Article
Ecology
Kara E. Huff Hartz, Donald P. Weston, Nadhirah Johanif, Helen C. Poynton, Richard E. Connon, Michael J. Lydy
Summary: Wild-type Hyalella azteca are highly sensitive to pyrethroid insecticides, but the bioaccumulation by insecticide-resistant populations may increase the risk of pyrethroid transfer to higher trophic species. Bifenthrin was the most frequently detected pyrethroid in resistant H. azteca tissues, with higher concentrations in samples collected during winter months. The biota-sediment accumulation factors (BSAF) for bifenthrin and permethrin in resistant H. azteca were similar to less sensitive invertebrates, highlighting the potential for trophic transfer through resistant populations.
Article
Environmental Sciences
Corie A. Fulton, Kara E. Huff Hartz, Neil W. Fuller, Logan N. Kent, Sara E. Anzalone, Tristin M. Miller, Richard E. Connon, Helen P. Poynton, Michael J. Lydy
Summary: This study examined the salinity adaptation and reproductive capacity of pyrethroid-resistant Hyalella azteca, finding that pyrethroid-resistant individuals had lower thermal tolerance but were able to reproduce more offspring. Under elevated salinity conditions, both resistant and non-resistant H. azteca showed better growth performance, but pyrethroid-resistant animals had lower survival rates and lipid levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Marine & Freshwater Biology
Joseph Kusi, Kurt J. Maier
Summary: This study exposed Hyalella azteca to different forms of silver and found that silver nitrate had the highest toxicity, followed by citrate-AgNPs, and then PVP-AgNPs. It demonstrated that the current AWQC for silver is protective of freshwater aquatic life against AgNPs tested in the study.
AQUATIC TOXICOLOGY
(2022)
Article
Environmental Sciences
Andrew P. Derby, Kara E. Huff Hartz, Neil W. Fuller, Peter F. Landrum, John D. Reeve, Helen C. Poynton, Richard E. Connon, Michael J. Lydy
Summary: Recent studies have shown pyrethroid resistance in the epibenthic amphipod, Hyalella azteca, which could alter uptake and biotransformation of contaminants. Pyrethroid-resistant populations exhibit higher bioconcentration potential compared to non-resistant populations, with some impact from changes in temperature and salinity on toxicokinetic parameters.
Article
Environmental Sciences
Takahiro Nishimori, Kyoshiro Hiki, Fabian Christoph Fischer, Satoshi Endo, Hiroshi Yamamoto, Haruna Watanabe
Summary: Understanding the changes in chemical concentrations in sediment toxicity tests is important for interpreting toxicity and accumulation in benthic organisms. A study using chronic spiked-sediment toxicity tests found that the 28-day test provided stable concentrations of a hydrophobic organic chemical, with the freely dissolved concentration in porewater being the most representative indicator of bioaccumulation in the tested organism.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2022)
Article
Environmental Sciences
Sakura Yoshii, Kyoshiro Hiki, Haruna Watanabe, Hiroshi Yamamoto, Satoshi Endo
Summary: This study investigated the use of freely dissolved concentrations (Cfree) as a metric for exposure of the amphipod Hyalella azteca to the cationic surfactant benzyldodecyldimethylammonium (C12-BAC) in water and sediment. The results showed that Cfree in pore water was significantly higher than in overlying water and at the sediment-water interface. The 50% lethal concentration and bioconcentration factor obtained from water-only and sediment toxicity tests were consistent, indicating that H. azteca is mainly exposed to the freely dissolved fraction in pore water.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Paige M. Krupa, Guilherme R. Lotufo, Erik J. Mylroie, Lauren K. May, Kurt A. Gust, Ashley N. Kimble, Michael G. Jung, Jonna A. Boyda, Natalia Garcia-Reyero, David W. Moore
Summary: Perfluorooctane sulfonic acid (PFOS) is a widespread and persistent contaminant in aquatic ecosystems. This study conducted chronic PFOS toxicity tests on four freshwater organisms, and found that the sensitivity to PFOS varied among different species. The midge was the most sensitive, followed by the zebrafish, while the water flea and amphipod showed higher tolerance to PFOS.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
H. N. Khan, A. J. Bartlett, Y. M. Kudla, R. S. Prosser
Summary: Standard toxicological test methods often prioritize lethal endpoints over sublethal endpoints, even though the latter can be more ecologically relevant and sensitive. This study investigates the reproductive capacity of Hyalella azteca and proposes a novel reproductive toxicity test method using a specific female-to-male ratio to minimize variability and improve assessment of contaminants using reproduction as an endpoint.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yuxia Yang, Yue Tang, Chunxiao Wang, Bangyan Liu, Yuangen Wu
Summary: This study successfully identified a lambda-cyhalothrin aptamer (LCT-1) using the Capture-SELEX strategy, which demonstrated high affinity for lambda-cyhalothrin. A colorimetric aptasensor based on LCT-1 showed a detection limit of 0.0197 μg ml(-1), providing a promising approach for lambda-cyhalothrin detection.
ANALYTICA CHIMICA ACTA
(2021)
Article
Environmental Sciences
Kazune Tani, Haruna Watanabe, Mana Noguchi, Kyoshiro Hiki, Takahiro Yamagishi, Norihisa Tatarazako, Hiroshi Yamamoto
Summary: The EqP method can effectively predict the adverse effects of nonionic organic chemicals on benthic organisms in sediment, but further validation is needed for its applicability across a range of hydrophobic compounds. Experimental results indicate that the exposure pathway of benthic organisms plays a significant role in the toxicity assessment outcomes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Wojciech Rodzaj, Malwina Wilenska, Anna Klimowska, Emila Dziewirska, Joanna Jurewicz, Renata Walczak-Jedrzejowska, Jolanta Slowikowska-Hilczer, Wojciech Hanke, Bartosz Wielgomas
Summary: Pyrethroid insecticides are widely used and may pose a threat to human health. A study in Lodz, Poland found that non-dietary factors such as owning a dog, using pesticides on household pets, and dietary sources like seeds and nuts can significantly contribute to pyrethroid exposure in young men.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Andre Luis Correa de Barros, Daniel Aparecido da Silva Rodrigues, Camila Cristina Rodrigues Ferreira da Cunha, Igor Aparecido Santana das Chagas, Daiana Rocha do Espirito Santo, Silvana de Queiroz Silva, Robson Jose de Cassia Franco Afonso
Summary: This study evaluated the degradation, mineralization, and DBPs formation of the widely used herbicide metribuzin during aqueous chlorination. The results showed that DBPs formed during chlorination were more toxic than the precursor metribuzin, with increased toxicity effects on Anemia salina nauplii. Additionally, chlorinated solutions exhibited high estrogenicity to human receptors and mutagenic and developmental toxicant effects in BLYES and Q(SAR) tests.
Article
Environmental Sciences
Nathan D. Sy, Sarah S. Wheeler, Marcia Reed, Eric Haas-Stapleton, Trinidad Reyes, Mir Bear-Johnson, Susanne Kluh, Robert F. Cummings, Tianyun Su, Yaxin Xiong, Qingyang Shi, Jay Gan
Summary: Pesticide contamination is a threat to aquatic habitats, and runoff from residential homes contributes to this pollution in urban surface waters. This study found detectable levels of widely used pyrethroid insecticides in underground urban catch basins, suggesting that these basins may be an important secondary source of pesticide contamination in urban areas.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Xin Ke, Shuna Feng, Jingde Luan, Feijie Zhang, Yan Zhou
Summary: The study identified heavy metals and organic pollutants as the main toxic pollutants in sediment samples from the Xihe River in Shenyang. Cd was found to be the most serious pollutant, while phenol and P-methyl phenol were major organic pollutants. A spiking test of Cd confirmed its status as the primary toxic pollutant in sediments at certain sites. The Toxicity Identification Evaluation (TIE) method was determined to be the most effective in establishing the relationship between toxic effects and toxic pollutants.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2021)
Article
Environmental Sciences
Kyoshiro Hiki, Haruna Watanabe, Hiroshi Yamamoto
Summary: The variability of sediment LC50s is mainly affected by sediment type, with the use of formulated sediment leading to higher toxicity. Other factors have a minor impact, and these findings contribute to the improvement of methodologies used in sediment toxicity testing.
INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT
(2021)
Article
Environmental Sciences
Bryn M. Phillips, Brian S. Anderson, Katie Siegler, Jennifer P. Voorhees, Robert Budd, Ron Tjeerdema
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2016)
Article
Environmental Sciences
Bryn M. Phillips, Brian S. Anderson, Michael Cahn, Jessa L. Rego, Jennifer P. Voorhees, Katie Siegler, Xuyang Zhang, Robert Budd, Kean Goh, Ron S. Tjeerdema
INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT
(2017)
Article
Multidisciplinary Sciences
Brian S. Anderson, Bryn M. Phillips, Jennifer P. Voorhees, Michael Cahn
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2017)
Article
Environmental Sciences
Brian S. Anderson, Bryn M. Phillips, Jennifer P. Voorhees, Xin Deng, Jeff Geraci, Karen Worcester, Ron S. Tjeerdema
INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT
(2018)
Article
Environmental Sciences
Brian Anderson, Jennifer Voorhees, Bryn Phillips, Rich Fadness, Rosalina Stancheva, Jeanette Nichols, Daniel Orr, Susanna A. Wood
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2018)
Article
Environmental Sciences
Jennifer P. Voorhees, Bryn M. Phillips, Brian S. Anderson, Ron S. Tjeerdema, Barbara Page
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2020)
Article
Environmental Sciences
Brian Anderson, Bryn Phillips, Jennifer Voorhees, Katie Siegler, Phil Trowbridge
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Environmental Sciences
Kelly Moran, Brian Anderson, Bryn Phillips, Yuzhou Luo, Nan Singhasemanon, Richard Breuer, Dawit Tadesse
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2020)
Article
Environmental Sciences
Robert Budd, Dan Wang, Michael Ensminger, Bryn Phillips
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Bryn M. Phillips, Michael Cahn, Jennifer P. Voorhees, Laura McCalla, Katie Siegler, David L. Chambers, Thomas R. Lockhart, Xin Deng, Ron S. Tjeerdema
Summary: The study examined an integrated vegetated treatment system (VTS) with polyacrylamide (PAM) to minimize the toxicity of imidacloprid and permethrin pesticides in runoff, showing significant reduction in both suspended sediment and pesticide load. Integrated vegetated treatment systems are crucial tools for reducing pesticide load and pesticide-related toxicity in water bodies.
Article
Environmental Sciences
Laura B. McCalla, Bryn M. Phillips, Brian S. Anderson, Jennifer P. Voorhees, Katie Siegler, Katherine R. Faulkenberry, Maurice C. Goodman, Xin Deng, Ron S. Tjeerdema
Summary: This study monitored the effectiveness of a wetland treatment system coupled with granulated activated carbon (GAC) filtration in reducing pesticide concentrations and associated aquatic toxicity in the Salinas Valley, California. The results showed that the integrated system successfully reduced pesticide concentrations, nutrients, suspended particles, and aquatic toxicity in agricultural runoff.
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Environmental Sciences
Bryn M. Phillips, Jennifer P. Voorhees, Katie Siegler, Laura McCalla, Peter Meertens, Julie Bower, Ron S. Tjeerdema
Summary: This study provides important data on the tolerance thresholds of Chironomus dilutus to neonicotinoid and carbamate pesticides, supporting the development of water quality criteria. The results show that the effect concentrations of neonicotinoids compared favorably to previously published LC50 concentrations, while carbamate pesticide concentrations were within the acute survival range for Chironomus species.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Environmental Sciences
Bryn M. Phillips, Laura B. McCalla Fuller, Katie Siegler, Xin Deng, Ron S. Tjeerdema
Summary: Biochar filtration can effectively treat pesticide contaminants in agricultural runoff, but it may not be sufficient for water-soluble pesticides such as neonicotinoids. The use of biochar reduces pesticide concentrations and toxicity but does not significantly reduce nutrient levels.
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Environmental Sciences
Jennifer P. Voorhees, Brian S. Anderson, Bryn M. Phillips, Ron S. Tjeerdema
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2017)
Meeting Abstract
Chemistry, Multidisciplinary
Bryn Phillips
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2017)