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Simionov IA, Călmuc M, Iticescu C, Călmuc V, Georgescu PL, Faggio C, Petrea ŞM. Human health risk assessment of potentially toxic elements and microplastics accumulation in products from the Danube River Basin fish market. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 104:104307. [PMID: 37914033 DOI: 10.1016/j.etap.2023.104307] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 09/03/2023] [Accepted: 10/26/2023] [Indexed: 11/03/2023]
Abstract
The present study aimed to quantify the concentration levels of potentially toxic elements (PTEs) such as aluminum, arsenic, cadmium, chromium, copper, nickel, lead, zinc, and mercury, as well as microplastics occurrence in various tissues of fish and seafood species, commercialized in the Lower Danube River Basin. A health risk assessment analysis was performed based on the PTEs concentration levels in the muscle tissue. Estimated daily intake (EDI), target hazard quotient (THQ), hazard index (HI), and target cancer risk (TR) of PTEs were calculated. It was observed that the species within the seafood category registered the highest levels of PTEs. For instance, in the muscle tissue of bivalve Mytilus galloprovincialis (from the Black Sea), the highest value was observed in the case of Zn (37.693 mg/kg), and the presence of polystyrene polymer was identified. The values associated with EDI, THQ, HI, and TR of PTE exposure were significantly lower than 1.
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Affiliation(s)
- Ira-Adeline Simionov
- Rexdan Research Infrastructure, "Dunarea de Jos" University Galati, 800008 Galati, Romania; Department of Food Science, Food Engineering, Biotechnologies and Aquaculture, "Dunarea de Jos" University Galati, 800008 Galati, Romania
| | - Mădălina Călmuc
- Rexdan Research Infrastructure, "Dunarea de Jos" University Galati, 800008 Galati, Romania
| | - Cătălina Iticescu
- Rexdan Research Infrastructure, "Dunarea de Jos" University Galati, 800008 Galati, Romania; Department of Chemistry, Physics and Environment, "Dunarea de Jos" University Galati, 800008 Galati, Romania.
| | - Valentina Călmuc
- Rexdan Research Infrastructure, "Dunarea de Jos" University Galati, 800008 Galati, Romania
| | - Puiu-Lucian Georgescu
- Rexdan Research Infrastructure, "Dunarea de Jos" University Galati, 800008 Galati, Romania; Department of Chemistry, Physics and Environment, "Dunarea de Jos" University Galati, 800008 Galati, Romania
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy
| | - Ştefan-Mihai Petrea
- Rexdan Research Infrastructure, "Dunarea de Jos" University Galati, 800008 Galati, Romania; Department of Food Science, Food Engineering, Biotechnologies and Aquaculture, "Dunarea de Jos" University Galati, 800008 Galati, Romania
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Mauffret A, Chouvelon T, Wessel N, Cresson P, Bănaru D, Baudrier J, Bustamante P, Chekri R, Jitaru P, Le Loc'h F, Mialet B, Vaccher V, Harmelin-Vivien M. Trace elements, dioxins and PCBs in different fish species and marine regions: Importance of the taxon and regional features. ENVIRONMENTAL RESEARCH 2023; 216:114624. [PMID: 36309213 DOI: 10.1016/j.envres.2022.114624] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 09/27/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Chemical contaminant concentrations in wild organisms are used to assess environmental status under the European Marine Strategy Framework Directive. However, this approach is challenged by the complex intra- and inter-species variability, and the different regional features. In this study, concentrations in trace elements (As, Cd, Hg and Pb), polychlorinated biphenyls (PCBs), polychlorodibenzo-para-dioxines (PCDDs) and polychlorodibenzofuranes (PCDFs) were monitored in 8 fish species sampled on the continental shelf of three French regions: the Eastern English Channel (EEC) and Bay of Biscay (BoB) in the Northeast Atlantic Ocean, and the Gulf of Lions (GoL) in Western Mediterranean Sea. Our objectives were to identify species or regions more likely to be contaminated and to assess how to take this variability into account in environmental assessment. While concentrations were higher in benthic and demersal piscivores, PCB and PCDD/F concentrations (lipid-weight) were similar in most teleost species. For Cd, Hg and Pb, the trophic group accumulating the highest concentrations depended on the contaminant and region. Concentrations in Hg, PCBs and PCDD/Fs were higher in the EEC and/or GoL than in BoB. Cadmium and Pb concentrations were highest in the BoB. Lipid content accounted for 35%-84% of organic contaminant variability. Lipid normalisation was employed to enhance robustness in the identification of spatial patterns. Contaminant patterns in chondrichthyans clearly differed from that in teleosts. In addition, trophic levels accounted for ≤1% and ≤33% of the contaminant variability in teleost fishes in the EEC and BoB, respectively. Therefore, developing taxa-specific thresholds might be a more practical way forward for environmental assessment than normalisation to trophic levels.
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Affiliation(s)
- Aourell Mauffret
- Ifremer, CCEM, Rue de L'île d'Yeu, BP 21105, 44311 Nantes Cedex 03, France.
| | - Tiphaine Chouvelon
- Ifremer, CCEM, Rue de L'île d'Yeu, BP 21105, 44311 Nantes Cedex 03, France; Observatoire Pelagis, UAR 3462 La Rochelle Université/CNRS, 5 Allées de L'Océan, 17000 La Rochelle, France
| | - Nathalie Wessel
- Ifremer, ODE/Vigies, Rue de L'île d'Yeu, BP 21105, 44311 Nantes Cedex 03, France
| | - Pierre Cresson
- Ifremer, Channel and North Sea Fisheries Research Unit, 50 Quai Gambetta, BP 699, 62321 Boulogne sur Mer, France
| | - Daniela Bănaru
- Aix-Marseille Université, Université de Toulon, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UM110, Marseille, France
| | - Jérôme Baudrier
- Ifremer, Biodivenv, 79 Route de Pointe-Fort, 97 231 Le Robert, France
| | - Paco Bustamante
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS, La Rochelle Université, 2 rue Olympe de Gouges 17000 La Rochelle, France; Institut Universitaire de France (IUF), 1 rue Descartes 75005 Paris, France
| | - Rachida Chekri
- Anses, Laboratory for Food Safety, 14 Rue Pierre et Marie Curie, 94700 Maisons-Alfort, France
| | - Petru Jitaru
- Anses, Laboratory for Food Safety, 14 Rue Pierre et Marie Curie, 94700 Maisons-Alfort, France
| | - François Le Loc'h
- University of Brest, CNRS, IRD, Ifremer, LEMAR, 29280 Plouzane, France
| | - Benoit Mialet
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS, La Rochelle Université, 2 rue Olympe de Gouges 17000 La Rochelle, France
| | - Vincent Vaccher
- Oniris, INRAE, UMR 1329, Laboratoire d'Étude des Résidus et Contaminants dans Les Aliments (LABERCA), F-44307, Nantes, France
| | - Mireille Harmelin-Vivien
- Aix-Marseille Université, Université de Toulon, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UM110, Marseille, France
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Fang T, Liang Y, Yang K, Zhao X, Gao N, Li J, Lu W, Cui K, Li H. Benefit-risk assessment of consuming fish and shrimp from a large eutrophic freshwater lake, China. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Lescord GL, Johnston TA, Ponton DE, Amyot M, Lock A, Gunn JM. The speciation of arsenic in the muscle tissue of inland and coastal freshwater fish from a remote boreal region. CHEMOSPHERE 2022; 308:136140. [PMID: 36041531 DOI: 10.1016/j.chemosphere.2022.136140] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/09/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Elevated concentrations of total arsenic (As) have been reported in boreal freshwater fish in both human-impacted and relatively pristine areas. We assessed the arsenic speciation profiles in muscle tissue of six fish species (n = 300) sampled from nine locations across a remote freshwater watershed in northern Ontario, Canada, extending from inland headwater lakes to the coastal marine confluence. Of the five arsenic species measured, only arsenobetaine (AsB) and dimethylarsinic acid (DMA) were detected in these fish. Riverine fish had up to 10-fold higher total [As] when compared to lacustrine fish. On average, these riverine fish also had higher percentages of AsB (%AsB, 60 ± 26%) and lower percentages of unmeasured arsenic (%UNM, 20 ± 21%), compared to lacustrine fish (28 ± 18% and 52 ± 21% %AsB and %UNM, respectively). DMA percentages (%DMA) were relatively consistent across the watershed, averaging 20 ± 21% across all fish. We examined ecological drivers of As speciation and found that %AsB increased slightly with fish weight in large-body predatory fish, but not in forage fish or insectivores. Furthermore, %AsB was positively related to trophic elevation (inferred from δ15N) in lacustrine fish across 3 out of 4 communities and within some populations. Lastly, riverine fish with a more marine-based diet had markedly higher %AsB when compared to fish with more freshwater-based diets, indicating an effect of anadromy on arsenic speciation. Overall, knowledge on arsenic speciation in freshwater fish has been limited and these results indicate potential drivers that can be considered in future studies. Furthermore, the absence of toxic inorganic As species in these boreal fish is an important consideration for future environmental monitoring practices and risk assessments, some of which assume 10-20% of total [As] in fish is present as toxic inorganic As. Additional studies on As bioaccumulation and biotransformation are needed in freshwater systems, particularly at the base of aquatic food webs.
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Affiliation(s)
- Gretchen L Lescord
- Wildlife Conservation Society Canada, Sudbury, ON, Canada; Laurentian University, Vale Living with Lakes Centre, Sudbury, ON, Canada.
| | - Thomas A Johnston
- Laurentian University, Vale Living with Lakes Centre, Sudbury, ON, Canada; Ontario Ministry of Northern Development, Mines, Natural Resources and Forestry, Sudbury, ON, Canada
| | - Dominic E Ponton
- Département des Sciences Biologiques, Université de Montréal, Montréal, QC, Canada
| | - Marc Amyot
- Département des Sciences Biologiques, Université de Montréal, Montréal, QC, Canada
| | - Alan Lock
- Laurentian University, Vale Living with Lakes Centre, Sudbury, ON, Canada
| | - John M Gunn
- Laurentian University, Vale Living with Lakes Centre, Sudbury, ON, Canada
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Yuan Y, Wang Z, Feng J, Li R, Cheng X, Li K. Experiments about the removal of supersaturated total dissolved gas from water environment by activated carbon adsorption. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:77809-77820. [PMID: 35688979 DOI: 10.1007/s11356-022-21181-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Water environment conditions directly support aquatic life. It is important to maintain a suitable water environment to improve the efficient use of water resources. Supersaturation of total dissolved gas (TDG) in the water will cause fish suffer from gas bubble disease and even mortalities. Measures should be taken to mitigate the adverse effect of supersaturated TDG. Considering the adsorption effect of porous medium, activated carbon (AC) was utilized in this experiment to explore the effect of AC on supersaturated TDG removal. The effects of AC properties, AC dosage, and initial TDG saturation were investigated. The results showed that adding AC in the water could effectively accelerate the supersaturated TDG removal rate, which was positively correlated with the AC specific surface area and dosage. Meanwhile, the average dissipation rate of TDG increased and then decreased with increasing initial TDG saturation. The adsorption characteristics of AC on supersaturated TDG were also explored. The maximum equilibrium adsorption capacity and removal rate were 0.262 mg/g and 48.5% respectively. It was concluded that the adsorption process of AC on supersaturated TDG conformed to the Langmuir equation and pseudo-first-order kinetic model. Recycling test indicated that the used AC could be reused after drying. It was hoped that this research could contribute to improving water environment and ensuring the healthy development of the aquatic livings.
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Affiliation(s)
- Youquan Yuan
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Zhenhua Wang
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Jingjie Feng
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, Sichuan, China.
| | - Ran Li
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Xiaolong Cheng
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Kefeng Li
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, Sichuan, China
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Thai VN, Dehbandi R, Fakhri Y, Sarafraz M, Nematolahi A, Dehghani SS, Gholizadeh A, Mousavi Khaneghah A. Potentially Toxic Elements (PTEs) in the Fillet of Narrow-Barred Spanish Mackerel (Scomberomorus commerson): a Global Systematic Review, Meta-analysis and Risk Assessment. Biol Trace Elem Res 2021; 199:3497-3509. [PMID: 33180263 DOI: 10.1007/s12011-020-02476-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 11/03/2020] [Indexed: 10/23/2022]
Abstract
The contamination of seafood like narrow-barred Spanish mackerel (Scomberomorus commerson) fillets by potentially toxic elements (PTEs) has converted to worldwide health concerns. In this regard, the related citations regarding the concentration of PTEs in fillets of narrow-barred Spanish mackerel were collected through some of the international databases such as Scopus, Cochrane, PubMed, and Scientific Information Database (SID) up to 10 March 2020. The concentration of PTEs in fillets of narrow-barred Spanish mackerel fish was meta-analyzed and the health risk (non-carcinogenic risk) was estimated by the total target hazard quotient (TTHQ). The meta-analysis of data indicated that the rank order of PTEs in fillet of narrow-barred Spanish mackerel was Fe (10,853.29 μg/kg-ww) > Zn (4007.00 μg/kg-ww) > Cu (1005.66 μg/kg-ww) > total Cr (544.14 μg/kg-ww) > Mn (515.93 μg/kg-ww) > Ni (409.90 μg/kg-ww) > Pb (180.99 μg/kg-ww) > As (93.11 μg/kg-ww) > methyl Hg (66.60 μg/kg-ww) > Cd (66.03 μg/kg-ww). The rank order of health risk assessment based on the country by the aid of TTHQ for adult consumers was Malaysia (0.22251) > Philippines (0.21912) > Egypt (0.08684) > Taiwan (0.07430) > Bahrain (0.04893) > Iran (0.03528) > China (0.00620) > Pakistan (0.00316) > Yemen (0.00157) > India (0.00073). In addition, the rank order of health risk assessment based on the country by the aid of TTHQ for child consumers was Malaysia (1.03838) > Philippines (1.02257) > Egypt (0.40523) > Taiwan (0.34674) > Bahrain (0.22832) > Iran (0.16466) > China (0.02892) > Pakistan (0.01474) > Yemen (0.00731) > India (0.00340). Therefore, the children in Malaysia and the Philippines were at considerable non-carcinogenic risk. Hence, approaching the recommended control plans in order to decrease the non-carcinogenic risk associated with the ingestion of PTEs via the consumption of narrow-barred Spanish mackerel fish fillets is crucial.
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Affiliation(s)
- Van Nam Thai
- Ho Chi Minh City University of Technology (HUTECH) 475A, Dien Bien Phu, Ward 25, Binh Thanh District, Ho Chi Minh City, Vietnam
| | - Reza Dehbandi
- Department of Environmental Health Engineering, Health Sciences Research Center, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran
| | - Yadolah Fakhri
- Food Health Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
| | - Mansour Sarafraz
- Environmental Health Research Center, Department of Environmental Health Engineering, Faculty of Health, Golestan University of Medical Sciences, Gorgan, Iran
| | - Amene Nematolahi
- Department of Food Safety and Hygiene, School of Health, Fasa University of Medical Sciences, Fasa, Iran
| | - Seyedeh Samaneh Dehghani
- Department of Environmental Health Engineering, Student Research Committee, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Abdolmajid Gholizadeh
- Department of Environmental Health Engineering, School of Public Health, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Amin Mousavi Khaneghah
- Department of Food Science, Faculty of Food Engineering, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
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Albuquerque FEA, Herrero-Latorre C, Miranda M, Barrêto Júnior RA, Oliveira FLC, Sucupira MCA, Ortolani EL, Minervino AHH, López-Alonso M. Fish tissues for biomonitoring toxic and essential trace elements in the Lower Amazon. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 283:117024. [PMID: 33857879 DOI: 10.1016/j.envpol.2021.117024] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 06/12/2023]
Abstract
Brazilian soils can have high concentrations of toxic elements, mainly mercury (Hg) and arsenic (As), metals also associated with anthropogenic activities (e.g. intensive agriculture, mining, deforestation and hydroelectric plants). This can lead to large amounts of these elements reaching and/or being mobilized in the aquatic ecosystem, which constitutes a serious threat to the environment and to the health of local populations. Thus, we evaluate the feasibility of analyzing the tissues of freshwater fish species for monitoring toxic and trace element accumulation within the aquatic ecosystem in the Lower Amazon, Brazil. Two fish species were considered: Cichla temensis (Tucunaré), a carnivorous species, and Pterygoplichthys pardalis (Acari), a detritivorous species. Samples of liver and muscle from both species were evaluated in relation to their potential use for biomonitoring purposes. The study findings clearly demonstrate the value these fish species and tissues, particularly liver, for biomonitoring toxic and trace element concentrations in the aquatic environment across the study region. While Tucunaré liver proved the best option for biomonitoring elements that accumulate through the food chain (e.g. Hg), Acari liver better reflected elements that typically accumulate in the sediments (e.g. As). Moreover, the trace element profiles, determined using chemometric (multivariate) techniques, differed greatly in specimens from waters in the Andean mountain range (sampling sites located in the main course of the Amazon River) with high sediment concentrations, and in specimens from the Guyana and Brazilian shields (Porto Trombetas on the Trombetas River and Itaituba on the Tapajós River). The findings also indicate that deposition of elements in freshwater fish in this area is mainly associated with the geological origin of the soils and that large amounts of toxic elements can reach the aquatic ecosystem due to anthropogenic activities, thereby posing a serious danger to the environment and the health of the riverside communities.
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Affiliation(s)
- Fabio Edir Amaral Albuquerque
- Laboratory of Animal Health, LARSANA, Federal University of Western Pará, UFOPA, Rua Vera Paz, S/n, Salé, CEP 68040-255, Santarém, PA, Brazil; Department of Animal Pathology, Veterinary Faculty, University of Santiago de Compostela, 27002, Lugo, Spain
| | - Carlos Herrero-Latorre
- Research Institute on Chemical and Biological Analyses (IIAQBUS), Department of Analytical Chemistry, Nutrition and Bromatology, Faculty of Sciences, University of Santiago de Compostela, 27002, Lugo, Spain
| | - Marta Miranda
- Department of Anatomy, Animal Production and Clinical Veterinary Sciences, Veterinary Faculty, University of Santiago de Compostela, 27002, Lugo, Spain
| | - Raimundo Alves Barrêto Júnior
- Department of Animal Science, Federal Rural University of the Semiarid Region (UFERSA), Av. Francisco Mota, S/nº - Bairro Pres. Costa e Silva, CEP 59625-900, Mossoró, RN, Brazil
| | - Francisco Leonardo Costa Oliveira
- Department of Clinical Science, College of Veterinary Medicine and Animal Science, University of Sao Paulo (FMVZ/USP), Av. Prof. Orlando Marques de Paiva, 87, Cidade Universitária, CEP 05508-270, São Paulo, SP, Brazil
| | - Maria Cláudia Araripe Sucupira
- Department of Clinical Science, College of Veterinary Medicine and Animal Science, University of Sao Paulo (FMVZ/USP), Av. Prof. Orlando Marques de Paiva, 87, Cidade Universitária, CEP 05508-270, São Paulo, SP, Brazil
| | - Enrico Lippi Ortolani
- Department of Clinical Science, College of Veterinary Medicine and Animal Science, University of Sao Paulo (FMVZ/USP), Av. Prof. Orlando Marques de Paiva, 87, Cidade Universitária, CEP 05508-270, São Paulo, SP, Brazil
| | - Antonio Humberto Hamad Minervino
- Laboratory of Animal Health, LARSANA, Federal University of Western Pará, UFOPA, Rua Vera Paz, S/n, Salé, CEP 68040-255, Santarém, PA, Brazil.
| | - Marta López-Alonso
- Department of Animal Pathology, Veterinary Faculty, University of Santiago de Compostela, 27002, Lugo, Spain
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Donadt C, Cooke CA, Graydon JA, Poesch MS. Biological Factors Moderate Trace Element Accumulation in Fish along an Environmental Concentration Gradient. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:422-434. [PMID: 33201525 DOI: 10.1002/etc.4926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/20/2020] [Accepted: 11/05/2020] [Indexed: 06/11/2023]
Abstract
Trace elements can accumulate in aquatic food webs, becoming potentially hazardous to wildlife and human health. Whereas many studies have examined mercury dynamics in freshwater environments, evidence for the bioaccumulative potential of other trace elements (e.g., arsenic) is conflicting. Trace element concentrations found in surface water of the Red Deer River, Alberta, Canada, have raised concern for potential accumulation in aquatic biota. We investigated fish from this river to better understand the influence of biological and environmental factors in trace element bioaccumulation. We analyzed 20 trace elements, and stable nitrogen (δ15 N) and carbon (δ13 C) isotopes, in the muscle tissue of 8 species. Zinc, selenium, arsenic, chromium, and nickel were detected in the majority of fish at low concentrations. However, mercury was detected in all fish and often exceeded criteria for the protection of consumers. Body size was often positively correlated with trace element concentrations. In addition, δ15 N and δ13 C were correlated to mercury and arsenic concentrations, indicating that mercury biomagnifies whereas arsenic biodiminishes. Spatial patterns of fish trace element concentrations did not reflect differences in surface water concentrations. These findings indicate that fish trace element concentrations are primarily moderated by biological factors, such as trophic position and body size, and are not locally restricted to areas of relatively high environmental concentrations in the Red Deer River. Environ Toxicol Chem 2021;40:422-434. © 2020 SETAC.
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Affiliation(s)
- Caitlyn Donadt
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
| | - Colin A Cooke
- Alberta Environment and Parks, Edmonton, Alberta, Canada
- Department of Earth and Atmospheric Sciences, University of Alberta, Alberta, Canada
| | | | - Mark S Poesch
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
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