Fate of selected neonicotinoid insecticides in soil–water systems: Current state of the art and knowledge gaps

Pietrzak, Damian; Kania, Jarosław; Kmiecik, Ewa; Malina, Grzegorz; Wątor, Katarzyna

doi:10.1016/j.chemosphere.2020.126981

Cited by 148 publications

(57 citation statements)

References 104 publications

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“…It is possible that the transformation products were degraded quickly relative to the parent compounds or that transformation products were present that were not included in the LC‐MS/MS analytical method. Additional research is needed to address the knowledge gap in the concentrations and fate of neonicotinoid transformation products (Pietrzak et al 2020; Thompson et al 2020). The benchmarks that do exist for the transformation products provide conflicting evidence for their relative toxicities.…”

Section: Discussionmentioning

confidence: 99%

Neonicotinoid Insecticides in Surface Water, Groundwater, and Wastewater Across Land‐Use Gradients and Potential Effects

Berens

Capel

Arnold

2021

Enviro Toxic and Chemistry

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Neonicotinoid insecticides cause adverse effects on nontarget organisms, but more information about their occurrence in surface and groundwater is needed across a range of land uses. Sixty‐five sites in Minnesota, USA, representing rivers, streams, lakes, groundwater, and treated wastewater, were monitored via collection of 157 water samples to determine variability in spatiotemporal neonicotinoid concentrations. The data were used to assess relations to land use, hydrogeologic condition, and potential effects on aquatic life. Total neonicotinoid concentrations were highest in agricultural watersheds (median = 12 ng/L), followed by urban (2.9 ng/L) and undeveloped watersheds (1.9 ng/L). Clothianidin was most frequently detected in agricultural areas (detection frequency = 100%) and imidacloprid most often in urban waters (detection frequency = 97%). The seasonal trend of neonicotinoid concentrations in rivers, streams, and lakes showed that their highest concentrations coincided with spring planting and elevated streamflow. Consistently low neonicotinoid concentrations were found in shallow groundwater in agricultural regions (<1.2–16 ng/L, median = 1.4 ng/L). Treated municipal wastewater had the highest concentrations across all hydrologic compartments (12–48 ng/L, median = 19 ng/L), but neonicotinoid loads from rivers and streams (median = 4100 mg/d) were greater than in treated wastewater (700 mg/d). No samples exceeded acute aquatic‐life benchmarks for individual neonicotinoids, whereas 10% of samples exceeded a chronic benchmark for neonicotinoid mixtures. Although 62% of samples contained 2 or more neonicotinoids, the observed concentrations suggest there were low acute and potential chronic risks to aquatic life. This the first study of its size in Minnesota and is critical to better understanding the drivers of wide‐scale environmental contamination by neonicotinoids where urban, agricultural, and undeveloped lands are present. Environ Toxicol Chem 2021;40:1017–1033. © 2020 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

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Section: Discussionmentioning

confidence: 99%

Neonicotinoid Insecticides in Surface Water, Groundwater, and Wastewater Across Land‐Use Gradients and Potential Effects

Berens

Capel

Arnold

2021

Enviro Toxic and Chemistry

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“…Most interestingly, irrigation level mediated the effects of imidacloprid application in phacelia by affecting the amount of imidacloprid resulting in nectar, with higher concentrations in low irrigation plants. This pattern could be due to soil moisture and/or leaching rates [ 68 ]. First, low soil moisture causes plants to transpire more and increases xylem tension, resulting in higher water mobility and increased movement of water-soluble neonicotinoids [ 27 , 28 ].…”

Section: Discussionmentioning

confidence: 99%

Pollinators and plant nurseries: how irrigation and pesticide treatment of native ornamental plants impact solitary bees

Cecala

Rankin

2021

Proc. R. Soc. B.

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A key conservation goal in agroecosystems is to understand how management practices may affect beneficial species, such as pollinators. Currently, broad gaps exist in our knowledge as to how horticultural management practices, such as irrigation level, might influence bee reproduction, particularly for solitary bees. Despite the extensive use of ornamental plants by bees, especially little is known about how irrigation level may interact with insecticides, like water-soluble neonicotinoids, to influence floral rewards and bee reproduction. We designed a two-factor field cage experiment in which we reared Megachile rotundata (Fabricius) (Hymenoptera: Megachilidae) on containerized ornamental plants grown under two different irrigation levels and imidacloprid treatments (30% label rate dosage of a nursery formulation or an untreated control). Lower irrigation was associated with modest decreases in nectar volume and floral abundance in untreated plants, whereas irrigation did not affect plants treated with imidacloprid. Furthermore, higher irrigation decreased the amount of imidacloprid entering nectar. Imidacloprid application strongly reduced bee foraging activity and reproduction, and higher irrigation did not offset any negative effects on bees. Our study emphasizes the impact of a nursery neonicotinoid formulation on solitary bee foraging and reproduction, while highlighting interactions between irrigation level and neonicotinoid application in containerized plants themselves.

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“…There have been a number of reports in Japan of contamination from these pesticides in surface waters (Yamamoto et al, 2012;Sato et al, 2016;Nishino et al, 2018), effluents (Nishino et al, 2018), tap water (Sato et al, 2016;Kamata et al, 2020), and underground water sources (Hayashi et al, 2017). Due to the hydrophilic nature of nicotinoids, there is the possibility that these pesticides, when applied to agricultural fields, will enter the environment through runoff (Pietrzak et al, 2020). Most of the agricultural fields in Japan are used to grow rice, and 70% of these are "wet fields."…”

Section: Introductionmentioning

confidence: 99%

Contamination levels, monthly variations, and predictions of neonicotinoid pesticides in surface waters of Gifu Prefecture in Japan

HAYASHI

Sasaki

Takazawa

et al. 2021

EMCR

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The neonicotinoid pesticides acetamiprid (ACE), clothianidin (CTD), dinotefuran (DIN), imidacloprid (IMI), nitenpyram (NTP), thiacloprid (THI), and thiamethoxam (TMX) are widely used in over 120 countries. These pesticides have been regulated in many jurisdictions, including the European Union (EU), the United States, and the United Kingdom, due to adverse effects on non-target organisms, whereas some of these pesticides are permitted in Japan. In the present study, we have 1) measured levels of these pesticides at 103 locations (n = 672) across Gifu Prefecture, 2) analyzed the monthly trends and regionality using R and ArcGIS, and 3) created a predicted contamination map by an ordinary kriging analysis. The concentration levels of the seven neonicotinoid pesticides in surface waters were determined using liquid chromatography with tandem mass spectrometry (LC/ MS / MS) and ranged from < 2.0 to 530 ng / L during the ten-month period. In a total of 672 samples, the top three pesticides detected at high frequency were DIN (76.9%), CTD (48.4%), and IMI (19.6%). The concentration of the neonicotinoid pesticides in environmental waters varied with the time periods of application, physiochemical properties of the pesticides, land use, geological properties of the contamination sources, and other factors. Potential contamination sources were depicted in the predicted contamination maps by using ordinary kriging models, which showed that DIN and CTD are widely present in Gifu Prefecture. Monthly variance of the concentration of IMI differed in the two geological regions, due to differences in the time of application and agricultural products yield. The results of our study contribute to a better understanding of the contamination status of neonicotinoid pesticides by providing reference data (actual pesticide concentrations) as well as predicted contamination maps.

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Fate of selected neonicotinoid insecticides in soil–water systems: Current state of the art and knowledge gaps

Cited by 148 publications

References 104 publications

Neonicotinoid Insecticides in Surface Water, Groundwater, and Wastewater Across Land‐Use Gradients and Potential Effects

Neonicotinoid Insecticides in Surface Water, Groundwater, and Wastewater Across Land‐Use Gradients and Potential Effects

Pollinators and plant nurseries: how irrigation and pesticide treatment of native ornamental plants impact solitary bees

Contamination levels, monthly variations, and predictions of neonicotinoid pesticides in surface waters of Gifu Prefecture in Japan

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