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Kathryn Kuivila (Former Employee)

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A dragonfly in the wetlands in Southeast North Dakota.

Pesticides in the Prairie Pothole Region

Wetlands of the northern Great Plains are crucial feeding grounds for migrating birds and waterfowl embedded in an agricultural landscape. Land use and hydrology can affect adult aquatic insects – crucial prey for critically declining populations of insectivorous birds. Current studies focus on effects of current-use pesticides on adult aquatic insects to inform decision making about contaminants...
By
Ecosystems Mission Area, Toxic Substances Hydrology, Fort Collins Science Center
link

Pesticides in the Prairie Pothole Region

Wetlands of the northern Great Plains are crucial feeding grounds for migrating birds and waterfowl embedded in an agricultural landscape. Land use and hydrology can affect adult aquatic insects – crucial prey for critically declining populations of insectivorous birds. Current studies focus on effects of current-use pesticides on adult aquatic insects to inform decision making about contaminants...
Learn More
link
Small stream running through corn field on a farm

Neonicotinoid Insecticides Documented in Midwestern U.S. Streams

Three neonicotinoid insecticides (clothianidin, thiamethoxam and imidacloprid) were detected commonly throughout the growing season in water samples collected from nine Midwestern stream sites during the 2013 growing season according to a team of U.S. Geological Survey (USGS) scientists. Clothianidin was detected most frequently (75 percent) and at the highest maximum concentration (257 nanograms...
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology
link

Neonicotinoid Insecticides Documented in Midwestern U.S. Streams

Three neonicotinoid insecticides (clothianidin, thiamethoxam and imidacloprid) were detected commonly throughout the growing season in water samples collected from nine Midwestern stream sites during the 2013 growing season according to a team of U.S. Geological Survey (USGS) scientists. Clothianidin was detected most frequently (75 percent) and at the highest maximum concentration (257 nanograms...
Learn More
link
Glyphosate is frequently applied to corn and soybeans growing areas like these in Iowa

Common Weed Killer is Widespread in the Environment

U.S. Geological Survey (USGS) scientists report that glyphosate, known commercially by many trade names, and its degradation product AMPA (aminomethylphosphonic acid) are transported off-site from agricultural and urban sources and occur widely in the environment. This study is the largest and most comprehensive assessment of the environmental occurrence of glyphosate and AMPA in the United States...
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Colorado Water Science Center, Oregon Water Science Center
link

Common Weed Killer is Widespread in the Environment

U.S. Geological Survey (USGS) scientists report that glyphosate, known commercially by many trade names, and its degradation product AMPA (aminomethylphosphonic acid) are transported off-site from agricultural and urban sources and occur widely in the environment. This study is the largest and most comprehensive assessment of the environmental occurrence of glyphosate and AMPA in the United States...
Learn More

Current-use pesticides in tree swallow (Tachycineta bicolor) prey

Analysis of biological tissues or direct sources of food may better characterize exposure of non-target organisms to current-use pesticides. Food boluses were collected from tree swallow (Tachycineta bicolor) nestlings using a non-lethal, ligature method and were composited based on nest. The ligatures, which prevented the bolus from being swallowed, were placed on nestlings for 1 h until samples
By
California Water Science Center

Adult aquatic insect emergence, insect pesticide concentrations and water chemistry of wetlands in the Prairie Pothole Region, North Dakota, USA, 2015-16

This data release includes sampling location data, field-collected wetland attribute data, field-collected water chemistry data, laboratory-processed water chemistry data (anions, cations, alkalinity, nutrients, chlorophyll a concentrations, dissolved organic carbon, and specific ultraviolet absorbance, pesticide concentrations), dry mass of adult aquatic insects emerging from the surface of the w
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Columbia Environmental Research Center

Pesticide concentrations in surface waters of the Sacramento Valley rice-growing regions, 2010

Surface water samples were collected from four stream/agricultural drain sites in the Sacramento Valley of California to measure pesticides commonly applied to rice. Samples were collected weekly from May through August 2010 to capture the rice pesticide application season. Water samples were filtered (0.7 ?m) and extracted via solid-phase extraction. Additionally, the filter paper was solvent ext
By
California Water Science Center

Fungicides in nectar and pollen collected by bumble bees in a cherry orchard

Lab-reared colonies of Bombus huntii (Hunt bumble bee) were deployed in a commercial cherry orchard in the spring of 2016. A fungicide formulation containing boscalid (25.2%) and pyraclostrobin (12.8%) was applied one time at the recommended label rate. Nectar and pollen were collected daily, beginning two days before spray application and continuing for ten days following. Nectar samples were ext
By
California Water Science Center

Absorption, distribution, metabolism, and elimination of seed-treatment pesticides following the dosing of Japanese quail (Coturnix japonica)

Japanese quail (Coturnix japonica) were orally dosed with pesticide-treated or control-untreated wheat seeds. Pesticide treated wheat seeds were analytically verified for active ingredients of imidacloprid, metalaxyl, tebuconazole, and fludioxonil. Pesticide and metabolite residues were measured in plasma, liver, brain, kidney, muscle, and excreta of exposed and control birds. Samples were extract
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, California Water Science Center
Filter Total Items: 61

Field assessment of Naled and its primary degradation product (dichlorvos) in aquatic ecosystems following aerial ultra-low volume application for mosquito control

Naled, an organophosphate insecticide, is applied aerially at ultra-low volumes over aquatic ecosystems near Sacramento, California, USA, during summer months for mosquito control. Two ecosystem types (rice fields and a flowing canal) were sampled in 2020 and 2021. Naled and its primary degradation product (dichlorvos) were measured in water, biofilm, grazer macroinvertebrates, and omnivore/predat
Authors
Cassandra Smith, Michelle Hladik, Kathryn Kuivila, Ian R. Waite
By
Water Resources Mission Area, California Water Science Center, Oregon Water Science Center

Cross-ecosystem fluxes of pesticides from prairie wetlands mediated by aquatic insect emergence: Implications for terrestrial insectivores

Contaminants alter the quantity and quality of insect prey available to terrestrial insectivores. In agricultural regions, the quantity of aquatic insects emerging from freshwaters can be impacted by insecticides originating from surrounding croplands. We hypothesized that, in such regions, adult aquatic insects could also act as vectors of pesticide transfer to terrestrial food webs. To estimate
Authors
Johanna M. Kraus, Kathryn Kuivila, Michelle Hladik, Neil Shook, David M. Mushet, Kelen Dowdy, Rachel Harrington
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Columbia Environmental Research Center

Trends in agricultural triazole fungicide sse in the United States, 1992–2016 and possible implications for antifungal-resistant fungi in human disease

Background:The fungus Aspergillus fumigatus (A. fumigatus) is the leading cause of invasive mold infections, which cause severe disease and death in immunocompromised people. Use of triazole antifungal medications in recent decades has improved patient survival; however, triazole-resistant infections have become common in parts of Europe and are emerging in the United States. Triazoles are also a
Authors
Mitsuru Toda, Karlyn D. Beer, Kathryn Kuivila, Tom M. Chiller, Brendan R. Jackson
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Oregon Water Science Center

Field-level exposure of bumble bees to fungicides applied to a commercial cherry orchard

Bumble bees, Bombus spp. (Apidae), are important native pollinators; however, populations of some species are declining in North America and agricultural chemicals are a potential cause. Fungicides are generally not highly toxic to bees, but little is known about sublethal or synergistic effects. This study evaluates bumble bee exposure to fungicides by quantifying concentrations of boscalid and p
Authors
Kathryn M. Kuivila, Houston Judd, Michelle Hladik, James P. Strange
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Oregon Water Science Center

Uptake, metabolism, and elimination of fungicides from coated wheat seeds in Japanese quail (Coturnix japonica)

Pesticides coated to the seed surface potentially pose an ecological risk to granivorous birds that consume incompletely buried or spilled seeds. To assess the toxicokinetics of seeds treated with current-use fungicides, Japanese quail (Coturnix japonica) were orally dosed with commercially coated wheat seeds. Quail were exposed to metalaxyl, tebuconazole, and fludioxonil at either a low (0.07, 0.
Authors
Michael S. Gross, Thomas G. Bean, Michelle Hladik, Barnett A. Rattner, Kathryn Kuivila
By
Water Resources Mission Area, Ecosystems Mission Area, Eastern Ecological Science Center, California Water Science Center

Predictive analysis using chemical-gene interaction networks consistent with observed endocrine activity and mutagenicity of U.S. streams

In a recent U.S. Geological Survey/U.S. Environmental Protection Agency study assessing >700 organic compounds in 38 streams, in vitro assays indicated generally low estrogen, androgen, and glucocorticoid receptor activities, but identified 13 surface waters with 17β estradiol equivalent (E2Eq) activities greater than the 1 ng/L level of concern for feminization of male fish. Among the 36 samples
Authors
Jason P. Berninger, David M. DeMarini, Sarah H. Warren, Jane Ellen Simmons, Vickie S. Wilson, Justin M. Conley, Mikayla D. Armstrong, Dana W. Kolpin, Kathryn Kuivila, Timothy J. Reilly, Kristin M. Romanok, Daniel L. Villeneuve, Paul M. Bradley, Luke R. Iwanowicz
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Columbia Environmental Research Center, Eastern Ecological Science Center, New Jersey Water Science Center, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC)

Toxicokinetics of imidacloprid-coated wheat seeds in Japanese quail (Coturnix japonica) and an evaluation of hazard

Birds are potentially exposed to neonicotinoid insecticides by ingestion of coated seeds during crop planting. Adult male Japanese quail were orally dosed with wheat seeds coated with an imidacloprid (IMI) formulation at either 0.9 mg/kg body weight (BW) or 2.7 mg/kg BW (~3 and 9% of IMI LD50 for Japanese quail, respectively) for 1 or 10 days. Quail were euthanized between 1 and 24 h post-exposure
Authors
Thomas G. Bean, Michael S. Gross, Natalie K. Karouna-Renier, Paula F. P. Henry, Sandra L. Schultz, Michelle Hladik, Kathryn Kuivila, Barnett A. Rattner
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Eastern Ecological Science Center, California Water Science Center, Oregon Water Science Center

Reconnaissance of mixed organic and inorganic chemicals in private and public supply tapwaters at selected residential and workplace sites in the United States

Safe drinking water at the point-of-use (tapwater, TW) is a United States public health priority. Multiple lines of evidence were used to evaluate potential human health concerns of 482 organics and 19 inorganics in TW from 13 (7 public supply, 6 private well self-supply) home and 12 (public supply) workplace locations in 11 states. Only uranium (61.9 μg L–1, private well) exceeded a National Prim

Authors
Paul M. Bradley, Dana W. Kolpin, Kristin M. Romanok, Kelly L. Smalling, Michael J. Focazio, Juliane B. Brown, Mary C. Cardon, Kurt D. Carpenter, Steven R. Corsi, Laura A. DeCicco, Julie E. Dietze, Nicola Evans, Edward T. Furlong, Carrie E. Givens, James L. Gray, Dale W. Griffin, Christopher P. Higgins, Michelle L. Hladik, Luke R. Iwanowicz, Celeste A. Journey, Kathryn Kuivila, Jason R. Masoner, Carrie A. McDonough, Michael T. Meyer, James L. Orlando, Mark J. Strynar, Christopher P. Weis, Vickie S. Wilson
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, California Water Science Center, Central Midwest Water Science Center, Colorado Water Science Center, Eastern Ecological Science Center, Kansas Water Science Center, New Jersey Water Science Center, Oregon Water Science Center, South Atlantic Water Science Center (SAWSC), St. Petersburg Coastal and Marine Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, National Water Quality Laboratory

Leaching and sorption of neonicotinoid insecticides and fungicides from seed coatings

Seed coatings are a treatment used on a variety of crops to improve production and offer protection against pests and fungal outbreaks. The leaching of the active ingredients associated with the seed coatings and the sorption to soil was evaluated under laboratory conditions using commercially available corn and soybean seeds to study the fate and transport of these pesticides under controlled con
Authors
Kelly L. Smalling, Michelle L. Hladik, Corey Sanders, Kathryn Kuivila
By
Water Resources Mission Area, New Jersey Water Science Center, California Water Science Center

Expanded target-chemical analysis reveals extensive mixed-organic-contaminant exposure in USA streams

Surface water from 38 streams nationwide was assessed using 14 target-organic methods (719 compounds). Designed-bioactive anthropogenic contaminants (biocides, pharmaceuticals) comprised 57% of 406 organics detected at least once. The 10 most-frequently detected anthropogenic-organics included eight pesticides (desulfinylfipronil, AMPA, chlorpyrifos, dieldrin, metolachlor, atrazine, CIAT, glyphosa
Authors
Paul M. Bradley, Celeste A. Journey, Kristin M. Romanok, Larry B. Barber, Herbert T. Buxton, William T. Foreman, Edward T. Furlong, Susan T. Glassmeyer, Michelle L. Hladik, Luke R. Iwanowicz, Daniel Jones, Dana W. Kolpin, Kathryn M. Kuivila, Keith A. Loftin, Marc A. Mills, Michael T. Meyer, James L. Orlando, Timothy J. Reilly, Kelly L. Smalling, Daniel L. Villeneuve
By
Water Resources Mission Area, South Atlantic Water Science Center (SAWSC), California Water Science Center

Methods used to characterize the chemical composition and biological activity of environmental waters throughout the United States, 2012-14

A vast array of chemical compounds are in wide commercial use in the United States, and the potential ecological and human-health effect of exposure to chemical mixtures has been identified as a high priority in environment health science. Awareness of the potential effects of low-level chemical exposures is rising. The U.S. Geological Survey, in cooperation with the U.S. Environmental Protection
Authors
Kristin M. Romanok, Timothy J. Reilly, Larry B. Barber, J. Scott Boone, Herbert T. Buxton, William T. Foreman, Edward T. Furlong, Michelle Hladik, Luke R. Iwanowicz, Celeste A. Journey, Dana W. Kolpin, Kathryn Kuivila, Keith A. Loftin, Marc A. Mills, Michael T. Meyer, James L. Orlando, Kelly L. Smalling, Daniel L. Villeneuve, Paul M. Bradley
By
Water Resources Mission Area, South Atlantic Water Science Center (SAWSC)

Chronic toxicity of azoxystrobin to freshwater amphipods, midges, cladocerans, and mussels in water-only exposures

Understanding the effects of fungicides on nontarget organisms at realistic concentrations and exposure durations is vital for determining potential impacts on aquatic ecosystems. Environmental concentrations of the fungicide azoxystrobin have been reported up to 4.6 μg/L in the United States and 30 μg/L in Europe. The objective of the present study was to evaluate the chronic toxicity of azoxystr
Authors
James L. Kunz, Christopher G. Ingersoll, Kelly L. Smalling, Adria Elskus, Kathryn Kuivila
By
Ecosystems Mission Area, Columbia Environmental Research Center
Insecticides Similar to Nicotine Widespread in Midwest

Insecticides Similar to Nicotine Widespread in Midwest

Insecticides similar to nicotine, known as neonicotinoids, were found commonly in streams throughout the Midwest, according to a new USGS study. This...

Read Article

Science and Products

link
A dragonfly in the wetlands in Southeast North Dakota.

Pesticides in the Prairie Pothole Region

Wetlands of the northern Great Plains are crucial feeding grounds for migrating birds and waterfowl embedded in an agricultural landscape. Land use and hydrology can affect adult aquatic insects – crucial prey for critically declining populations of insectivorous birds. Current studies focus on effects of current-use pesticides on adult aquatic insects to inform decision making about contaminants...
By
Ecosystems Mission Area, Toxic Substances Hydrology, Fort Collins Science Center
link

Pesticides in the Prairie Pothole Region

Wetlands of the northern Great Plains are crucial feeding grounds for migrating birds and waterfowl embedded in an agricultural landscape. Land use and hydrology can affect adult aquatic insects – crucial prey for critically declining populations of insectivorous birds. Current studies focus on effects of current-use pesticides on adult aquatic insects to inform decision making about contaminants...
Learn More
link
Small stream running through corn field on a farm

Neonicotinoid Insecticides Documented in Midwestern U.S. Streams

Three neonicotinoid insecticides (clothianidin, thiamethoxam and imidacloprid) were detected commonly throughout the growing season in water samples collected from nine Midwestern stream sites during the 2013 growing season according to a team of U.S. Geological Survey (USGS) scientists. Clothianidin was detected most frequently (75 percent) and at the highest maximum concentration (257 nanograms...
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology
link

Neonicotinoid Insecticides Documented in Midwestern U.S. Streams

Three neonicotinoid insecticides (clothianidin, thiamethoxam and imidacloprid) were detected commonly throughout the growing season in water samples collected from nine Midwestern stream sites during the 2013 growing season according to a team of U.S. Geological Survey (USGS) scientists. Clothianidin was detected most frequently (75 percent) and at the highest maximum concentration (257 nanograms...
Learn More
link
Glyphosate is frequently applied to corn and soybeans growing areas like these in Iowa

Common Weed Killer is Widespread in the Environment

U.S. Geological Survey (USGS) scientists report that glyphosate, known commercially by many trade names, and its degradation product AMPA (aminomethylphosphonic acid) are transported off-site from agricultural and urban sources and occur widely in the environment. This study is the largest and most comprehensive assessment of the environmental occurrence of glyphosate and AMPA in the United States...
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Colorado Water Science Center, Oregon Water Science Center
link

Common Weed Killer is Widespread in the Environment

U.S. Geological Survey (USGS) scientists report that glyphosate, known commercially by many trade names, and its degradation product AMPA (aminomethylphosphonic acid) are transported off-site from agricultural and urban sources and occur widely in the environment. This study is the largest and most comprehensive assessment of the environmental occurrence of glyphosate and AMPA in the United States...
Learn More

Current-use pesticides in tree swallow (Tachycineta bicolor) prey

Analysis of biological tissues or direct sources of food may better characterize exposure of non-target organisms to current-use pesticides. Food boluses were collected from tree swallow (Tachycineta bicolor) nestlings using a non-lethal, ligature method and were composited based on nest. The ligatures, which prevented the bolus from being swallowed, were placed on nestlings for 1 h until samples
By
California Water Science Center

Adult aquatic insect emergence, insect pesticide concentrations and water chemistry of wetlands in the Prairie Pothole Region, North Dakota, USA, 2015-16

This data release includes sampling location data, field-collected wetland attribute data, field-collected water chemistry data, laboratory-processed water chemistry data (anions, cations, alkalinity, nutrients, chlorophyll a concentrations, dissolved organic carbon, and specific ultraviolet absorbance, pesticide concentrations), dry mass of adult aquatic insects emerging from the surface of the w
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Columbia Environmental Research Center

Pesticide concentrations in surface waters of the Sacramento Valley rice-growing regions, 2010

Surface water samples were collected from four stream/agricultural drain sites in the Sacramento Valley of California to measure pesticides commonly applied to rice. Samples were collected weekly from May through August 2010 to capture the rice pesticide application season. Water samples were filtered (0.7 ?m) and extracted via solid-phase extraction. Additionally, the filter paper was solvent ext
By
California Water Science Center

Fungicides in nectar and pollen collected by bumble bees in a cherry orchard

Lab-reared colonies of Bombus huntii (Hunt bumble bee) were deployed in a commercial cherry orchard in the spring of 2016. A fungicide formulation containing boscalid (25.2%) and pyraclostrobin (12.8%) was applied one time at the recommended label rate. Nectar and pollen were collected daily, beginning two days before spray application and continuing for ten days following. Nectar samples were ext
By
California Water Science Center

Absorption, distribution, metabolism, and elimination of seed-treatment pesticides following the dosing of Japanese quail (Coturnix japonica)

Japanese quail (Coturnix japonica) were orally dosed with pesticide-treated or control-untreated wheat seeds. Pesticide treated wheat seeds were analytically verified for active ingredients of imidacloprid, metalaxyl, tebuconazole, and fludioxonil. Pesticide and metabolite residues were measured in plasma, liver, brain, kidney, muscle, and excreta of exposed and control birds. Samples were extract
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, California Water Science Center
Filter Total Items: 61

Field assessment of Naled and its primary degradation product (dichlorvos) in aquatic ecosystems following aerial ultra-low volume application for mosquito control

Naled, an organophosphate insecticide, is applied aerially at ultra-low volumes over aquatic ecosystems near Sacramento, California, USA, during summer months for mosquito control. Two ecosystem types (rice fields and a flowing canal) were sampled in 2020 and 2021. Naled and its primary degradation product (dichlorvos) were measured in water, biofilm, grazer macroinvertebrates, and omnivore/predat
Authors
Cassandra Smith, Michelle Hladik, Kathryn Kuivila, Ian R. Waite
By
Water Resources Mission Area, California Water Science Center, Oregon Water Science Center

Cross-ecosystem fluxes of pesticides from prairie wetlands mediated by aquatic insect emergence: Implications for terrestrial insectivores

Contaminants alter the quantity and quality of insect prey available to terrestrial insectivores. In agricultural regions, the quantity of aquatic insects emerging from freshwaters can be impacted by insecticides originating from surrounding croplands. We hypothesized that, in such regions, adult aquatic insects could also act as vectors of pesticide transfer to terrestrial food webs. To estimate
Authors
Johanna M. Kraus, Kathryn Kuivila, Michelle Hladik, Neil Shook, David M. Mushet, Kelen Dowdy, Rachel Harrington
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Columbia Environmental Research Center

Trends in agricultural triazole fungicide sse in the United States, 1992–2016 and possible implications for antifungal-resistant fungi in human disease

Background:The fungus Aspergillus fumigatus (A. fumigatus) is the leading cause of invasive mold infections, which cause severe disease and death in immunocompromised people. Use of triazole antifungal medications in recent decades has improved patient survival; however, triazole-resistant infections have become common in parts of Europe and are emerging in the United States. Triazoles are also a
Authors
Mitsuru Toda, Karlyn D. Beer, Kathryn Kuivila, Tom M. Chiller, Brendan R. Jackson
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Oregon Water Science Center

Field-level exposure of bumble bees to fungicides applied to a commercial cherry orchard

Bumble bees, Bombus spp. (Apidae), are important native pollinators; however, populations of some species are declining in North America and agricultural chemicals are a potential cause. Fungicides are generally not highly toxic to bees, but little is known about sublethal or synergistic effects. This study evaluates bumble bee exposure to fungicides by quantifying concentrations of boscalid and p
Authors
Kathryn M. Kuivila, Houston Judd, Michelle Hladik, James P. Strange
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Oregon Water Science Center

Uptake, metabolism, and elimination of fungicides from coated wheat seeds in Japanese quail (Coturnix japonica)

Pesticides coated to the seed surface potentially pose an ecological risk to granivorous birds that consume incompletely buried or spilled seeds. To assess the toxicokinetics of seeds treated with current-use fungicides, Japanese quail (Coturnix japonica) were orally dosed with commercially coated wheat seeds. Quail were exposed to metalaxyl, tebuconazole, and fludioxonil at either a low (0.07, 0.
Authors
Michael S. Gross, Thomas G. Bean, Michelle Hladik, Barnett A. Rattner, Kathryn Kuivila
By
Water Resources Mission Area, Ecosystems Mission Area, Eastern Ecological Science Center, California Water Science Center

Predictive analysis using chemical-gene interaction networks consistent with observed endocrine activity and mutagenicity of U.S. streams

In a recent U.S. Geological Survey/U.S. Environmental Protection Agency study assessing >700 organic compounds in 38 streams, in vitro assays indicated generally low estrogen, androgen, and glucocorticoid receptor activities, but identified 13 surface waters with 17β estradiol equivalent (E2Eq) activities greater than the 1 ng/L level of concern for feminization of male fish. Among the 36 samples
Authors
Jason P. Berninger, David M. DeMarini, Sarah H. Warren, Jane Ellen Simmons, Vickie S. Wilson, Justin M. Conley, Mikayla D. Armstrong, Dana W. Kolpin, Kathryn Kuivila, Timothy J. Reilly, Kristin M. Romanok, Daniel L. Villeneuve, Paul M. Bradley, Luke R. Iwanowicz
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Columbia Environmental Research Center, Eastern Ecological Science Center, New Jersey Water Science Center, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC)

Toxicokinetics of imidacloprid-coated wheat seeds in Japanese quail (Coturnix japonica) and an evaluation of hazard

Birds are potentially exposed to neonicotinoid insecticides by ingestion of coated seeds during crop planting. Adult male Japanese quail were orally dosed with wheat seeds coated with an imidacloprid (IMI) formulation at either 0.9 mg/kg body weight (BW) or 2.7 mg/kg BW (~3 and 9% of IMI LD50 for Japanese quail, respectively) for 1 or 10 days. Quail were euthanized between 1 and 24 h post-exposure
Authors
Thomas G. Bean, Michael S. Gross, Natalie K. Karouna-Renier, Paula F. P. Henry, Sandra L. Schultz, Michelle Hladik, Kathryn Kuivila, Barnett A. Rattner
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Eastern Ecological Science Center, California Water Science Center, Oregon Water Science Center

Reconnaissance of mixed organic and inorganic chemicals in private and public supply tapwaters at selected residential and workplace sites in the United States

Safe drinking water at the point-of-use (tapwater, TW) is a United States public health priority. Multiple lines of evidence were used to evaluate potential human health concerns of 482 organics and 19 inorganics in TW from 13 (7 public supply, 6 private well self-supply) home and 12 (public supply) workplace locations in 11 states. Only uranium (61.9 μg L–1, private well) exceeded a National Prim

Authors
Paul M. Bradley, Dana W. Kolpin, Kristin M. Romanok, Kelly L. Smalling, Michael J. Focazio, Juliane B. Brown, Mary C. Cardon, Kurt D. Carpenter, Steven R. Corsi, Laura A. DeCicco, Julie E. Dietze, Nicola Evans, Edward T. Furlong, Carrie E. Givens, James L. Gray, Dale W. Griffin, Christopher P. Higgins, Michelle L. Hladik, Luke R. Iwanowicz, Celeste A. Journey, Kathryn Kuivila, Jason R. Masoner, Carrie A. McDonough, Michael T. Meyer, James L. Orlando, Mark J. Strynar, Christopher P. Weis, Vickie S. Wilson
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, California Water Science Center, Central Midwest Water Science Center, Colorado Water Science Center, Eastern Ecological Science Center, Kansas Water Science Center, New Jersey Water Science Center, Oregon Water Science Center, South Atlantic Water Science Center (SAWSC), St. Petersburg Coastal and Marine Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, National Water Quality Laboratory

Leaching and sorption of neonicotinoid insecticides and fungicides from seed coatings

Seed coatings are a treatment used on a variety of crops to improve production and offer protection against pests and fungal outbreaks. The leaching of the active ingredients associated with the seed coatings and the sorption to soil was evaluated under laboratory conditions using commercially available corn and soybean seeds to study the fate and transport of these pesticides under controlled con
Authors
Kelly L. Smalling, Michelle L. Hladik, Corey Sanders, Kathryn Kuivila
By
Water Resources Mission Area, New Jersey Water Science Center, California Water Science Center

Expanded target-chemical analysis reveals extensive mixed-organic-contaminant exposure in USA streams

Surface water from 38 streams nationwide was assessed using 14 target-organic methods (719 compounds). Designed-bioactive anthropogenic contaminants (biocides, pharmaceuticals) comprised 57% of 406 organics detected at least once. The 10 most-frequently detected anthropogenic-organics included eight pesticides (desulfinylfipronil, AMPA, chlorpyrifos, dieldrin, metolachlor, atrazine, CIAT, glyphosa
Authors
Paul M. Bradley, Celeste A. Journey, Kristin M. Romanok, Larry B. Barber, Herbert T. Buxton, William T. Foreman, Edward T. Furlong, Susan T. Glassmeyer, Michelle L. Hladik, Luke R. Iwanowicz, Daniel Jones, Dana W. Kolpin, Kathryn M. Kuivila, Keith A. Loftin, Marc A. Mills, Michael T. Meyer, James L. Orlando, Timothy J. Reilly, Kelly L. Smalling, Daniel L. Villeneuve
By
Water Resources Mission Area, South Atlantic Water Science Center (SAWSC), California Water Science Center

Methods used to characterize the chemical composition and biological activity of environmental waters throughout the United States, 2012-14

A vast array of chemical compounds are in wide commercial use in the United States, and the potential ecological and human-health effect of exposure to chemical mixtures has been identified as a high priority in environment health science. Awareness of the potential effects of low-level chemical exposures is rising. The U.S. Geological Survey, in cooperation with the U.S. Environmental Protection
Authors
Kristin M. Romanok, Timothy J. Reilly, Larry B. Barber, J. Scott Boone, Herbert T. Buxton, William T. Foreman, Edward T. Furlong, Michelle Hladik, Luke R. Iwanowicz, Celeste A. Journey, Dana W. Kolpin, Kathryn Kuivila, Keith A. Loftin, Marc A. Mills, Michael T. Meyer, James L. Orlando, Kelly L. Smalling, Daniel L. Villeneuve, Paul M. Bradley
By
Water Resources Mission Area, South Atlantic Water Science Center (SAWSC)

Chronic toxicity of azoxystrobin to freshwater amphipods, midges, cladocerans, and mussels in water-only exposures

Understanding the effects of fungicides on nontarget organisms at realistic concentrations and exposure durations is vital for determining potential impacts on aquatic ecosystems. Environmental concentrations of the fungicide azoxystrobin have been reported up to 4.6 μg/L in the United States and 30 μg/L in Europe. The objective of the present study was to evaluate the chronic toxicity of azoxystr
Authors
James L. Kunz, Christopher G. Ingersoll, Kelly L. Smalling, Adria Elskus, Kathryn Kuivila
By
Ecosystems Mission Area, Columbia Environmental Research Center
Insecticides Similar to Nicotine Widespread in Midwest

Insecticides Similar to Nicotine Widespread in Midwest

Insecticides similar to nicotine, known as neonicotinoids, were found commonly in streams throughout the Midwest, according to a new USGS study. This...

Read Article
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