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Cai J, Zeng Y, Zhu Y, Zheng Q, Tian L, Xie Q, Zheng X. Trophic stoichiometry of macroelements and metals in a terrestrial food web. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 362:124993. [PMID: 39303937 DOI: 10.1016/j.envpol.2024.124993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Revised: 09/07/2024] [Accepted: 09/17/2024] [Indexed: 09/22/2024]
Abstract
In order to understand the transfer of macroelements and toxic metals in the terrestrial food web, barn swallows, terrestrial frogs, and insects were collected from farmlands in the Leizhou Peninsula, and analyzed for macroelements carbon (C), nitrogen (N), phosphorus (P), and sulfur (S) and trace metals nickel (Ni), zinc (Zn), selenium (Se), copper (Cu), chromium (Cr), cadmium (Cd), lead (Pb), and mercury (Hg). The multi-element ecological stoichiometry was discussed to trace the food web flow of nutrients and toxicants. The percentage contents of C, N, P, and S were 35.43-59.91%, 6.89-12.11%, 0.49-4.66%, and 0.44-2.19%, respectively. The concentrations of Ni, Zn, Se, Cu, Cr, Cd, Pb, and Hg were 0.163-116 mg/kg, 38.7-227 mg/kg, 0.0453-3.82 mg/kg, 3.11-141 mg/kg, not detected-79.6 mg/kg, 0.0203-0.358 mg/kg, 0.148-4.57 mg/kg, and 0.00159-1.46 mg/kg, respectively. Organisms at high trophic levels had higher contents of N, P, and S, and lower contents of C. Significant correlations were observed between δ15N and ratios of C: N, C: P, C: S, N: P, N: S, and S: P, indicating selective transfer of biogenic elements for predators in the terrestrial food web. Most metals including Ni, Zn, Se, Cu, Cr, Pb, and Hg had biomagnification factors and trophic magnification factors higher than 1, because the whole body of organisms rather than tissues were used. The negative correlations between the detoxification ratios of Se: X (each toxic metal) and metal concentrations suggest potential adverse effect of metals on terrestrial organisms.
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Affiliation(s)
- Junjie Cai
- College of Resources and Environment, South China Agricultural University, Guangzhou, 510642, China
| | - Ying Zeng
- College of Resources and Environment, South China Agricultural University, Guangzhou, 510642, China
| | - Yujing Zhu
- College of Resources and Environment, South China Agricultural University, Guangzhou, 510642, China
| | - Qian Zheng
- College of Resources and Environment, South China Agricultural University, Guangzhou, 510642, China.
| | - Li Tian
- Life Science and Technology School, Lingnan Normal University, Zhanjiang, 524048, China; Mangrove Rare and Endangered Species Protection and Utilization Engineering Technology Research Center, Lingnan Normal University, Zhanjiang, 524048, China
| | - Qilai Xie
- College of Resources and Environment, South China Agricultural University, Guangzhou, 510642, China
| | - Xiaobo Zheng
- College of Resources and Environment, South China Agricultural University, Guangzhou, 510642, China.
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2
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Yurkowski DJ, McCulloch E, Ogloff WR, Johnson KF, Amiraux R, Basu N, Elliott KH, Fisk AT, Ferguson SH, Harris LN, Hedges KJ, Jacobs K, Loewen TN, Matthews CJD, Mundy CJ, Niemi A, Rosenberg B, Watt CA, McKinney MA. Mercury accumulation, biomagnification, and relationships to δ 13C, δ 15N and δ 34S of fishes and marine mammals in a coastal Arctic marine food web. MARINE POLLUTION BULLETIN 2023; 193:115233. [PMID: 37421916 DOI: 10.1016/j.marpolbul.2023.115233] [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: 05/05/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/10/2023]
Abstract
Combining mercury and stable isotope data sets of consumers facilitates the quantification of whether contaminant variation in predators is due to diet, habitat use and/or environmental factors. We investigated inter-species variation in total Hg (THg) concentrations, trophic magnification slope between δ15N and THg, and relationships of THg with δ13C and δ34S in 15 fish and four marine mammal species (249 individuals in total) in coastal Arctic waters. Median THg concentration in muscle varied between species ranging from 0.08 ± 0.04 μg g-1 dw in capelin to 3.10 ± 0.80 μg g-1 dw in beluga whales. Both δ15N (r2 = 0.26) and δ34S (r2 = 0.19) best explained variation in log-THg across consumers. Higher THg concentrations occurred in higher trophic level species that consumed more pelagic-associated prey than consumers that rely on the benthic microbial-based food web. Our study illustrates the importance of using a multi-isotopic approach that includes δ34S when investigating trophic Hg dynamics in coastal marine systems.
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Affiliation(s)
- David J Yurkowski
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Department of Biological Science, University of Manitoba, Winnipeg, Manitoba, Canada.
| | - Elena McCulloch
- Department of Natural Resource Sciences, McGill University, Ste. Anne de Bellevue, Quebec, Canada
| | - Wesley R Ogloff
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Integrative Biology, University of Windsor, Windsor, Ontario, Canada
| | - Kelsey F Johnson
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada
| | - Rémi Amiraux
- Centre for Earth Observation Science, Department of Environment and Geography, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Niladri Basu
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Canada
| | - Kyle H Elliott
- Department of Natural Resource Sciences, McGill University, Ste. Anne de Bellevue, Quebec, Canada
| | - Aaron T Fisk
- School of the Environment, University of Windsor, Windsor, Ontario, Canada
| | - Steven H Ferguson
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Department of Biological Science, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Les N Harris
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada
| | - Kevin J Hedges
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada
| | - Kevin Jacobs
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada
| | - Tracey N Loewen
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada
| | - Cory J D Matthews
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Department of Biological Science, University of Manitoba, Winnipeg, Manitoba, Canada
| | - C J Mundy
- Centre for Earth Observation Science, Department of Environment and Geography, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Andrea Niemi
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada
| | - Bruno Rosenberg
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada
| | - Cortney A Watt
- Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Department of Biological Science, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Melissa A McKinney
- Department of Natural Resource Sciences, McGill University, Ste. Anne de Bellevue, Quebec, Canada
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Kong X, Zhang J, Li Y, Otsuka S, Liu Q, He Q. Selenium in the liver facilitates the biodilution of mercury in the muscle of Planiliza haematocheilus in the Jiaozhou Bay, China. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 258:114981. [PMID: 37163907 DOI: 10.1016/j.ecoenv.2023.114981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/25/2023] [Accepted: 05/02/2023] [Indexed: 05/12/2023]
Abstract
There are increasing evidences that the biodilution effect can significantly reduce the biomagnification of mercury (Hg) in fish. The significant antagonism of selenium (Se) -Hg may have a potential diluting effect on Hg in fish; however, there is still lack of knowledge on such effect. To reveal the Se-Hg interaction and its role in controlling the biodilution effect of Hg, we investigated levels of Hg and Se in the muscle and liver of redlip mullet from Jiaozhou Bay, China, an urbanized semi-enclosed bay highly impacted by human activities. In general, Hg levels in fish muscle were significantly negatively correlated to the levels of Se in the liver and fish size for fish with a size of < 200 mm, indicating that the antagonistic effect of Se on Hg increased with fish growth. This relationship was not significant for fish with a size of > 200 mm, possibly because the normal metabolism of Hg in muscle was hindered by homeostatic regulation or physiological activities such as gonadal development in vivo. Furthermore, the molar ratio of Se in the liver/Hg in the muscle was significantly increasing with Se/Hg in the liver, suggesting that the liver may be the key organ involved in Se-Hg antagonism. Moreover, both ratios continued to decrease with increasing fish size, implying that the antagonistic effect weakens with fish growth. These results indicate that Hg sequestration by liver may be a key mechanism of Se-Hg antagonism in fish and function as a driver for the biodilution effect of Hg, especially at a size of < 200 mm. These findings are further supported by the established linear model of Se-Hg antagonism at different developmental stages.
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Affiliation(s)
- Xiangyu Kong
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Jing Zhang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Faculty of Science, Academic Assembly, University of Toyama, 3190 Gofuku, Toyama 9308555, Japan.
| | - Yanbin Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
| | - Shinpei Otsuka
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 9308555, Japan
| | - Qian Liu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Qian He
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
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Tomza-Marciniak A, Pilarczyk B, Drozd R, Pilarczyk R, Juszczak-Czasnojć M, Havryliak V, Podlasińska J, Udała J. Selenium and mercury concentrations, Se:Hg molar ratios and their effect on the antioxidant system in wild mammals. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 322:121234. [PMID: 36758931 DOI: 10.1016/j.envpol.2023.121234] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
The aim of this study was to a) evaluate the concentration of Se and Hg and their relationship in the tissues of 4 species of wild mammals, including Se:Hg molar ratios, and b) evaluate the effect of the analysed elements and their mutual proportions expressed as Se:Hg molar ratio, on the antioxidant system in the tissues of the tested animals. The study was performed on 31 animals belonging to four species: wild boar, red fox, roe deer, brown hare. Determination of Hg in liver, kidney and muscle of animals was performed using an AMA 254 mercury analyser. Total Se concentrations were determined using the spectrofluorometric method. In omnivores demonstrated higher Se concentrations in all analysed organs compared to the herbivores. The highest concentration of Hg was found in the kidneys of the tested animals, and the lowest in the muscles. High and moderate correlation between Se and Hg was observed in the liver of omnivorous, while in herbivores this correlation was weak. In all analysed samples, the Se:Hg molar ratios were above 1 (min: liver 5.9, max: kidney 110). Generally, the highest Se:Hg ratio values were found in kidney and the lowest in liver of tested animals. No significant correlation was found between GPx, GST and SOD activity and Se or Hg concentration in analysed organs. But it was observed that Se:Hg molar was negatively correlated with CAT activity in the most samples. The obtained results may suggest that omnivorous animals demonstrate greater Hg sequestration in the liver than herbivores, which has been proposed as one of the mechanisms of Se antagonistic action towards Hg. The ratio between Se and Hg, rather than the concentration of these elements in organs, affected the antioxidant status in the animal organism, specifically the CAT activity.
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Affiliation(s)
- Agnieszka Tomza-Marciniak
- Department of Animal Reproduction Biotechnology and Environmental Hygiene, West Pomeranian University of Technology, Szczecin, Janickiego 29, 71-270, Szczecin, Poland.
| | - Bogumiła Pilarczyk
- Department of Animal Reproduction Biotechnology and Environmental Hygiene, West Pomeranian University of Technology, Szczecin, Janickiego 29, 71-270, Szczecin, Poland
| | - Radosław Drozd
- Department of Microbiology and Biotechnology, West Pomeranian University of Technology, Szczecin, Al. Piastów 45, 70-311, Szczecin, Poland
| | - Renata Pilarczyk
- Laboratory of Biostatistics, West Pomeranian University of Technology, Szczecin, Janickiego 29, 71-270, Szczecin, Poland
| | - Marta Juszczak-Czasnojć
- Department of Animal Reproduction Biotechnology and Environmental Hygiene, West Pomeranian University of Technology, Szczecin, Janickiego 29, 71-270, Szczecin, Poland
| | - Viktoriia Havryliak
- Department of Technology of Biologically Active Substances, Pharmacy and Biotechnology, Institute of Chemistry and Chemical Technologies, Lviv Polytechnic National University, 79000, Lviv, Ukraine
| | - Joanna Podlasińska
- Department of Environmental Management, West Pomeranian University of Technology, Szczecin, Ul. Juliusza Słowackiego 17, 71-434, Szczecin, Poland
| | - Jan Udała
- Department of Animal Reproduction Biotechnology and Environmental Hygiene, West Pomeranian University of Technology, Szczecin, Janickiego 29, 71-270, Szczecin, Poland
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Selenium Status: Its Interactions with Dietary Mercury Exposure and Implications in Human Health. Nutrients 2022; 14:nu14245308. [PMID: 36558469 PMCID: PMC9785339 DOI: 10.3390/nu14245308] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022] Open
Abstract
Selenium is an essential trace element in humans and animals and its role in selenoprotein and enzyme antioxidant activity is well documented. Food is the principal source of selenium, and it is important that selenium status in the body is adequately maintained for physiological functions. There has been increasing attention on the role of selenium in mitigating the toxic effects of mercury exposure from dietary intake in humans. In contrast, mercury is a neurotoxin, and its continuous exposure can cause adverse health effects in humans. The interactions of selenium and mercury are multi-factorial and involve complex binding mechanisms between these elements at a molecular level. Further insights and understanding in this area may help to evaluate the health implications of dietary mercury exposure and selenium status. This review aims to summarise current information on the interplay of the interactions between selenium and mercury in the body and the protective effect of selenium on at-risk groups in a population who may experience long-term mercury exposure.
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6
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Takata N, Myburgh J, Botha A, Nomngongo PN. The importance and status of the micronutrient selenium in South Africa: a review. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:3703-3723. [PMID: 34708333 DOI: 10.1007/s10653-021-01126-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 10/09/2021] [Indexed: 06/13/2023]
Abstract
Selenium (Se) is a vital micronutrient with widespread biological action but leads to toxicity when taken in excessive amounts. The biological benefits of Se are mainly derived from its presence in active sites of selenoproteins such as glutathione peroxidase (GPx). An enzyme whose role is to protect tissues against oxidative stress by catalysing the reduction of peroxidase responsible for various forms of cellular damage. The benefits of Se can be harvested when proper regulations of its intake are used. In South Africa, Se distribution in people's diets and animals are low with socio-economic factors and heterogeneous spread of Se in soil throughout the country playing a significant role. The possible causes of low Se in soils may be influenced by underlying geological material, climatic conditions, and anthropogenic activities. Sedimentary rock formations show higher Se concentrations compared to igneous and metamorphic rock formations. Higher Se concentrations in soils dominates in humid and sub-humid areas of South Africa. Furthermore, atmospheric acid deposition dramatically influences the availability of Se to plants. The studies reviewed in this article have shown that atomic absorption spectroscopy (AAS) is the most utilised analytical technique for total Se concentration determination in environmental samples and there is a lack of speciation data for Se concentrations. Shortcomings in Se studies have been identified, and the future research directions of Se in South Africa have been discussed.
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Affiliation(s)
- Nwabisa Takata
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Doornfontein, 2028, South Africa
- National Metrology Institute of South Africa, CSIR Campus, Building 5, Meiring Naude Road, Brummeria, Pretoria, 0182, South Africa
| | - Jan Myburgh
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa
| | - Angelique Botha
- National Metrology Institute of South Africa, CSIR Campus, Building 5, Meiring Naude Road, Brummeria, Pretoria, 0182, South Africa
| | - Philiswa Nosizo Nomngongo
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Doornfontein, 2028, South Africa.
- Department of Science and Innovation (DSI)/National Research Foundation (NRF) South African Research Chair (SARChI): Nanotechnology for Water, University of Johannesburg, Doornfontein, 2028, South Africa.
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Arciszewski TJ, Hazewinkel RRO, Dubé MG. A critical review of the ecological status of lakes and rivers from Canada's oil sands region. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2022; 18:361-387. [PMID: 34546629 PMCID: PMC9298303 DOI: 10.1002/ieam.4524] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 09/19/2021] [Accepted: 09/20/2021] [Indexed: 05/05/2023]
Abstract
We synthesize the information available from the peer-reviewed literature on the ecological status of lakes and rivers in the oil sands region (OSR) of Canada. The majority of the research from the OSR has been performed in or near the minable region and examines the concentrations, flux, or enrichment of contaminants of concern (CoCs). Proximity to oil sands facilities and the beginning of commercial activities tend to be associated with greater estimates of CoCs across studies. Research suggests the higher measurements of CoCs are typically associated with wind-blown dust, but other sources also contribute. Exploratory analyses further suggest relationships with facility production and fuel use data. Exceedances of environmental quality guidelines for CoCs are also reported in lake sediments, but there are no indications of toxicity including those within the areas of the greatest atmospheric deposition. Instead, primary production has increased in most lakes over time. Spatial differences are observed in streams, but causal relationships with industrial activity are often confounded by substantial natural influences. Despite this, there may be signals associated with site preparation for new mines, potential persistent differences, and a potential effect of petroleum coke used as fuel on some indices of health in fish captured in the Steepbank River. There is also evidence of improvements in the ecological condition of some rivers. Despite the volume of material available, much of the work remains temporally, spatially, or technically isolated. Overcoming the isolation of studies would enhance the utility of information available for the region, but additional recommendations for improving monitoring can be made, such as a shift to site-specific analyses in streams and further use of industry-reported data. Integr Environ Assess Manag 2022;18:361-387. © 2021 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
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Affiliation(s)
- Tim J. Arciszewski
- Environmental Stewardship DivisionAlberta Environment and ParksCalgaryAlbertaCanada
| | | | - Monique G. Dubé
- Environmental Stewardship DivisionAlberta Environment and ParksCalgaryAlbertaCanada
- Present address: Cumulative Effects Environmental Inc.CalgaryAlbertaCanada
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8
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Teunen L, Belpaire C, De Boeck G, Blust R, Bervoets L. Mercury accumulation in muscle and liver tissue and human health risk assessment of two resident freshwater fish species in Flanders (Belgium): a multilocation approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:7853-7865. [PMID: 34480314 DOI: 10.1007/s11356-021-16215-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
Detrimental effects of chemical pollution-primarily caused by human activities-on aquatic ecosystems have increasingly gained attention. Because of its hydrophobic qualities, mercury is prone to easily bioaccumulate and biomagnify through the food chain, decreasing biodiversity and eventually also affecting humans. In the present study, accumulated mercury concentrations were measured in muscle and liver tissue of perch (Perca fluviatilis) and European eel (Anguilla anguilla) collected at 26 sampling locations in Flemish (Belgian) waterbodies, allowing a comparison of these species within a variety of environmental situations. Furthermore, effects of size and weight have been assessed, expected to influence accumulation and storage of pollutants. Mercury concentrations in perch ranged up to 1.7 μg g-1 dw (median: 0.29 μg g-1 dw) in muscle and from 0.02 to 0.77 μg g-1 dw (median: 0.11 μg g-1 dw) in liver tissue. For eel, these concentrations were between 0.07 and 1.3 μg g-1 dw (median: 0.39 μg g-1 dw) and between 0.08 and 1.4 μg g-1 dw (median: 0.55 μg g-1 dw) respectively. We found a correlation of accumulated mercury with length in perch, independent of location. Furthermore, a significant difference in accumulated mercury concentrations between the targeted species was measured, with the highest mean concentrations per dry weight in eel liver and muscle tissue. In perch, higher concentrations were found in muscle compared to liver tissue, while in eel, liver tissue showed the highest concentrations. These findings were further considered with concentrations corrected for lipid content, excluding the fat compartment, which is known to a hold negligible portion of the total and methyl mercury concentrations. This confirmed our previous conclusions, except for mercury concentrations in eel. Here there was no longer a significant difference between muscle and liver concentrations. Finally, health risk analyses revealed that only frequent consumption of local eel (> 71 g day-1) could pose risks to humans.
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Affiliation(s)
- Lies Teunen
- Department of Biology, Systemic Physiological and Ecotoxicological Research Group, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium.
| | - Claude Belpaire
- Research Institute for Nature and Forest (INBO), Dwersbos 28, 1630, Linkebeek, Belgium
| | - Gudrun De Boeck
- Department of Biology, Systemic Physiological and Ecotoxicological Research Group, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Ronny Blust
- Department of Biology, Systemic Physiological and Ecotoxicological Research Group, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Lieven Bervoets
- Department of Biology, Systemic Physiological and Ecotoxicological Research Group, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
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9
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Diet-driven mercury contamination is associated with polar bear gut microbiota. Sci Rep 2021; 11:23372. [PMID: 34862385 PMCID: PMC8642428 DOI: 10.1038/s41598-021-02657-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 11/18/2021] [Indexed: 11/09/2022] Open
Abstract
The gut microbiota may modulate the disposition and toxicity of environmental contaminants within a host but, conversely, contaminants may also impact gut bacteria. Such contaminant-gut microbial connections, which could lead to alteration of host health, remain poorly known and are rarely studied in free-ranging wildlife. The polar bear (Ursus maritimus) is a long-lived, wide-ranging apex predator that feeds on a variety of high trophic position seal and cetacean species and, as such, is exposed to among the highest levels of biomagnifying contaminants of all Arctic species. Here, we investigate associations between mercury (THg; a key Arctic contaminant), diet, and the diversity and composition of the gut microbiota of polar bears inhabiting the southern Beaufort Sea, while accounting for host sex, age class and body condition. Bacterial diversity was negatively associated with seal consumption and mercury, a pattern seen for both Shannon and Inverse Simpson alpha diversity indices (adjusted R2 = 0.35, F1,18 = 8.00, P = 0.013 and adjusted R2 = 0.26, F1,18 = 6.04, P = 0.027, respectively). No association was found with sex, age class or body condition of polar bears. Bacteria known to either be involved in THg methylation or considered to be highly contaminant resistant, including Lactobacillales, Bacillales and Aeromonadales, were significantly more abundant in individuals that had higher THg concentrations. Conversely, individuals with higher THg concentrations showed a significantly lower abundance of Bacteroidales, a bacterial order that typically plays an important role in supporting host immune function by stimulating intraepithelial lymphocytes within the epithelial barrier. These associations between diet-acquired mercury and microbiota illustrate a potentially overlooked outcome of mercury accumulation in polar bears.
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10
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Jinadasa BKKK, Jayasinghe GDTM, Pohl P, Fowler SW. Mitigating the impact of mercury contaminants in fish and other seafood-A review. MARINE POLLUTION BULLETIN 2021; 171:112710. [PMID: 34252733 DOI: 10.1016/j.marpolbul.2021.112710] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 06/23/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
Mercury (Hg) is a well-known toxicant which enters the marine environment by both natural and anthropogenic sources. Consumption of fish and other seafood that contain methylmercury (MeHg) is a leading source of Hg exposure in humans. Considerable efforts have been made to mitigate the Hg presence and reduce its risks to humans. In this review the acknowledged methods of mitigation are summarized such as regulation and maximum allowable limits, and culinary treatments. In addition, selected industrial level trials are reviewed, and studies on Hg intoxication and the protective effects of the essential trace element, selenium (Se), are discussed. In view of the available literature, Hg reduction in fish and other seafood on a large industrial scale still is largely unsuccessful. Hence, more research and further attempts are necessary in order to better mitigate the Hg problem in fish and other seafood products.
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Affiliation(s)
- B K K K Jinadasa
- Analytical Chemistry Laboratory (ACL), National Aquatic Resources Research & Development Agency (NARA), Colombo-15, Sri Lanka; Department of Food Science & Technology, Faculty of Livestock, Fisheries & Nutrition, Wayamba University of Sri Lanka, Makandura, Gonawila (NWP), Sri Lanka.
| | - G D T M Jayasinghe
- Analytical Chemistry Laboratory (ACL), National Aquatic Resources Research & Development Agency (NARA), Colombo-15, Sri Lanka
| | - Pawel Pohl
- Department of Analytical Chemistry and Chemical Metallurgy, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze St. Wyspianskiego 27, 50-370 Wrocław, Poland
| | - Scott W Fowler
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11794-5000, USA
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Jędruch A, Falkowska L, Saniewska D, Durkalec M, Nawrocka A, Kalisińska E, Kowalski A, Pacyna JM. Status and trends of mercury pollution of the atmosphere and terrestrial ecosystems in Poland. AMBIO 2021; 50:1698-1717. [PMID: 33755895 PMCID: PMC8285459 DOI: 10.1007/s13280-021-01505-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/28/2020] [Accepted: 01/15/2021] [Indexed: 06/12/2023]
Abstract
The goal of this paper is to assess the current status and trends of total mercury (THg) contamination of the atmosphere and terrestrial ecosystems in Poland. The study shows that the reduced domestic and worldwide atmospheric emission of Hg resulted in decreased THg level in the terrestrial biotope and biosphere. Considering that Poland is one of the main Hg emitters in Europe, the THg concentrations in its abiotic environment are still elevated. However, the THg level in terrestrial organisms is relatively low, which is because a large proportion of Hg deposited on land is accumulated in organic-rich soils. Regarding the THg concentration, consumption of wildlife and livestock from Poland is safe for humans. Nevertheless, the authors indicate the need for effective environmental monitoring, based on selected bioindicators, which is crucial considering the slowing reduction of Hg emission combined with the consequences of the changing climate.
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Affiliation(s)
- Agnieszka Jędruch
- Faculty of Oceanography and Geography, Institute of Oceanography, Department of Marine Chemistry and Environmental Protection, University of Gdańsk, Al. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland
| | - Lucyna Falkowska
- Faculty of Oceanography and Geography, Institute of Oceanography, Department of Marine Chemistry and Environmental Protection, University of Gdańsk, Al. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland
| | - Dominika Saniewska
- Faculty of Oceanography and Geography, Institute of Oceanography, Department of Marine Chemistry and Environmental Protection, University of Gdańsk, Al. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland
| | - Maciej Durkalec
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Al. Partyzantów 57, 24-100 Puławy, Poland
| | - Agnieszka Nawrocka
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Al. Partyzantów 57, 24-100 Puławy, Poland
| | - Elżbieta Kalisińska
- Faculty of Pharmacy, Medical Biotechnology and Laboratory Medicine, Department of Biology and Medical Parasitology, Pomeranian Medical University, Al. Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland
| | - Artur Kowalski
- Faculty of Chemistry, Department of Analytical and Environmental Chemistry, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Józef M. Pacyna
- Faculty of Energy and Fuels, AGH University of Science and Technology, ul. Mickiewicza 30, 30-059 Kraków, Poland
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McAlvay AC, Armstrong CG, Baker J, Elk LB, Bosco S, Hanazaki N, Joseph L, Martínez-Cruz TE, Nesbitt M, Palmer MA, Priprá de Almeida WC, Anderson J, Asfaw Z, Borokini IT, Cano-Contreras EJ, Hoyte S, Hudson M, Ladio AH, Odonne G, Peter S, Rashford J, Wall J, Wolverton S, Vandebroek I. Ethnobiology Phase VI: Decolonizing Institutions, Projects, and Scholarship. J ETHNOBIOL 2021. [DOI: 10.2993/0278-0771-41.2.170] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Alex C. McAlvay
- Institute of Economic Botany, The New York Botanical Garden, 2900 Southern Blvd, Bronx, NY 10458
| | | | - Janelle Baker
- Anthropology, Athabasca University, Athabasca, Alberta, Canada
| | | | - Samantha Bosco
- 5 Horticulture Section, School of Integrated Plant Sciences, Cornell University, Ithaca, New York
| | - Natalia Hanazaki
- Departamento de Ecologia e Zoologia, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Leigh Joseph
- 7 School of Environmental Studies, University of Victoria, BC, Canada
| | | | - Mark Nesbitt
- Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Meredith Alberta Palmer
- Science and Technology Studies Department, American Indian and Indigenous Studies Program, Cornell University, Ithaca, New York
| | | | - Jane Anderson
- Equity for Indigenous Research and Innovation Coordinating Hub, Anthropology and Museum Studies, New York University, New York, New York
| | - Zemede Asfaw
- Department of Plant Biology and Biodiversity Management, Addis Ababa University, Addis Ababa, Ethiopia
| | - Israel T. Borokini
- Ecology, Evolution and Conservation Biology Graduate Program, Department of Biology, University of Nevada, Reno, Nevada
| | - Eréndira Juanita Cano-Contreras
- Centro de Investigaciones Multidisciplinarias sobre Chiapas y la Frontera Sur, Universidad Nacional Autónoma de México, Chiapas, México
| | - Simon Hoyte
- Department of Anthropology, University College London, London, United Kingdom
| | - Maui Hudson
- Te Kotahi Research Institute, University of Waikato, Hamilton, New Zealand
| | - Ana H. Ladio
- INIBIOMA (CONICET-Universidad Nacional del Comahue), San Carlos de Bariloche, Río Negro, Argentina
| | | | - Sonia Peter
- 20 Biocultural Education and Research Programme, St. James, Barbados
| | - John Rashford
- Department of Sociology and Anthropology, College of Charleston, Charleston, South Carolina
| | - Jeffrey Wall
- Department of Geography, Environment and Geomatics, University of Guelph, Ontario, Canada
| | - Steve Wolverton
- Department of Geography and the Environment, University of North Texas, Denton, Texas
| | - Ina Vandebroek
- Institute of Economic Botany, The New York Botanical Garden, 2900 Southern Blvd, Bronx, NY 10458
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13
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Yabanli M, Tay S. Selenium and mercury balance in sea bream obtained from different living environments in Turkey: a risk assessment for the consumer health. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:36069-36075. [PMID: 33683585 DOI: 10.1007/s11356-021-13366-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/04/2021] [Indexed: 06/12/2023]
Abstract
The selenium health benefit value (Se-HBV) is the criterion developed for revealing nutritional values or the risks related to mercury (Hg) toxicity which can emerge in relation to consumption of fish. In this study, the conditions of Se and Hg elements in the muscular tissues of sea bream (Sparus aurata) living in different environments in Mugla province were examined. In addition, a benefit/risk assessment was performed in terms of consumer health with the calculation of Se-HBV. In this context, muscular tissues of sea bream obtained from wild species (WS), offshore marine cages species (OS), and soil ponds species (SS) were dissolved with microwave wet digestion and the concentrations of Se and Hg (mg/kg wet weight) were determined by using inductively coupled plasma mass spectroscopy (ICP-MS). According to the obtained results, the highest mean Se level was determined in SS (0.43 ± 0.02 mg/kg) followed by WS (0.35 ± 0.03 mg/kg) and OS (0.34 ± 0.02 mg/kg). The highest mean Hg concentration was detected in WS (0.09 ± 0.02 mg/kg) followed by OS and SS as 0.05 ± 0.01 mg/kg respectively. As a result of risk assessment conducted with Se-HBV, positive values were determined for each one of three sea bream groups.
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Affiliation(s)
- Murat Yabanli
- Department of Aquatic Sciences, Faculty of Fisheries, Mugla Sitki Kocman University, Mugla, Turkey.
| | - Sami Tay
- Izmir Food Control Laboratory Directorate, Izmir, Turkey
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14
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Ekumah JN, Ma Y, Akpabli-Tsigbe NDK, Kwaw E, Ma S, Hu J. Global soil distribution, dietary access routes, bioconversion mechanisms and the human health significance of selenium: A review. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.100960] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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15
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Golzadeh N, Barst BD, Baker JM, Auger JC, McKinney MA. Alkylated polycyclic aromatic hydrocarbons are the largest contributor to polycyclic aromatic compound concentrations in traditional foods of the Bigstone Cree Nation in Alberta, Canada. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 275:116625. [PMID: 33582641 DOI: 10.1016/j.envpol.2021.116625] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 01/25/2021] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
Rising global demand for energy promotes extensive mining of natural resources, such as oil sands extractions in Alberta, Canada. These extractive activities release hazardous chemicals into the environment, such as polycyclic aromatic compounds (PACs), which include the parent polycyclic aromatic hydrocarbons (PAHs), alkylated PAHs, and sulfur-containing heterocyclic dibenzothiophenes (DBTs). In areas adjacent to industrial installations, Indigenous communities may be exposed to these PACs through the consumption of traditional foods. Our objective was to evaluate and compare the concentrations of total PACs (∑PAC), expressed as the sum of the 16 U.S. EPA priority PAHs (∑PAH), 49 alkylated PAHs (∑alkyl-PAH), and 7 DBTs (∑DBT) in plant and animal foods collected in 2015 by the Bigstone Cree Nation in Alberta, Canada. We analyzed 42 plant tissues, 40 animal muscles, 5 ribs, and 4 pooled liver samples. Concentrations of ∑PAC were higher in the lichen, old man's beard (Usnea spp.) (808 ± 116 ng g-1 w.w.), than in vascular plants, and were also higher in smoked moose (Alces alces) rib (461 ± 120 ng g-1 w.w.) than in all other non-smoked animal samples. Alkylated-PAHs accounted for between 63% and 95% of ∑PAC, while the concentrations of ∑PAH represented 4%-36% of ∑PAC. Contributions of ∑DBT to ∑PAC were generally lowest, ranging from <1% to 14%. While the concentrations of benzo(a)pyrene (B[a]P) and ∑PAH4 (∑benzo[a]anthracene, chrysene, benzo[b]fluoranthene, and B[a]P) in all samples were below guideline levels for human consumption as determined by the European Commission, guideline levels for the more prevalent alkylated PAHs are not available. Given the predominance of alkylated PAHs in all food samples and the potentially elevated toxicity relative to parent PAHs of this class of PACs, it is critical to consider a broader range of PACs other than just parent PAHs in research conducted close to oil sands mining activities.
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Affiliation(s)
- Nasrin Golzadeh
- Department of Natural Resource Sciences, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada.
| | - Benjamin D Barst
- Water and Environmental Research Center (WERC), University of Alaska Fairbanks, Fairbanks, AK, United States
| | - Janelle M Baker
- Department of Anthropology, Centre for Social Sciences, Athabasca University, Athabasca, Alberta, Canada
| | - Josie C Auger
- Nukskahtowin and Faculty of Humanities and Social Sciences, Centre for World Indigenous Knowledge and Research, Athabasca University, Athabasca, Alberta, Canada
| | - Melissa A McKinney
- Department of Natural Resource Sciences, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
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16
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Cellular and Molecular Mechanisms of Environmental Pollutants on Hematopoiesis. Int J Mol Sci 2020; 21:ijms21196996. [PMID: 32977499 PMCID: PMC7583016 DOI: 10.3390/ijms21196996] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 02/07/2023] Open
Abstract
Hematopoiesis is a complex and intricate process that aims to replenish blood components in a constant fashion. It is orchestrated mostly by hematopoietic progenitor cells (hematopoietic stem cells (HSCs)) that are capable of self-renewal and differentiation. These cells can originate other cell subtypes that are responsible for maintaining vital functions, mediate innate and adaptive immune responses, provide tissues with oxygen, and control coagulation. Hematopoiesis in adults takes place in the bone marrow, which is endowed with an extensive vasculature conferring an intense flow of cells. A myriad of cell subtypes can be found in the bone marrow at different levels of activation, being also under constant action of an extensive amount of diverse chemical mediators and enzymatic systems. Bone marrow platelets, mature erythrocytes and leukocytes are delivered into the bloodstream readily available to meet body demands. Leukocytes circulate and reach different tissues, returning or not returning to the bloodstream. Senescent leukocytes, specially granulocytes, return to the bone marrow to be phagocytized by macrophages, restarting granulopoiesis. The constant high production and delivery of cells into the bloodstream, alongside the fact that blood cells can also circulate between tissues, makes the hematopoietic system a prime target for toxic agents to act upon, making the understanding of the bone marrow microenvironment vital for both toxicological sciences and risk assessment. Environmental and occupational pollutants, therapeutic molecules, drugs of abuse, and even nutritional status can directly affect progenitor cells at their differentiation and maturation stages, altering behavior and function of blood compounds and resulting in impaired immune responses, anemias, leukemias, and blood coagulation disturbances. This review aims to describe the most recently investigated molecular and cellular toxicity mechanisms of current major environmental pollutants on hematopoiesis in the bone marrow.
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