Article
Environmental Sciences
Hangyu Lin, Xiaodong Mao, Yanlin Wei, Songzhang Li, Jianguang Qin, Song Zhu, Shengqi Su, Tao He
Summary: This study investigates the accumulation and metabolic regulation of methylmercury in the rotifer Brachionus plicatilis using aggregation-induced emission fluorogen (AIEgen) and metabolomics. The results show that the accumulation of methylmercury mainly occurs in the ciliary corona, digestive organs, and pedal gland of the rotifer, and it is difficult for the rotifer to metabolize methylmercury outside the body. The exposure of rotifers to methylmercury through direct absorption and food intake leads to different metabolic responses, and the biosynthesis and metabolism of arginine in rotifers are disturbed in both pathways. This study provides new insights into the accumulation and toxicity mechanisms of methylmercury on marine invertebrates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Fisheries
Mi-Song Hong, Deok-Seo Yoon, Ji-Su Kim, Heum Gi Park, Jae-Seong Lee, Min-Chul Lee
Summary: We conducted a comprehensive analysis of the effects of increased salinity on Brachionus plicatilis, finding delays in maturation and potential disruptions in the reproductive process. High salinity also impedes growth and alters swimming behavior. Additionally, we discovered distinctive sequences of FABPs in three Brachionus species, contributing to our understanding of their evolutionary positioning.
Article
Environmental Sciences
Chuxin Wang, Haksoo Jeong, Jin-Sol Lee, Piotr Maszczyk, Alaa El-Din H. Sayed, Un-Ki Hwang, Hyung Sik Kim, Jae-Seong Lee, Eunjin Byeon
Summary: This study demonstrates the combined effect of high concentrations of nanoplastics (NPs) and copper (Cu) on the marine rotifer Brachionus plicatilis, leading to decreased growth rate, reproduction, and lifespan. The interaction of NPs and Cu activates the ERK cell signaling pathway. The impaired MXR function caused by high concentrations of NPs increases the sensitivity of B. plicatilis to Cu, resulting in increased physiological toxicity.
MARINE POLLUTION BULLETIN
(2023)
Article
Fisheries
Jose A. Perez, Diana B. Reis, Daniel Ramirez, Nieves G. Acosta, Roberto Dorta-Guerra, Salvador Jerez, Covadonga Rodriguez
Summary: This study demonstrates the endogenous fatty acid metabolism of the marine rotifer, Brachionus plicatilis, and its ability to produce long-chain polyunsaturated fatty acids (LC-PUFA) from its precursors. The study also finds that the conversion rate of fatty acids is comparatively low, with a lower incorporation of docosahexaenoic acid (DHA) compared to other substrates. These factors, along with a competitive esterification pattern, may result in inadequate essential fatty acid ratios for marine larvae nutrition if not properly considered in the lipid enrichment process.
Article
Fisheries
Xuerui Gong, Ying Guo, Jingjie Hu, Zhenmin Bao, Mengqiang Wang
Summary: In this study, the full-length cDNA of a thioredoxin-like protein gene from rotifer Brachionus plicatilis was obtained. The protein was found to have antioxidant capacity and may be involved in regulating excessive reactive oxygen species (ROS) during environmental stress or pathogen invading.
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Zhihan Cao, Ping Li, Xuqian Cao, Xu Wang, Bin Liu, Shuwen He, Guang Gao, Rong Lu, Zhi-Hua Li
Summary: This study investigated the reproductive toxicity of TPT on marine rotifer using environmental concentrations. The results showed that TPT concentrations affected the population size, reproductive rate, and growth rate of the rotifers. Additionally, TPT exposure led to oxidative damage, delayed reproduction, and changes in phenotypic traits. Furthermore, the expression of a gene associated with reproduction was altered by TPT exposure.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
(2022)
Article
Engineering, Environmental
Deok-Seo Yoon, Yoseop Lee, Jun Chul Park, Min-Chul Lee, Jae-Seong Lee
Summary: The effects of TBT and microplastic exposure on rotifers were investigated, showing varied impacts on reproduction and lifespan under different dietary regimens. Reactive oxygen species increased and antioxidant activities were disrupted in response to TBT and/or microplastic exposure. The carryover effect of TBT toxicity was observed in progeny rotifers from exposed parental rotifers.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Xin Zhang, Xuexi Tang, Yingying Yang, Zijie Sun, Wenqian Ma, Xin Tong, Chengmin Wang, Xinxin Zhang
Summary: The study revealed that TnBP has adverse effects on the reproduction and population growth of marine rotifers, causing reproductive toxicity at high concentrations, oxidative imbalance, impaired mitochondrial function, and disrupted metabolic pathways. Furthermore, TnBP induced internal connections that affect the balance of different life processes in response to environmental stress.
ENVIRONMENTAL POLLUTION
(2021)
Article
Marine & Freshwater Biology
Ivana Jezkova, Raquel Ortells, Javier Montero-Pau, Manuel Serra
Summary: This study reveals the presence of ongoing behavioral reproductive isolation in populations of Brachionus plicatilis rotifer, with a more pronounced isolation in populations with higher levels of adaptive divergence.
Article
Marine & Freshwater Biology
Hye-Min Kang, Eunjin Byeon, Haksoo Jeong, Yoseop Lee, Un-Ki Hwang, Chang-Bum Jeong, Cheolho Yoon, Jae-Seong Lee
Summary: This study examined the combined effects of nano(micro)plastics (NMPs) and arsenic (As) on the marine rotifer Brachionus plicatilis. The results showed that NPs increased As toxicity while MPs alleviated it, and NPs inhibited the efflux of As. These findings provide a deeper understanding of the environmental pollutants and their interactions.
AQUATIC TOXICOLOGY
(2021)
Article
Engineering, Environmental
Yunfei Sun, Lei Gu, Lu Zhang, Zhou Yang
Summary: Research found that algae with different nutrient contents have different effects on the reproduction and lifespan of rotifers, but rotifers can completely eliminate harmful algae. These effects are related to the nutrition of the algae and the expression of related genes.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Zijie Sun, Wenqian Ma, Xuexi Tang, Xin Zhang, Yingying Yang, Xinxin Zhang
Summary: In this study, the effects of triphenyl phosphate (TPhP) on the marine rotifer Brachionus plicatilis were investigated. Results showed that TPhP had negative impacts on the lifespan, reproduction, and population dynamics of the rotifers. Metabolomics analysis revealed disruptions in lipid metabolism induced by TPhP. These findings enhance our understanding of the ecological risk and mode of action of TPhP in aquatic environments.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Yoseop Lee, Min -Sub Kim, Jordan Jun Chul Park, Young Hwan Lee, Jae-Seong Lee
Summary: Exposure to nano-and micro-sized plastics and hypoxic conditions can significantly affect the life traits, antioxidant system, and gene expression in marine rotifers, with nano-sized plastics having a particularly pronounced deleterious effect.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Yoseop Lee, Min-Sub Kim, Jordan Jun Chul Park, Young Hwan Lee, Jae-Seong Lee
Summary: This study investigates the multigenerational effects of co-exposure to hypoxia and nano- or micro-sized plastics (NMPs) in marine rotifers. The results show that combined exposure to NMPs and hypoxia leads to decreased fecundity and increased production of reactive oxygen species (ROS). The hypoxia-inducible factor (HIF) pathway and circadian clock genes are also upregulated in response to NMP exposure. Furthermore, the study highlights the synergistic deleterious effects of nano-sized plastics, suggesting that size-dependent toxicity plays a major role in the effects of hypoxia and NMP co-exposure.
MARINE POLLUTION BULLETIN
(2022)
Article
Engineering, Environmental
Xuan Li, Lin Lu, Shaoguo Ru, Junho Eom, Dong Wang, Samreen, Jun Wang
Summary: This study investigated the impacts of micro/nanoplastics (MPs/NPs) on marine rotifer, and found that 70 nm NPs significantly suppressed population growth and negatively affected life-history traits. The smaller the size of the plastic particles, the stronger the toxicity to the rotifers. The study also proposed that metabolomics was powerful to explore the toxicity mechanisms of MPs/NPs.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Chemical
Tulip Chakraborty, Dharavi Balusani, Scott Smith, Domenico Santore, John Walton, George Nakhla, Madhumita B. Ray
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
Article
Engineering, Environmental
Holly E. Gray, Tony Powell, Suyoung Choi, D. Scott Smith, Wayne J. Parker
Article
Environmental Sciences
Anne Cremazy, Kevin Brix, D. Scott Smith, Weibin Chen, Martin Grosell, Christian E. Schlekat, Emily R. Garman, Elizabeth T. Middleton, Chris M. Wood
INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT
(2020)
Article
Environmental Sciences
Ora E. Johannsson, Marcio S. Ferreira, D. Scott Smith, Anne Cremazy, Chris M. Wood, Adalberto L. Val
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Yuki Audette, D. Scott Smith, Christopher T. Parsons, Weibin Chen, Fereidoun Rezanezhad, Philippe Van Cappellen
Article
Environmental Sciences
D. Scott Smith, R. Nasir, Wayne Parker, A. Peters, G. Merrington, R. van Egmond, S. Lofts
Summary: The study compared WHAM predictions with measured ionic silver in diverse DOM, capturing the variability within model uncertainty. WHAM significantly underestimated silver binding in sewage samples, proposing a revised empirical model to account for sewage-specific binding sites. It is suggested that as sewage organic matter degrades, WHAM may better model the form.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Soil Science
Yuki Audette, James G. Longstaffe, Adam W. Gillespie, D. Scott Smith, R. Paul Voroney
Summary: The study compared the chemical properties of organic matter in turkey litter compost, source-separated organic compost, and biosolid pellets. It validated the use of humic acids for analyzing the functionality of OM and found that functionality and stability are highly dependent on the source of OM.
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
(2021)
Article
Chemistry, Analytical
Sasa Marcinek, Arnaud Chapoulie, Pascal Salaun, Scott Smith, Dario Omanovic
Summary: This study re-evaluated the applicability of Cu-ISE for measuring Cu-free in seawater, successfully addressing the challenge of measuring Cu-free under different total Cu concentrations through meta-calibration using the Gompertz function, providing a new method for the direct determination of free Cu ion concentration in seawater at levels relevant for coastal waters.
Article
Engineering, Environmental
Ora E. Johannsson, Marcio S. Ferreira, D. Scott Smith, Chris M. Wood, Adalberto L. Val
Summary: The study found that oxygen concentration and light spectral composition affect the photo-oxidation processes of dissolved organic carbon. Near-anoxia decreases absorbance and fluorescence indices, and changes in absorbance can still occur even under reduced sunlight if oxygen is present. Larger molecules are broken down near the water's surface, while medium to smaller molecules continue to be processed at depth.
Article
Environmental Sciences
Alexandria Loveridge, D. Scott Smith, James C. McGeer
Summary: The demand for rare earth elements (REEs) is increasing, leading to environmental exposure concerns. This study evaluated the acute toxicity of Thulium (Tm) to Hyalella azteca and the potential for toxicity modification by dissolved organic matter (DOM) and certain cations (Ca2+, Mg2+, Na+). Results showed that Tm toxicity was not affected by cationic competition, while DOM provided significant protection against Tm toxicity. This research contributes to understanding Tm toxicity and the importance of considering dissolved organic matter in assessing the environmental risk of REEs.
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2021)
Article
Chemistry, Physical
Weibin Chen, Celine Gueguen, D. Scott Smith, Josep Galceran, Jaume Puy, Encarna Companys
Summary: The Conditional Affinity Spectrum (CAS) is crucial for describing binding site heterogeneity of natural organic matter. The numerical method FOCUS is compared with the analytical solution of CAS based on the NICA model for H and Pb binding, showing differences in CAS distribution features. FOCUS-CAS can describe strong metal-binding sites that NICA-CAS cannot, making it a suitable alternative.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Biochemistry & Molecular Biology
Tamzin A. Blewett, Erin M. Leonard, Chris N. Glover, Grant B. McClelland, Chris M. Wood, James C. McGeer, Robert C. Santore, D. Scott Smith
Summary: This study found that naturally sourced dissolved organic carbon (DOC) did not limit nickel (Ni) accumulation in sea urchin larvae, but instead modified the bioavailability of Ni through indirect effects or the absorption of DOC-Ni complexes. Additionally, there was evidence for regulation of Ni accumulation in later-stage embryos, suggesting that known relationships between Ni speciation, bioavailability, and bioreactivity may not hold for natural marine DOC samples in sea urchin models.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
(2021)
Article
Zoology
Helen Sadauskas-Henrique, D. Scott Smith, Adalberto L. Val, Chris M. Wood
Summary: Previous studies have shown that the properties of natural dissolved organic carbon (DOC) molecules affect the osmoregulatory abilities of zebrafish in acidic water environments, resulting in varied effects on gill physiology due to different DOC sources.
JOURNAL OF EXPERIMENTAL ZOOLOGY PART A-ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY
(2021)
Meeting Abstract
Chemistry, Multidisciplinary
Dirk Tomandl, Scott Smith, Jeremy Wilmot
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Soil Science
Yuki Audette, D. Scott Smith, Christopher T. Parsons, James Longstaffe, Weibin Chen, Fereidoun Rezanezhad, Les J. Evans, Philippe Van Cappellen
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
(2019)