%

An update of the Worldwide Integrated Assessment (WIA) on systemic insecticides. Part 2: impacts on organisms and ecosystems

Pisa

Goulson

Yang

et al. 2017

Environ Sci Pollut Res

190

144

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New information on the lethal and sublethal effects of neonicotinoids and fipronil on organisms is presented in this review, complementing the previous Worldwide Integrated Assessment (WIA) in 2015. The high toxicity of these systemic insecticides to invertebrates has been confirmed and expanded to include more species and compounds. Most of the recent research has focused on bees and the sublethal and ecological impacts these insecticides have on pollinators. Toxic effects on other invertebrate taxa also covered predatory and parasitoid natural enemies and aquatic arthropods. Little new information has been gathered on soil organisms. The impact on marine and coastal ecosystems is still largely uncharted. The chronic lethality of neonicotinoids to insects and crustaceans, and the strengthened evidence that these chemicals also impair the immune system and reproduction, highlights the dangers of this particular insecticidal class (neonicotinoids and fipronil), with the potential to greatly decrease populations of arthropods in both terrestrial and aquatic environments. Sublethal effects on fish, reptiles, frogs, birds, and mammals are also reported, showing a better understanding of the mechanisms of toxicity of these insecticides in vertebrates and their deleterious impacts on growth, reproduction, and neurobehaviour of most of the species tested. This review concludes with a summary of impacts on the ecosystem services and functioning, particularly on pollination, soil biota, and aquatic invertebrate communities, thus reinforcing the previous WIA conclusions .

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“…Eight out of the 10 most frequently detected chemicals were pesticides, including one metabolite of fipronil (desulfinylfipronil, 0.1-10 ng/L), which was detected at 84% of the sites, whereas fipronil parent compound was found in 45% of sites at concentrations in the range 7-110 ng/L. Among the neonicotinoids detected, imidacloprid was present in 37% of sites (5-100 ng/L), clothianidin in 24% (3-70 ng/L), dinotefuran in 13% (5-110 ng/L), and acetamiprid only at one site (30 ng/L) (Bradley et al 2017) and at least one neonicotinoid in 53% of the water samples collected from streams (Hladik et al 2014;Hladik and Kolpin 2016). Waterborne levels of clothianidin and thiamethoxam residues were correlated to the percentage of crop land in the regions surveyed, whereas imidacloprid levels were related to the percentage of urban area within the basin (Hladik and Kolpin 2016).…”

Section: Water and Sedimentsmentioning

confidence: 99%

An update of the Worldwide Integrated Assessment (WIA) on systemic insecticides. Part 1: new molecules, metabolism, fate, and transport

Giorio

Safer

Sánchez‐Bayo

et al. 2017

Environ Sci Pollut Res

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With the exponential number of published data on neonicotinoids and fipronil during the last decade, an updated review of literature has been conducted in three parts. The present part focuses on gaps of knowledge that have been addressed after publication of the Worldwide Integrated Assessment (WIA) on systemic insecticides in 2015. More specifically, new data on the mode of action and metabolism of neonicotinoids and fipronil, and their toxicity to invertebrates and vertebrates, were obtained. We included the newly detected synergistic effects and/or interactions of these systemic insecticides with other insecticides, fungicides, herbicides, adjuvants, honeybee viruses, and parasites of honeybees. New studies have also investigated the contamination of all environmental compartments (air and dust, soil, water, sediments, and plants) as well as bees and apicultural products, food and beverages, and the exposure of invertebrates and vertebrates to such contaminants. Finally, we review new publications on remediation of neonicotinoids and fipronil, especially in water systems. Conclusions of the previous WIA in 2015 are reinforced; neonicotinoids and fipronil represent a major threat worldwide for biodiversity, ecosystems, and all the services the latter provide.

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Widespread occurrence of neonicotinoid insecticides in streams in a high corn and soybean producing region, USA

Cited by 330 publications

References 22 publications

Pesticide concentrations in frog tissue and wetland habitats in a landscape dominated by agriculture

Pesticide concentrations in frog tissue and wetland habitats in a landscape dominated by agriculture

An update of the Worldwide Integrated Assessment (WIA) on systemic insecticides. Part 2: impacts on organisms and ecosystems

An update of the Worldwide Integrated Assessment (WIA) on systemic insecticides. Part 1: new molecules, metabolism, fate, and transport

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