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Evers DC, Ackerman JT, Åkerblom S, Bally D, Basu N, Bishop K, Bodin N, Braaten HFV, Burton MEH, Bustamante P, Chen C, Chételat J, Christian L, Dietz R, Drevnick P, Eagles-Smith C, Fernandez LE, Hammerschlag N, Harmelin-Vivien M, Harte A, Krümmel EM, Brito JL, Medina G, Barrios Rodriguez CA, Stenhouse I, Sunderland E, Takeuchi A, Tear T, Vega C, Wilson S, Wu P. Global mercury concentrations in biota: their use as a basis for a global biomonitoring framework. ECOTOXICOLOGY (LONDON, ENGLAND) 2024; 33:325-396. [PMID: 38683471 PMCID: PMC11213816 DOI: 10.1007/s10646-024-02747-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/06/2024] [Indexed: 05/01/2024]
Abstract
An important provision of the Minamata Convention on Mercury is to monitor and evaluate the effectiveness of the adopted measures and its implementation. Here, we describe for the first time currently available biotic mercury (Hg) data on a global scale to improve the understanding of global efforts to reduce the impact of Hg pollution on people and the environment. Data from the peer-reviewed literature were compiled in the Global Biotic Mercury Synthesis (GBMS) database (>550,000 data points). These data provide a foundation for establishing a biomonitoring framework needed to track Hg concentrations in biota globally. We describe Hg exposure in the taxa identified by the Minamata Convention: fish, sea turtles, birds, and marine mammals. Based on the GBMS database, Hg concentrations are presented at relevant geographic scales for continents and oceanic basins. We identify some effective regional templates for monitoring methylmercury (MeHg) availability in the environment, but overall illustrate that there is a general lack of regional biomonitoring initiatives around the world, especially in Africa, Australia, Indo-Pacific, Middle East, and South Atlantic and Pacific Oceans. Temporal trend data for Hg in biota are generally limited. Ecologically sensitive sites (where biota have above average MeHg tissue concentrations) have been identified throughout the world. Efforts to model and quantify ecosystem sensitivity locally, regionally, and globally could help establish effective and efficient biomonitoring programs. We present a framework for a global Hg biomonitoring network that includes a three-step continental and oceanic approach to integrate existing biomonitoring efforts and prioritize filling regional data gaps linked with key Hg sources. We describe a standardized approach that builds on an evidence-based evaluation to assess the Minamata Convention's progress to reduce the impact of global Hg pollution on people and the environment.
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Affiliation(s)
- David C Evers
- Biodiversity Research Institute, 276 Canco Road, Portland, ME, 04103, USA.
| | - Joshua T Ackerman
- U.S. Geological Survey, Western Ecological Research Center, Dixon Field Station, 800 Business Park Drive, Suite D, Dixon, CA, 95620, USA
| | | | - Dominique Bally
- African Center for Environmental Health, BP 826 Cidex 03, Abidjan, Côte d'Ivoire
| | - Nil Basu
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, QC, Canada
| | - Kevin Bishop
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Upsalla, Sweden
| | - Nathalie Bodin
- Research Institute for Sustainable Development Seychelles Fishing Authority, Victoria, Seychelles
| | | | - Mark E H Burton
- Biodiversity Research Institute, 276 Canco Road, Portland, ME, 04103, USA
| | - Paco Bustamante
- Littoral, Environnement et Sociétés (LIENSs), UMR 7266 CNRS La Rochelle Université, 2 Rue Olympe de Gouges, 17000, La Rochelle, France
| | - Celia Chen
- Department of Biological Sciences, Dartmouth College, Hanover, NH, 03755, USA
| | - John Chételat
- Environment and Cliamte Change Canada, National Wildlife Research Centre, Ottawa, ON, K1S 5B6, Canada
| | - Linroy Christian
- Department of Analytical Services, Dunbars, Friars Hill, St John, Antigua and Barbuda
| | - Rune Dietz
- Department of Ecoscience, Aarhus University, Arctic Research Centre (ARC), Department of Ecoscience, P.O. Box 358, DK-4000, Roskilde, Denmark
| | - Paul Drevnick
- Teck American Incorporated, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada
| | - Collin Eagles-Smith
- U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR, 97331, USA
| | - Luis E Fernandez
- Sabin Center for Environment and Sustainability and Department of Biology, Wake Forest University, Winston-Salem, NC, 29106, USA
- Centro de Innovación Científica Amazonica (CINCIA), Puerto Maldonado, Madre de Dios, Peru
| | - Neil Hammerschlag
- Shark Research Foundation Inc, 29 Wideview Lane, Boutiliers Point, NS, B3Z 0M9, Canada
| | - Mireille Harmelin-Vivien
- Aix-Marseille Université, Université de Toulon, CNRS/INSU/IRD, Institut Méditerranéen d'Océanologie (MIO), UM 110, Campus de Luminy, case 901, 13288, Marseille, cedex 09, France
| | - Agustin Harte
- Basel, Rotterdam and Stockholm Conventions Secretariat, United Nations Environment Programme (UNEP), Chem. des Anémones 15, 1219, Vernier, Geneva, Switzerland
| | - Eva M Krümmel
- Inuit Circumpolar Council-Canada, Ottawa, Canada and ScienTissiME Inc, Barry's Bay, ON, Canada
| | - José Lailson Brito
- Universidade do Estado do Rio de Janeiro, Rua Sao Francisco Xavier, 524, Sala 4002, CEP 20550-013, Maracana, Rio de Janeiro, RJ, Brazil
| | - Gabriela Medina
- Director of Basel Convention Coordinating Centre, Stockholm Convention Regional Centre for Latin America and the Caribbean, Hosted by the Ministry of Environment, Montevideo, Uruguay
| | | | - Iain Stenhouse
- Biodiversity Research Institute, 276 Canco Road, Portland, ME, 04103, USA
| | - Elsie Sunderland
- Harvard University, Pierce Hall 127, 29 Oxford Street, Cambridge, MA, 02138, USA
| | - Akinori Takeuchi
- National Institute for Environmental Studies, Health and Environmental Risk Division, 16-2 Onogawa Tsukuba, Ibaraki, 305-8506, Japan
| | - Tim Tear
- Biodiversity Research Institute, 276 Canco Road, Portland, ME, 04103, USA
| | - Claudia Vega
- Centro de Innovaccion Cientifica Amazonica (CINCIA), Jiron Ucayali 750, Puerto Maldonado, Madre de Dios, 17001, Peru
| | - Simon Wilson
- Arctic Monitoring and Assessment Programme (AMAP) Secretariat, N-9296, Tromsø, Norway
| | - Pianpian Wu
- Department of Biological Sciences, Dartmouth College, Hanover, NH, 03755, USA
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Nyarko E, Boateng CM, Asamoah O, Edusei MO, Mahu E. Potential human health risks associated with ingestion of heavy metals through fish consumption in the Gulf of Guinea. Toxicol Rep 2023; 10:117-123. [PMID: 36698915 PMCID: PMC9869475 DOI: 10.1016/j.toxrep.2023.01.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 01/12/2023] [Accepted: 01/14/2023] [Indexed: 01/18/2023] Open
Abstract
Heavy metal pollution of the marine environment has toxic implications for both the aquatic biota and human health. We examined the levels of Zinc (Zn), Lead (Pb), Copper (Cu), Cadmium (Cd), Arsenic (As) and Mercury (Hg) in muscles of Sardinella maderensis, Dentex angolensis, Sphyraena sphyraena and Penaeus notialis caught from the coastal waters of Ghana using inductively coupled plasma mass spectrometry method. Penaeus notialis recorded the highest concentrations of all the metals (Cu:12.08 ± 1.46 µg/g, Zn: 19.20 ± 2.27 µg/g, As: 8.46 ± 2.42 µg/g, and Cd: 0.03 ± 0.01 µg/g) except Hg. Mercury was relatively high in D. angolensis (0.14 ± 0.03 µg/g). Apart from As, all metals were within globally permissible daily limits for consumption by human per meal. The estimated Target Hazard Quotient due to the intake of Hg through D. angolensis consumption exceeded the threshold value across all age categories. Carcinogenic risks due to As intake through P. notialis consumption far exceeded the 10-6 threshold for all age groups in Ghana. It is recommended that the consumption of these fish species particularly, the shrimp P. notialis be done cautiously to avoid possible future health challenges.
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Affiliation(s)
| | - Charles Mario Boateng
- Department of Marine and Fisheries Sciences, University of Ghana, Legon, Ghana,Corresponding author.
| | - Obed Asamoah
- Department of Marine and Fisheries Sciences, University of Ghana, Legon, Ghana
| | - Maurice Oti Edusei
- Department of Marine and Fisheries Sciences, University of Ghana, Legon, Ghana
| | - Edem Mahu
- Department of Marine and Fisheries Sciences, University of Ghana, Legon, Ghana
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Moslemi-Aqdam M, Low G, Low M, Laird BD, Branfireun BA, Swanson HK. Estimates, spatial variability, and environmental drivers of mercury biomagnification rates through lake food webs in the Canadian subarctic. ENVIRONMENTAL RESEARCH 2023; 217:114835. [PMID: 36400218 DOI: 10.1016/j.envres.2022.114835] [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: 08/12/2022] [Revised: 10/27/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Biomagnification of mercury (Hg) through lake food webs is understudied in rapidly changing northern regions, where wild-caught subsistence fish are critical to food security. We investigated estimates and among-lake variability of Hg biomagnification rates (BMR), relationships between Hg BMR and Hg levels in subsistence fish, and environmental drivers of Hg BMR in ten remote subarctic lakes in Northwest Territories, Canada. Lake-specific linear regressions between Hg concentrations (total Hg ([THg]) in fish and methyl Hg ([MeHg]) in primary consumers) and baseline-adjusted δ15N ratios were significant (p < 0.001, r2 = 0.58-0.88), indicating biomagnification of Hg through food webs of all studied lakes. Quantified using the slope of Hg-δ15N regressions, Hg BMR ranged from 0.16 to 0.25, with mean ± standard deviation of 0.20 ± 0.03). Using fish [MeHg] rather than [THg] lowered estimates of Hg BMR by ∼10%, suggesting that the use of [THg] as a proxy for [MeHg] in fish can influence estimates of Hg BMR. Among-lake variability of size-standardized [THg] in resident fish species from different trophic guilds, namely Lake Whitefish (Coregonus clupeaformis) and Northern Pike (Esox lucius), was not significantly explained by among-lake variability in Hg BMR. Stepwise multiple regressions indicated that among-lake variability of Hg BMR was best explained by a positive relationship with catchment forest cover (p = 0.009, r2 = 0.59), likely reflecting effects of forest cover on water chemistry of downstream lakes and ultimately, concentrations of biomagnifying MeHg (and percent MeHg of total Hg) in resident biota. These findings improve our understanding of Hg biomagnification in remote subarctic lakes.
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Affiliation(s)
| | - George Low
- Dehcho Aboriginal Aquatic Resources & Oceans Management, Hay River, NT, Canada
| | - Mike Low
- Dehcho Aboriginal Aquatic Resources & Oceans Management, Hay River, NT, Canada
| | - Brian D Laird
- School of Public Health Sciences, University of Waterloo, Waterloo, ON, Canada
| | | | - Heidi K Swanson
- Department of Biology, University of Waterloo, Waterloo, ON, Canada
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Silva MHL, Castro ACLD, Silva ISD, Cabral PFP, Azevedo JWDJ, Soares LS, Bandeira AM, Basso MJ, Nunes JLS. Determination of metals in estuarine fishes in a metropolitan region of the coastal zone of the Brazilian Amazon. MARINE POLLUTION BULLETIN 2023; 186:114477. [PMID: 36565580 DOI: 10.1016/j.marpolbul.2022.114477] [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: 10/05/2022] [Revised: 12/02/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
The aim of the present study was to determine concentrations of cadmium, copper, chromium, manganese and iron in fishes in the São Marcos (SMB), São Jose (SJB) and Arraial (AB) Bays. Metal concentrations were determined using inductively coupled plasma optical emission spectrometry. Mean Cd and Cr levels were above the permissible limits set by different international or national guidelines in all three bays, whereas copper levels were well below the maximum acceptable limit. High concentrations of iron were found in all species analyzed, whereas high concentrations of manganese were found, especially in specimens caught in SJB. Spatial analysis indicated significant differences among the elements investigated. Copper was correlated more with SMB and AB as well as the species Macrodon ancylodon (carnivore) and Sciades herzbergii (omnivore). Cadmium and iron were strongly associated with AB and SJB, while manganese was only associated with SJB, mainly in carnivorous and herbivorous species.
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Affiliation(s)
- Marcelo Henrique Lopes Silva
- Postgraduate Program in Biodiversity and Biotechnology, BIONORTE Network, Federal University of Maranhão (UFMA), Avenue of Portugueses 1966, Bacanga, São Luís, MA, Brazil; Postgraduate Program in Development and Environment, Department of Oceanography and Limnology, Federal University of Maranhão (UFMA), Avenue of Portugueses 1966, Bacanga, São Luís, MA, Brazil.
| | - Antonio Carlos Leal de Castro
- Postgraduate Program in Development and Environment, Department of Oceanography and Limnology, Federal University of Maranhão (UFMA), Avenue of Portugueses 1966, Bacanga, São Luís, MA, Brazil.
| | - Iranaldo Santos da Silva
- Department of Chemistry, Federal University of Maranhão (UFMA), Avenue of Portugueses 1966, Bacanga, São Luís, MA, Brazil.
| | | | - James Werllen de Jesus Azevedo
- Postgraduate Program in Biodiversity and Biotechnology, BIONORTE Network, Federal University of Maranhão (UFMA), Avenue of Portugueses 1966, Bacanga, São Luís, MA, Brazil; Postgraduate Program in Development and Environment, Department of Oceanography and Limnology, Federal University of Maranhão (UFMA), Avenue of Portugueses 1966, Bacanga, São Luís, MA, Brazil; Coordination of the Fishing Engineering Course, Federal University of Maranhão (UFMA) Road of Pinheiro-Pacas, Pinheiro, Maranhão, Brazil.
| | - Leonardo Silva Soares
- Postgraduate Program in Development and Environment, Department of Oceanography and Limnology, Federal University of Maranhão (UFMA), Avenue of Portugueses 1966, Bacanga, São Luís, MA, Brazil.
| | - Arkley Marques Bandeira
- Postgraduate Program in Development and Environment, Department of Oceanography and Limnology, Federal University of Maranhão (UFMA), Avenue of Portugueses 1966, Bacanga, São Luís, MA, Brazil.
| | - Marianna Jorge Basso
- Postgraduate Program in Biodiversity and Biotechnology, BIONORTE Network, Federal University of Maranhão (UFMA), Avenue of Portugueses 1966, Bacanga, São Luís, MA, Brazil.
| | - Jorge Luíz Silva Nunes
- Postgraduate Program in Biodiversity and Biotechnology, BIONORTE Network, Federal University of Maranhão (UFMA), Avenue of Portugueses 1966, Bacanga, São Luís, MA, Brazil; Postgraduate Program in Development and Environment, Department of Oceanography and Limnology, Federal University of Maranhão (UFMA), Avenue of Portugueses 1966, Bacanga, São Luís, MA, Brazil.
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Kalla P, Cyterski M, Scheidt D, Minucci J. Spatiotemporal effects of interacting water quality constituents on mercury in a common prey fish in a large, perturbed, subtropical wetland. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 792:148321. [PMID: 34153761 PMCID: PMC8791233 DOI: 10.1016/j.scitotenv.2021.148321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 06/13/2023]
Abstract
We present results of a multiyear study of the Everglades (Florida, USA) detailing how differences in environmental variables can alter mercury concentrations in the food web. About 1000 random locations throughout the freshwater Everglades marsh have been sampled for the United States Environmental Protection Agency's Everglades Regional Environmental Monitoring and Assessment Program ("REMAP") since 1995. REMAP sampling is synoptic and multimedia, including an abundant prey fish (eastern mosquitofish, Gambusia holbrooki) as an indicator of mercury bioaccumulation. Amplifying an approach we reported to Everglades National Park, we used Generalized Boosted Models on the REMAP data to estimate how much of the mercury concentration in mosquitofish could be explained by water quality constituents or indicators of ecological health (covariates). The resulting model accounts for 60% of the environmental influence on variation in mosquitofish mercury, a robust outcome for a large, disturbed ecosystem such as the Everglades, given its seasonal, annual, and spatial differences. Of the eight most influential covariates, two were methyl mercury in periphyton and water, two can be indicators of trophic state (alkaline phosphatase and chlorophyll-a), one can be a marker of stormwater transport (conductivity), and two can be enablers of mercury methylation (sulfate in soil and water). While these covariates had an average individual influence ranging from 4.0% to 10.1%, together they accounted for 52.2% of the total relative influence. Water with low phosphorus, but with sulfur and carbon above background, moved into the less disturbed parts of the Everglades via modifications to the existing water management system, could increase mercury bioaccumulation in those parts of the marsh.
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Affiliation(s)
- Peter Kalla
- United States Environmental Protection Agency, Region 4, Laboratory Services and Applied Science Division, 980 College Station Road, Athens, GA 30605, USA.
| | - Michael Cyterski
- United States Environmental Protection Agency, Office of Research and Development, Center for Environmental Measurement and Modeling, Environmental Processes Division, 960 College Station Road, Athens, GA 30605, USA
| | - Daniel Scheidt
- United States Environmental Protection Agency, Region 4, Water Division, 980 College Station Road, Athens, GA 30605, USA
| | - Jeffrey Minucci
- United States Environmental Protection Agency, Office of Research and Development, Center for Public Health and Environmental Assessment, Public Health and Environmental Systems Division, Research Triangle Park, 109 TW Alexander Drive, Durham, NC 27709, USA
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Feng W, Wang Z, Xu H, Chen L, Zheng F. Trace metal concentrations in commercial fish, crabs, and bivalves from three lagoons in the South China Sea and implications for human health. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:16393-16403. [PMID: 32124276 DOI: 10.1007/s11356-019-06712-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 10/02/2019] [Indexed: 06/10/2023]
Abstract
Seafood is increasingly used worldwide due to its nutritional value. It is rich in essential minerals, liposoluble vitamins, and high-quality proteins. However, many seafood species tend to accumulate metals, making them a threat to human health. We chose Xincun Lagoon and Li-an Lagoon, which have been seriously polluted by local activities, and the relatively clean Tufu Bay as the research areas to investigate whether trace metals in economic seafood species in these areas threaten the food safety of consumers. The results show that the mean concentrations (mg kg-1 ww) of trace metals were Cu 0.22 ± 0.18, Pb 0.040 ± 0.028, Zn 5.25 ± 1.60, Cd 0.009 ± 0.004, Hg 0.0072 ± 0.0031, As 0.21 ± 0.12, and Cr 0.084 ± 0.048 in fish samples (Trachinotus ovatus); Cu 4.00 ± 0.96, Pb 0.075 ± 0.030, Zn 19.10 ± 2.64, Cd 0.050 ± 0.024, Hg 0.0131 ± 0.0035, As 0.91 ± 0.27, and Cr 0.216 ± 0.095 in crab samples (Charybdis natator); and Cu 5.37 ± 1.39, Pb 0.095 ± 0.023, Zn 21.38 ± 3.59, Cd 0.096 ± 0.026, Hg 0.0208 ± 0.0052, As 1.65 ± 0.59, and Cr 0.406 ± 0.117 in bivalve samples (Ruditapes philippinarum), respectively, with species specific (fish < crab < bivalve) and significant seasonal and spatial variation (p < 0.05). However, health risk assessment (EDI, THQ, TTHQ, CR) indicated that the consumption of the analyzed seafood from the study areas is safe for local consumers. But there is a potential risk for fishermen and those who prefer seafood.
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Affiliation(s)
- Weihua Feng
- Key Laboratory of Engineering Oceanography, Second Institute of Oceanography, Ministry of Natural Resource of the People's Republic of China, Hangzhou, 310012, China.
| | - Zhifu Wang
- Key Laboratory of Engineering Oceanography, Second Institute of Oceanography, Ministry of Natural Resource of the People's Republic of China, Hangzhou, 310012, China
| | - Hengtao Xu
- Key Laboratory of Engineering Oceanography, Second Institute of Oceanography, Ministry of Natural Resource of the People's Republic of China, Hangzhou, 310012, China
| | - Lihong Chen
- Key Laboratory of Engineering Oceanography, Second Institute of Oceanography, Ministry of Natural Resource of the People's Republic of China, Hangzhou, 310012, China
| | - Fangqin Zheng
- Key Laboratory of Engineering Oceanography, Second Institute of Oceanography, Ministry of Natural Resource of the People's Republic of China, Hangzhou, 310012, China
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Cao L, Liu J, Dou S, Huang W. Biomagnification of methylmercury in a marine food web in Laizhou Bay (North China) and associated potential risks to public health. MARINE POLLUTION BULLETIN 2020; 150:110762. [PMID: 31784261 DOI: 10.1016/j.marpolbul.2019.110762] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 11/18/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
The concentrations of total mercury (THg) and methylmercury (MeHg) were assessed in water, sediment and biota (54 species) samples from the coast of Laizhou Bay, to evaluate MeHg biomagnification in Laizhou Bay food web. The trophic web structure was determined with stable isotope ratios. The MeHg concentrations were highly variable among species ranged from 4.8 ng g-1 in primary producers to 411.2 ng g-1 in spotted sea bass. Weight and ecotype were the principal parameters related to the mercury concentrations for most species. The trophic magnification factors (TMFs) for MeHg and THg were 2.09 and 1.69, respectively, indicating that mercury biomagnification is occurring in this marine food web. The estimated weekly intake (EWI) and target hazard quotient (THQ) values demonstrated that consuming predatory fishes from the bay could cause potential health risks to humans.
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Affiliation(s)
- Liang Cao
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Jinhu Liu
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Shuozeng Dou
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; University of Chinese Academy of Sciences, Beijing 100039, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Wei Huang
- Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China.
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Ahmed ASS, Rahman M, Sultana S, Babu SMOF, Sarker MSI. Bioaccumulation and heavy metal concentration in tissues of some commercial fishes from the Meghna River Estuary in Bangladesh and human health implications. MARINE POLLUTION BULLETIN 2019; 145:436-447. [PMID: 31590808 DOI: 10.1016/j.marpolbul.2019.06.035] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 05/29/2019] [Accepted: 06/12/2019] [Indexed: 06/10/2023]
Abstract
Despite the beneficial aspect of aquatic food's consumption, bioaccumulation of toxic metals in fish can enhance the health risk for the consumers. Heavy metals were measured from editable tissues of some commercial fish species like Latis calcarifer, Silonia silondia, Clupisoma garua, Planiliza subviridis, Otolithoides pama, Tenulosa ilisa, Rhinomugil corsula, and Aila coila in the Meghna river estuary in Noakhali district. Heavy metals such as As, Pb, Cd, Cu, and Cr were detected by ICP-MS, which were significantly different (p ≤ 0.01), and the hierarchy of all mean concentrations were: Cu (5.14 mg/kg) > Pb (3.79 mg/kg) > As (1.08 mg/kg) > Cr (0.78 mg/kg) > Cd (0.12 mg/kg). The mean concentration of Cu (6.62 mg/kg) imparted to the maximum level in L. calcarifer, which slightly exceeded the Bangladesh food safety guideline. The mean BAFs of the contaminants were found as: Pb (1042.29) > Cr (1036.47) > As (934.84) > Cd (832.77) > Cu (772). Further, L. calcarifer, S. silondia, C. garua, and P. subviridis showed the bioaccumulative status. To assess the health risk effects, estimated daily intake (EDI), target hazard quotient (THQ) and carcinogenic risk (CR) were conducted. THQs for both adult and children consumers were <1, indicating that, consumers would not experience the non-carcinogenic health effects. Although children were more susceptible than adults, CR for all the consumers was found in the acceptable range (10-6 to 10-4).
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Affiliation(s)
- A S Shafiuddin Ahmed
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Bangladesh.
| | - Moshiur Rahman
- National Agricultural technology Program Phase-II Project (NATP-02), Department of Fisheries, Bangladesh
| | | | - S M Omar Faruque Babu
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Bangladesh
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Olivera DS, Morgan MT, Tewolde SN, Botts EC, Horvath FP, Hamlin NJ. Clinical Evaluation of a Chairside Amalgam Separator to Meet Environmental Protection Agency Dental Wastewater Regulatory Compliance. Oper Dent 2019; 45:151-162. [PMID: 31172872 DOI: 10.2341/18-156-l] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate the performance of a commercially available chairside amalgam separator (CAS) in a clinical setting in which a relatively high number of amalgam restorations are placed. Performance parameters investigated included service life, amalgam collected, mercury concentrations in effluent, and solids retention efficiency. METHODS AND MATERIALS CASs were tested per International Organization of Standardization (ISO) 11143:2008 prior to installation in a military dental treatment facility and after removal from service (n=4) in order to confirm compliance with the recently enacted United States Environmental Protection Agency (EPA) Effluent Limitations Guidelines and Standards for the Dental Category. During the units' time in service, biweekly effluent grab samples were collected from the high-volume evacuation system of each chair (n=6) and analyzed for total mercury concentration by inductively coupled plasma mass spectrometry (ICP-MS). The mean total accumulated solids at the end of service life (n=6) was determined for potential design optimization. The service life expectancy in a military dental treatment facility was determined in terms of calendar and workdays. Procedural data were collected to determine the daily mean number of amalgam surfaces placed during the service life of each chairside amalgam separator (n=9). RESULTS The CAS evaluated met minimum EPA compliance requirements when used in a military dental treatment facility. The solids removal efficiency at the end of service life was 99.82% ± 0.14% (n=4). The mean service life (n=8) was 131.6 ± 45.1 calendar days (67.1±37.6 workdays). Effluent mercury concentrations ranged from 0.05 to 11.93 mg/L. Total solids accumulated in each CAS (n=6) at the end of service life was 195.4 ± 63.4 g. The mean number of amalgam surfaces placed per workday during the service life span of each CAS was 8.4 ± 1.4.
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Cao D, He B, Yin Y. Acute and Sublethal Effects of Ethylmercury Chloride on Chinese Rare Minnow (Gobiocypris rarus): Accumulation, Elimination, and Histological Changes. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2019; 102:708-713. [PMID: 30515546 DOI: 10.1007/s00128-018-2513-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 11/30/2018] [Indexed: 06/09/2023]
Abstract
Ethylmercury (EtHg) has been widely observed in the environment due to anthropogenic contamination and/or environmental ethylation of inorganic mercury. Herein, the acute and sublethal effect of EtHg chloride on Chinese rare minnow (Gobiocypris rarus) as a fish model was studied. EtHg chloride showed an obvious toxicity to 4-month-old Chinese rare minnow (LC50 24.8 µg L-1 (as Hg) at 24 h). Histological analysis revealed that acute EtHg exposure can induce necrosis, telangiectasis and exfoliation of epithelial cells in the gill, as well as edema, vacuoles, and pyknotic nuclei in hepatocytes. Sublethal dose exposure revealed a very high accumulation of EtHg in fish, which is subsequently metabolized to inorganic mercury and eliminated after depuration. A new mercury species, possibly diethylmercury, was also observed as the metabolite of EtHg in rare minnow. The present study provides useful information for assessing the risks of EtHg and understanding its bioaccumulation in aquatic organisms.
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Affiliation(s)
- Dandan Cao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Bin He
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongguang Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Laboratory of Environmental Nanotechnology and Health, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
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11
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Bilandžić N, Sedak M, Čalopek B, Đokić M, Varenina I, Kolanović BS, Luburić ĐB, Varga I, Benić M, Roncarati A. Element contents in commercial fish species from the Croatian market. J Food Compost Anal 2018. [DOI: 10.1016/j.jfca.2018.02.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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12
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Wang X, Wu L, Sun J, Wei Y, Zhou Y, Rao Z, Yuan L, Liu X. Mercury Concentrations and Se:Hg Molar Ratios in Flyingfish (Exocoetus volitans) and Squid (Uroteuthis chinensis). BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2018; 101:42-48. [PMID: 29881941 DOI: 10.1007/s00128-018-2369-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 05/25/2018] [Indexed: 06/08/2023]
Abstract
We measured total mercury (Hg) and selenium (Se) concentrations as well as stable nitrogen (N) isotopic composition in flyingfish and squid muscle tissues from the eastern Indian Ocean and western South China Sea. The results showed that the mean Hg concentration in squid muscle from the western South China Sea was lower than that in the eastern Indian Ocean. The Hg concentrations in flyingfish and squid muscle samples were positively correlated with organism size (length and weight) and δ15N in all the study areas. Furthermore, we found a negative correlation between Se and Hg in molar content of flyingfish and squid muscle from the western South China Sea. The Se:Hg molar ratio was significantly negative correlated with fish weight and δ15N, suggesting that the Se:Hg molar ratio decreases with the increase of fish size and trophic level in the food web.
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Affiliation(s)
- Xueying Wang
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
- Anhui Province Key Laboratory of Polar Environment and Global Change, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
| | - Libin Wu
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
- Anhui Province Key Laboratory of Polar Environment and Global Change, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
| | - Jing Sun
- School of Earth Sciences, University of Western Australia, 35 Stirling Highway, Perth, WA, 6009, Australia
| | - Yangyang Wei
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
- Anhui Province Key Laboratory of Polar Environment and Global Change, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
| | - Yongli Zhou
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
- Anhui Province Key Laboratory of Polar Environment and Global Change, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
| | - Zixuan Rao
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
- Anhui Province Key Laboratory of Polar Environment and Global Change, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
| | - Linxi Yuan
- Jiangsu Bio-Engineering Research Centre for Selenium, Suzhou, Jiangsu, People's Republic of China
| | - Xiaodong Liu
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, People's Republic of China.
- Anhui Province Key Laboratory of Polar Environment and Global Change, University of Science and Technology of China, Hefei, Anhui, People's Republic of China.
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13
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Fakhri Y, Saha N, Miri A, Baghaei M, Roomiani L, Ghaderpoori M, Taghavi M, Keramati H, Bahmani Z, Moradi B, Bay A, Pouya RH. Metal concentrations in fillet and gill of parrotfish (Scarus ghobban) from the Persian Gulf and implications for human health. Food Chem Toxicol 2018; 118:348-354. [PMID: 29782897 DOI: 10.1016/j.fct.2018.05.041] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 05/05/2018] [Accepted: 05/17/2018] [Indexed: 12/16/2022]
Abstract
Despite the benefits of seafood's consumption, the bioaccumulation of metals in fish can endanger consumers' health. This study analyzed lead (Pb), mercury (Hg), Arsenic (As), and Cadmium (Cd) concentrations in fillet and gill of parrotfish (Scarus ghobban) using flame atomic adsorption spectroscopy (FAAS). The potential non-carcinogenic and carcinogenic health risks due to consumption of Scarus ghobban fillet were assessed by estimating average target hazard quotient (THQ) and total target hazard quotient (TTHQ) and Incremental Lifetime Cancer Risk cancer risk (ILCR) of the analyzed metals. This study indicated that Cd, Pb, As and Hg concentrations were significantly (p < 0.05) lower than Food and Agriculture Organization (FAO) and national standard limits. The meal concentrations (μg/kg dry weight) in both fillet and gill were ranked as follows Pb > Cd > As > Hg. THQ and TTHQ were lower than 1 for adults and children, indicating that consumers were not at considerable non-carcinogenic risk. However, ILCR value for As was greater than 10-4, indicating that consumers are at carcinogenic risk. Overall, this research highlighted that although the consumption of parrotfish from the Persian Gulf does not pose non-carcinogenic health risks, carcinogenic risks derived from toxic As can be detrimental for local consumers.
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Affiliation(s)
- Yadolah Fakhri
- Department of Environmental Health Engineering, Student Research Committee, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Narottam Saha
- School of Earth and Environmental Sciences, The University of Queensland, Queensland, Australia
| | - Ali Miri
- Department of Nutrition, School of Health, Zabol University of Medical Sciences, Zabol, Iran
| | - Mehdi Baghaei
- Department of Environmental Engineering-Water and Wastewater, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran.
| | - Laleh Roomiani
- Department of Fisheries, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
| | - Mansour Ghaderpoori
- Department of Environmental Health Engineering, School of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Mahmoud Taghavi
- Department of Environmental Health Engineering, School of Public Health, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Hassan Keramati
- Department of Environmental Health Engineering, School of Public Health, Semnan University of Medical Sciences, Semnan, Iran
| | - Zohreh Bahmani
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Bigard Moradi
- Department of Health Public, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Abotaleb Bay
- Environmental Health Research Center, Golstan University of Medical Sciences, Golstan, Iran.
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14
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Baptista G, Kehrig HA, Di Beneditto APM, Hauser-Davis RA, Almeida MG, Rezende CE, Siciliano S, de Moura JF, Moreira I. Mercury, selenium and stable isotopes in four small cetaceans from the Southeastern Brazilian coast: Influence of feeding strategy. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 218:1298-1307. [PMID: 27593348 DOI: 10.1016/j.envpol.2016.08.088] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 07/28/2016] [Accepted: 08/31/2016] [Indexed: 06/06/2023]
Abstract
Dolphins are good bioindicators of the contamination status of marine ecosystems, since their dietary and habitat plasticity in both coastal and offshore ecotypes provide information on the trace elements levels originated from natural and anthropogenic sources. In this context, this study aimed to investigate provides mercury (Hg), selenium (Se) levels, trophic ecology and feeding environments of four small cetaceans (Tursiops truncatus, Steno bredanensis, Sotalia guianensis and Pontoporia blainvillei) inhabiting the central-northern coast of Rio de Janeiro State, southeastern Brazil. For the latter, δ15N and δ13C stable isotopes were used as indicators in this regard. Stable isotope values indicate that the four studied species have distinctive foraging habitats, coastal and least coastal, and occupy different trophic positions. The significant relationship found between muscle Hg and δ15N suggests that individual foraging preference remains relatively constant for the studied dolphin species over extended periods. The individual prey size and species are probably responsible for the differences found in Hg and Se concentrations in muscle tissue among all dolphin species. The vulnerable small coastal cetacean, P. blainvillei, which feeds on small teleost fish and squid, presented the lowest muscular Hg concentrations (less than 3.5 μg g-1 dry wt.). Meanwhile, S. bredanensis is more likely to uptake large amounts of trace elements among the four dolphin species, due to its feeding habits mainly being large offshore fish that accumulate high amounts of trace elements in organs and tissues. Differences found between Hg concentrations in fetus-mother pairs were much higher in S. guianensis than in P. blainvillei, suggesting that maternal contribution of Hg via placenta was more significant for the former.
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Affiliation(s)
- Gilberto Baptista
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, RJ 22453-900, Rio de Janeiro, Brazil.
| | - Helena A Kehrig
- Laboratório de Ciências Ambientais, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ 28013-602, Brazil.
| | - Ana Paula M Di Beneditto
- Laboratório de Ciências Ambientais, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ 28013-602, Brazil.
| | - Rachel A Hauser-Davis
- Universidade Federal do Estado do Rio de Janeiro, Programa de Pós-Graduação em Ciências Biológicas - Biodiversidade Neotropical, 22290-240, Rio de Janeiro - RJ, Brazil.
| | - Marcelo G Almeida
- Laboratório de Ciências Ambientais, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ 28013-602, Brazil.
| | - Carlos E Rezende
- Laboratório de Ciências Ambientais, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ 28013-602, Brazil.
| | - Salvatore Siciliano
- Instituto Oswaldo Cruz/FIOCRUZ, Pavilhão Mourisco - sala 122, Rio de Janeiro, RJ 21040-360, Brazil.
| | - Jailson F de Moura
- Leibniz Center for Tropical Marine Ecology - ZMT, Bremen, 28359, Germany.
| | - Isabel Moreira
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, RJ 22453-900, Rio de Janeiro, Brazil.
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15
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Adel M, Oliveri Conti G, Dadar M, Mahjoub M, Copat C, Ferrante M. Heavy metal concentrations in edible muscle of whitecheek shark, Carcharhinus dussumieri (elasmobranchii, chondrichthyes) from the Persian Gulf: A food safety issue. Food Chem Toxicol 2016; 97:135-140. [PMID: 27593900 DOI: 10.1016/j.fct.2016.09.002] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 08/30/2016] [Accepted: 09/01/2016] [Indexed: 10/21/2022]
Abstract
Together with several health benefits, fish meat could lead to heavy metal intoxication of consumers. In this study, we discuss Zn, Cu, Pb, Hg and Cd concentrations in fillets of forty specimens of Carcharhinus dussumieri, analyzed with atomic adsorption spectroscopy (AAS). The potential human health risks due to consumption of C. dussumieri was assessed by estimating average daily intake (EDI) and target hazard quotient (THQ) of metals. The average concentrations of metals measured in this study were (ppm dry weight): Cu 7.49 ± 0.25; Zn 3.47 ± 0.26; Pb 0.12 ± 0.03; Hg 0.028 ± 0.02; Cd 0.11 ± 0.03. Our results showed that no metal exceeded the EC and FAO limits. Cu and Cd accumulate in muscles with a body length (age)-dependent manner. The exposure daily intake of all toxic metals analyzed was found lower than the PTDI provided by WHO and the THQ resulted lower than 1, suggesting no risk for human health derived from consumption.
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Affiliation(s)
- Milad Adel
- Department of Aquatic Animal Health and Diseases, Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran
| | - Gea Oliveri Conti
- Department of Medical Sciences, Surgical and Advanced Technologies "G.F. Ingrassia"- Hygiene and Public Health, Laboratory of Environmental and Food Hygiene (LIAA), University of Catania, Via S. Sofia, 87, 95123 Catania, Italy.
| | - Maryam Dadar
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Masoud Mahjoub
- Department of Aquatic Animal Health and Diseases, Iranian Shrimp Research Center, Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Bushehr, Iran
| | - Chiara Copat
- Department of Medical Sciences, Surgical and Advanced Technologies "G.F. Ingrassia"- Hygiene and Public Health, Laboratory of Environmental and Food Hygiene (LIAA), University of Catania, Via S. Sofia, 87, 95123 Catania, Italy
| | - Margherita Ferrante
- Department of Medical Sciences, Surgical and Advanced Technologies "G.F. Ingrassia"- Hygiene and Public Health, Laboratory of Environmental and Food Hygiene (LIAA), University of Catania, Via S. Sofia, 87, 95123 Catania, Italy
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16
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Blaber SJM, Barletta M. A review of estuarine fish research in South America: what has been achieved and what is the future for sustainability and conservation? JOURNAL OF FISH BIOLOGY 2016; 89:537-568. [PMID: 26864605 DOI: 10.1111/jfb.12875] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 11/16/2015] [Indexed: 06/05/2023]
Abstract
Estuarine fish research in South America began in the early 20th Century, but it is only within the last 40 years that detailed studies have been undertaken. This review firstly summarizes research results from South American estuaries by geographic area, starting with the temperate south-east, then the temperate-sub-tropical transition zone in Brazil, then the semi-arid and tropical estuaries of north and north-east Brazil including the Amazon complex, then the north and Caribbean coasts and finally down the Pacific coast of the continent. They include almost all types of estuarine systems, from large open systems (e.g. the temperate Rio de La Plata and tropical Amazon) to extensive coastal lakes (e.g. the temperate Patos Lagoon and tropical Cienega Grande de Santa Marta). They encompass a broad range of climatic and vegetation types, from saltmarsh systems in the south-east and fjords in the south-west to both arid and humid tropical systems, dominated by mangroves in the north. Their tidal regimes range from microtidal (e.g. Mar Chiquita, Argentina) through mesotidal (e.g. Goiana, Brazil) to macrotidal in the Amazon complex where they can exceed 7 m. The review uses where possible the recent standardization of estuarine fish categories and guilds, but the ways that fishes use tropical South American systems may necessitate further refinements of the categories and guilds, particularly in relation to freshwater fishes, notably the Siluriformes, which dominate many north and north-east South American systems. The extent to which South American studies contribute to discussions and paradigms of connectivity and estuarine dependence is summarized, but work on these topics has only just begun. The anthropogenic issue of pollution, particularly in relation to heavy metals and fishes and fisheries in estuaries is more advanced, but the possible effects of climate change have barely been addressed. Studies around conservation and management are briefly reviewed and the extent to which key factors are being addressed is examined. Although there have been major advances in knowledge of estuarine fishes in South America, information is patchy, with most data from relatively few systems in Argentina and Brazil.
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Affiliation(s)
- S J M Blaber
- CSIRO Oceans and Atmosphere, G. P. O. Box 2583, Brisbane, Queensland, 4001, Australia
| | - M Barletta
- Laboratory of Ecology and Management of Estuarine and Coastal Ecosystem, Departamento de Oceanografia, UFPE, Cidade Universitária, 50740-550, Recife, Pernambuco, Brazil
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17
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Souza-Araujo J, Giarrizzo T, Lima MO, Souza MBG. Mercury and methyl mercury in fishes from Bacajá River (Brazilian Amazon): evidence for bioaccumulation and biomagnification. JOURNAL OF FISH BIOLOGY 2016; 89:249-263. [PMID: 27241551 DOI: 10.1111/jfb.13027] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 04/18/2016] [Indexed: 06/05/2023]
Abstract
This study assessed total mercury (THg) and methyl mercury (MeHg) concentrations, bioaccumulation and biomagnification of THg through the food web in fishes consumed by indigenous communities of Bacajá River, the largest tributary of the right bank of Xingu River. In total, 496 fish (22 species) were sampled. Nine species had THg concentrations above the limit recommended by the World Health Organisation (0·5 µg g(-1) wet mass), and one exceeded the recommended level for Hg in predatory fishes by Brazilian law (1·0 µg g(-1) ). The average concentration of THg increased significantly with trophic guild (herbivorous to piscivorous) and trophic level, with higher accumulation in fishes with greater total length. Ninety-six per cent of all mercury was methylated. These results suggest that feeding habits determine THg concentrations in fishes and that Hg elimination rate is slow during growth, which allows greater accumulation. These findings show that fishes in the Bacajá River contain high concentrations of THg and MeHg.
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Affiliation(s)
- J Souza-Araujo
- Aquatic Ecology Group, Federal University of Pará, Avenida Perimetral 2651, Terra Firme, 66040170, Belém, PA, Brazil
| | - T Giarrizzo
- Aquatic Ecology Group, Federal University of Pará, Avenida Perimetral 2651, Terra Firme, 66040170, Belém, PA, Brazil
| | - M O Lima
- Evandro Chagas Institute, Environment Section, Rodovia BR-316, km 7, S/N, Levilândia, 67030000, Ananindeua, PA, Brazil
| | - M B G Souza
- Tractebel Engineering-LEME Engineering, Avenida dos Andradas 3000, Santa Efigênia, 30260070, Belo Horizonte, MG, Brazil
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18
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Seixas TG, Moreira I, Kehrig HA. Mercury and selenium in seston, marine plankton and fish (Sardinella brasiliensis) as a tool for understanding a tropical food web. MARINE POLLUTION BULLETIN 2015; 101:366-369. [PMID: 26478456 DOI: 10.1016/j.marpolbul.2015.10.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 10/01/2015] [Accepted: 10/08/2015] [Indexed: 06/05/2023]
Abstract
Mercury (Hg) and selenium (Se) concentrations were evaluated in a planktivorous fish and four size classes of organisms (FSCO), collected at an oligotrophic bay in the Southeastern Brazilian coast. No significant spatial differences between Hg and Se were found in the FSCO within the five sampling points in the bay. Hg and Se concentrations increased with successive increases in the size class of the analyzed plankton, i.e. approximately 3-and 2-fold, respectively, from microplankton to macroplankton. Hg and Se biomagnified throughout the planktonic food web. The smallest size class of organism, seston, composed of both biotic and abiotic portions, and fish showed the highest Hg concentrations. This indicates that Hg is not biomagnifying in the base of the bay food web. Selenium concentrations in fish were approximately 5.9 times higher than those in seston. Hg and Se concentrations in fish were approximately 3.5 and 14.6 times higher than those found in the plankton, respectively.
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Affiliation(s)
- Tércia Guedes Seixas
- Dep. de Química, Pontifícia Universidade Católica do Rio de Janeiro, 22453-900 Rio de Janeiro, Brazil.
| | - Isabel Moreira
- Dep. de Química, Pontifícia Universidade Católica do Rio de Janeiro, 22453-900 Rio de Janeiro, Brazil.
| | - Helena Amaral Kehrig
- Lab. de Ciências Ambientais, Universidade Estadual do Norte Fluminense, 28013-602 Campos dos Goytacazes, RJ, Brazil.
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19
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García-Alvarez N, Fernández A, Boada LD, Zumbado M, Zaccaroni A, Arbelo M, Sierra E, Almunia J, Luzardo OP. Mercury and selenium status of bottlenose dolphins (Tursiops truncatus): A study in stranded animals on the Canary Islands. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 536:489-498. [PMID: 26232758 DOI: 10.1016/j.scitotenv.2015.07.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 07/07/2015] [Accepted: 07/07/2015] [Indexed: 06/04/2023]
Abstract
The mercury (Hg) level in the marine environment has tripled in recent decades, becoming a great concern because of its high toxic potential. This study reports Hg and selenium (Se) status, and the first Se/Hg molar ratio assessment in bottlenose dolphins (Tursiops truncatus) inhabiting the waters of the Canary Islands. Total Hg and Se concentrations were determined in the blubber and liver collected from 30 specimens stranded along the coasts of the archipelago from 1997 to 2013. The median values for total Hg in the blubber and liver were 80.83 and 223.77 μg g(-1) dry weight (dw), and the median levels for Se in both tissues were 7.29 and 68.63 μg g(-1) dw, respectively. Hg concentrations in the liver were lower than 100 μg g(-1) wet weight (ww), comparable to those obtained in bottlenose dolphins from the North Sea, the Western Atlantic Ocean and several locations in the Pacific Ocean. The Mediterranean Sea and South of Australia are the most contaminated areas for both elements in this cetacean species. In addition, it must be stressed that the levels of Hg and Se in the liver showed an increasing trend with the age of the animals. As expected, a strong positive correlation between Hg and Se was observed (rs=0.960). Surprisingly, both younger and older specimens had a Se/Hg molar ratio different from 1, suggesting that these individuals may be at greater toxicological risk for high concentrations of both elements or a deficiency of Se without a protective action against Hg toxicity.
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Affiliation(s)
- Natalia García-Alvarez
- Unit of Histology and Pathology, Institute of Animal Health (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35413 Arucas, Las Palmas, Spain.
| | - Antonio Fernández
- Unit of Histology and Pathology, Institute of Animal Health (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35413 Arucas, Las Palmas, Spain
| | - Luis D Boada
- Toxicology Unit, Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, 35016 Las Palmas de Gran Canaria, Spain
| | - Manuel Zumbado
- Toxicology Unit, Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, 35016 Las Palmas de Gran Canaria, Spain
| | - Annalisa Zaccaroni
- Department of Veterinary Medical Sciences, University of Bologna, Research Group on Large Pelagic Vertebrates, Viale Vespucci 2, 47042 Cesenatico, FC, Italy
| | - Manuel Arbelo
- Unit of Histology and Pathology, Institute of Animal Health (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35413 Arucas, Las Palmas, Spain
| | - Eva Sierra
- Unit of Histology and Pathology, Institute of Animal Health (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35413 Arucas, Las Palmas, Spain
| | - Javier Almunia
- Loro Parque Foundation, Camino Burgado, 38400 Puerto de la Cruz (Tenerife), Santa Cruz de Tenerife, Spain
| | - Octavio P Luzardo
- Toxicology Unit, Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, 35016 Las Palmas de Gran Canaria, Spain
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20
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Meng M, Shi JB, Liu CB, Zhu NL, Shao JJ, He B, Cai Y, Jiang GB. Biomagnification of mercury in mollusks from coastal areas of the Chinese Bohai Sea. RSC Adv 2015. [DOI: 10.1039/c5ra02919h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Biomagnification of methylmercury and growth dilution of inorganic mercury were found during the trophic transfer of mercury in different mollusk species.
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Affiliation(s)
- Mei Meng
- State Key Laboratory of Environmental Chemistry and Ecotoxicology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Jian-bo Shi
- State Key Laboratory of Environmental Chemistry and Ecotoxicology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Cheng-bin Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Na-li Zhu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Jun-juan Shao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Bin He
- State Key Laboratory of Environmental Chemistry and Ecotoxicology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Yong Cai
- Institute of Environment and Health
- Jianghan University
- Wuhan 430056
- China
- Department of Chemistry & Biochemistry and Southeast Environmental Research Center
| | - Gui-bin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
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Pollman CD. Mercury cycling in aquatic ecosystems and trophic state-related variables--implications from structural equation modeling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 499:62-73. [PMID: 25173863 DOI: 10.1016/j.scitotenv.2014.08.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 08/08/2014] [Accepted: 08/09/2014] [Indexed: 06/03/2023]
Abstract
Structural equation modeling (SEM) provides a framework that can more properly handle complex variable interactions inherent in mercury cycling and its bioaccumulation compared to more traditional regression-based methods. SEM was applied to regional data sets for three different types of aquatic ecosystems within Florida, USA--lakes, streams, and the Everglades--to evaluate the underlying nature (i.e., indirect and direct) of the relationships between fish mercury concentrations and trophic state related variables such as nutrients, dissolved organic carbon (DOC), sulfate, and alkalinity. The modeling results indicated some differences in key variable relationships--for example, the effect of nutrients on fish mercury in lakes and streams was uniformly negative through direct and indirect pathways consistent with biodilution or eutrophication-associated effects on food web structure. Somewhat surprisingly, however, was that total phosphorus did not serve as a meaningful variable in the Everglades model, apparently because its effects were masked or secondary to the effects of DOC. What is perhaps a more important result were two key similarities across the three systems. First, the modeling clearly indicates that the dominant influence on fish tissue mercury concentrations in all three systems is related to variations in the methylmercury signal. Second, the modeling demonstrated that the effect of DOC on fish mercury concentrations was exerted through multiple and antagonistic pathways, including facilitated transport of total mercury and methylmercury, enhanced rates of methylation, and limitations imposed on bioavailability. Indeed, while the individual DOC pathways in the models were all highly significant (generally p<0.001), the net effect of DOC in each model was greatly reduced or insignificant. These results can help explain contradictory results obtained previously by other researchers in other systems, and illustrate the importance of SEM as a modeling tool when studying systems with complex interactions such as the aquatic mercury cycle.
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Pollman CD, Axelrad DM. Mercury bioaccumulation factors and spurious correlations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 496:vi-xii. [PMID: 25087751 DOI: 10.1016/j.scitotenv.2014.07.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 07/08/2014] [Accepted: 07/08/2014] [Indexed: 06/03/2023]
Abstract
While bioaccumulation factors (BAF) - the ratio of biota contaminant concentrations (Cbiota) to aqueous phase contaminant concentrations (Cw) - are useful in evaluating the accumulation of mercury (Hg) and other contaminants for various trophic levels in aquatic ecosystems, reduction of the underlying relationship between Cbiota and Cw to a single ratio (BAF) has inherent risks, including spurious correlation. Despite a long and rich history of remonstrations in the literature, several very recent publications evaluating Hg-related BAFs have suffered from false conclusions based on spurious correlation, and thus it seems that periodic reminders of the causes and risks of these errors are required. Herein we cite examples and explanations for unsupported conclusions from publications where authors using BAF-Cw relationships fail to recognize the underlying statistical significance (or lack thereof) of direct relationships between Cw and Cbiota. This fundamental error leads to other problems, including ascribing mechanistic significance (e.g., mechanisms related to biota contaminant uptake) to "inverse" BAF-Cw relationships that reflect nothing more than regressing the log transformed inverse of Cw (i.e., negative log) against itself (i.e., positive log transformed), and using such regression models of BAF-Cw relationships that appear significant for predictive purposes, but are misleading. Spurious correlation arising in the analysis of BAF relationships can potentially appear in more subtle forms as well, including regressing variables such as dissolved organic carbon (DOC) that are correlated with Cw. We conclude that conducting a direct analysis by examining the relationship between Cbiota and Cw (or Cbiota and other variables) rather than evaluating a ratio (BAF) is less ambiguous and subject to error, more easily interpreted, and would lead to more supportable conclusions.
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Affiliation(s)
| | - Donald M Axelrad
- Florida A&M University, Institute of Public Health, 1515 South Martin Luther King Blvd, Tallahassee, FL 32307, USA.
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