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Yan K, Guo F, Kainz MJ, Li F, Gao W, Bunn SE, Zhang Y. The importance of omega-3 polyunsaturated fatty acids as high-quality food in freshwater ecosystems with implications of global change. Biol Rev Camb Philos Soc 2024; 99:200-218. [PMID: 37724488 DOI: 10.1111/brv.13017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 09/03/2023] [Accepted: 09/08/2023] [Indexed: 09/20/2023]
Abstract
Traditionally, trophic ecology research on aquatic ecosystems has focused more on the quantity of dietary energy flow within food webs rather than food quality and its effects on organisms at various trophic levels. Recent studies emphasize that food quality is central to consumer growth and reproduction, and the importance of food quality for aquatic ecosystems has become increasingly well recognized. It is timely to synthesise these findings and identify potential future research directions. We conducted a systematic review of omega-3 polyunsaturated fatty acids (ω3-PUFAs) as a crucial component of high-quality food sources in freshwater ecosystems to evaluate their impact on a variety of consumers, and explore the effects of global change on these high-quality food sources and their transfer to higher trophic consumers within and across ecosystems. In freshwater ecosystems, algae rich in ω3 long-chain PUFAs, such as diatoms, dinoflagellates and cryptophytes, represent important high-quality food sources for consumers, whereas cyanobacteria, green algae, terrestrial vascular plants and macrophytes low in ω3 long-chain PUFAs are low-quality food sources. High-quality ω3-PUFA-containing food sources usually lead to increased growth and reproduction of aquatic consumers, e.g. benthic invertebrates, zooplankton and fish, and also provide ω3 long-chain PUFAs to riparian terrestrial consumers via emergent aquatic insects. Consumers feeding on high-quality ω3-PUFA-containing foods in turn represent high-quality food for their own predators. However, the ω3-PUFA content of food sources is sensitive to global environmental changes. Warming, eutrophication, increased light intensity (e.g. from loss of riparian shading), and pollutants potentially inhibit the synthesis of algal ω3-PUFAs while at the same time promoting the growth of lower-quality foods, such as cyanobacteria and green algae. These factors combined could lead to a significant reduction in the availability of ω3-PUFAs for consumers and constrain their overall fitness. Although the effect of individual environmental factors on high-quality ω3-PUFA-containing food sources has been investigated, multiple environmental factors (e.g. climate change, human activities, pollution) will act in combination and any synergistic effects on aquatic food webs remain unclear. Identifying the sources and fate of ω3-PUFAs within and across ecosystems could represent an important approach to understand the impact of multiple environmental factors on trophic relationships and the implications for populations of freshwater and riparian consumers. Maintaining the availability of high-quality ω3-PUFA-containing food sources may also be key to mitigating freshwater biodiversity loss due to global change.
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Affiliation(s)
- Keheng Yan
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Fen Guo
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Martin J Kainz
- WasserCluster Lunz - Biologische Station, Lunz am See, 3293, Austria
- Danube University Krems, Research Lab for Aquatic Ecosystems and Health, Krems, 3500, Austria
| | - Feilong Li
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Wei Gao
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Stuart E Bunn
- Australian Rivers Institute, Griffith University, Nathan, Queensland, Australia
| | - Yuan Zhang
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
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2
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Wickrama-Arachchige AUK, Guruge KS, Tani H, Dharmaratne TS, Kumara MP, Niizuma Y, Ohura T. Comparative Study on the Distribution of Essential, Non-Essential Toxic, and Other Elements across Trophic Levels in Various Edible Aquatic Organisms in Sri Lanka and Dietary Human Risk Assessment. TOXICS 2022; 10:toxics10100585. [PMID: 36287865 PMCID: PMC9612099 DOI: 10.3390/toxics10100585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/28/2022] [Accepted: 09/28/2022] [Indexed: 06/01/2023]
Abstract
Thirty-six elements are categorized as essential but toxic in excess amount (EBTEs), non-essential toxic (NETs), and Other in 29 different edible aquatic species dwelling in offshore pelagic, and coastal and estuarine (CE) ecosystems were investigated in Sri Lanka. Elements were analyzed using an energy-dispersive X-ray fluorescence (EDXRF) spectrometer, and an NIC MA-3000 Mercury Analyzer. EBTEs showed a negative relationship, whereas NETs showed a positive relationship between the concentration (mg/kg wet weight) and trophic levels in both ecosystems. EBTEs showed trophic dilution, whereas NETs showed trophic magnification. Some elements in a few organisms exceeded the maximum allowable limit which is safe for human consumption. There was a positive relationship (R2 = 0.85) between the concentration of mercury and body weight of yellowfin tuna (YFT). For the widely consumed YFT, the calculated hazard index (HI) for the non-carcinogenic health and exposure daily intake of NETs for adults were 0.27 and 9.38 × 10-5 mg/kg bw/day, respectively. The estimated provisional tolerable weekly intake (PTWI) (μg/kg bw/w) was 0.47 for arsenic and 0.05 for antimony, cadmium, mercury, and lead. The HI and PTWI values were below the recommended limits; thus, consumption of YFT does not pose any health risk for Sri Lankan adults.
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Affiliation(s)
| | - Keerthi S. Guruge
- Division of Hygiene Management Research, National Institute of Animal Health, National Agriculture and Food Research Organization, Tsukuba 305-0856, Japan
- Graduate School of Veterinary Science, Osaka Metropolitan University, Osaka 598-8531, Japan
| | - Hinako Tani
- Graduate School of Agriculture, Meijo University, Nagoya 468-8502, Japan
| | - Tilak Siri Dharmaratne
- Faculty of Fisheries and Ocean Sciences, Ocean University of Sri Lanka, Tangalle HB 82200, Sri Lanka
- Gem and Jewelry Research and Training Institute, Kaduwela CO 10115, Sri Lanka
| | - Marappullige P. Kumara
- Faculty of Fisheries and Ocean Sciences, Ocean University of Sri Lanka, Tangalle HB 82200, Sri Lanka
| | - Yasuaki Niizuma
- Graduate School of Agriculture, Meijo University, Nagoya 468-8502, Japan
| | - Takeshi Ohura
- Graduate School of Agriculture, Meijo University, Nagoya 468-8502, Japan
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3
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Hina N, Riaz R, Ali U, Rafique U, Malik RN. A Quantitative Assessment and Biomagnification of Mercury and Its Associated Health Risks from Fish Consumption in Freshwater Lakes of Azad Kashmir, Pakistan. Biol Trace Elem Res 2021; 199:3510-3526. [PMID: 33409920 DOI: 10.1007/s12011-020-02479-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 11/06/2020] [Indexed: 10/22/2022]
Abstract
Issues regarding biomagnification of mercury (Hg) due to its persistence, bioaccumulation, and toxicity in freshwater lakes have gained much attention in the last two decades especially in remote regions of the world where anthropogenic inputs are considered as negligible. In this study, spatial distribution of total mercury (THg), interspecific accumulation patterns, trophic transfer, and associated health risks in fish of freshwater lakes (357-3107 masl) in Azad Kashmir, Pakistan, were investigated. THg concentrations in the regions were 0.20 ± 0.08 μg g-1 in glacial, 0.54 ± 0.21 μg g-1 in rural, and 1.35 ± 0.46 μg g-1 in urban region. Omnivorous, herbivorous, and carnivorous fish showed THg concentrations of 0.94, 0.85, and 0.49 μg g-1. Regional, lake, trophic level, and specie-specific differences of THg accumulation were found significant in the study. Among growth parameters, length and age varied significantly among species, trophic levels, and lakes, whereas weight showed significant variation among lakes as well. Condition factor (K) showed significant differences within species, lakes, and trophic levels. Biomagnification was observed in all lakes with the trophic magnification slopes (TMS) ranging from 0.03 to 0.20 with an average of 0.094 ± 0.07. Isotopic values of nitrogen (δ15N) and condition factor were found to dominate THg accumulation trends; however, no significant health risks were found in the study.
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Affiliation(s)
- Nikhat Hina
- Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad, Islamabad, PO 45320, Pakistan.
| | - Rahat Riaz
- Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad, Islamabad, PO 45320, Pakistan
| | - Usman Ali
- Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad, Islamabad, PO 45320, Pakistan
| | - Uzaira Rafique
- Department of Environmental Sciences, Fatima Jinnah Women University, Rawalpidi, 46000, Pakistan
| | - Riffat Naseem Malik
- Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad, Islamabad, PO 45320, Pakistan
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4
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Jing M, Lin D, Wu P, Kainz MJ, Bishop K, Yan H, Li Q, Feng X. Diet influence on mercury bioaccumulation as revealed by polyunsaturated fatty acids in zoobenthos from two contrasting environments: Chinese reservoirs and Swedish lakes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 782:146410. [PMID: 33839663 DOI: 10.1016/j.scitotenv.2021.146410] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/06/2021] [Accepted: 03/06/2021] [Indexed: 06/12/2023]
Abstract
The bioaccumulation of mercury (Hg) and polyunsaturated fatty acids (PUFA) in zoobenthos varies across aquatic food webs. In this field study, contents of total Hg (THg), methylmercury (MeHg) and PUFA were investigated in zoobenthos of Chinese reservoirs and Swedish lakes, with contrasting environmental characteristics and algal diet sources, which can result in difference of Hg and PUFA in zoobenthos from these two habits. Using PUFA as dietary biomarkers of algae in zoobenthos, we evaluated effects of environmental factors and algal diet sources on the accumulation of THg, MeHg, and the highly required PUFA eicosapentaenoic (EPA, 20: 5n-3) and docosahexaenoic acid (DHA, 22:6n-3) in zoobenthos. Average THg and MeHg in zoobenthos were higher in Chinese reservoirs than Swedish lakes (p < 0.05). Average EPA content of zoobenthos was similar in these two habitats (p > 0.05), yet average DHA content of zoobenthos was higher in Chinese reservoirs than Swedish lakes (p < 0.05). Total Hg and MeHg contents of zoobenthos in Swedish lakes were predicted by environmental factors; e.g., negatively with pH and positively with dissolved organic carbon (DOC) concentrations, yet had no significant relationship with the algal dietary. In Chinese reservoirs, however, no environmental factor correlated well with THg contents in zoobenthos, and only DOC concentrations showed positive correlation with MeHg contents in zoobenthos. Besides, the algal dietary was also positively correlated with MeHg contents in zoobenthos. EPA and DHA contents of zoobenthos in Swedish lakes primarily associated with algal diet. By contrast, in Chinese reservoirs, EPA and DHA contents of zoobenthos were affected by both environmental factors and algal diet.
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Affiliation(s)
- Min Jing
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China; School of Public Health, Guizhou Medical University, Guiyang 550025, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Dan Lin
- School of Public Health, Guizhou Medical University, Guiyang 550025, PR China
| | - Pianpian Wu
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Sweden
| | - Martin J Kainz
- WasserCluster - Biologische Station Lunz, Inter-University Center for Aquatic Ecosystems Research, Lunz am See, Austria; Department of Health Sciences, Medicine and Research, Danube-University Krems, Austria
| | - Kevin Bishop
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Sweden
| | - Haiyu Yan
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China.
| | - Qiuhua Li
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province Guizhou Normal University, Guiyang 550000, PR China
| | - Xinbin Feng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China
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Dal'Olio Gomes A, Gomes FR, Gücker B, Tolussi CE, Figueredo CC, Boëchat IG, Maruyama LS, Oliveira LC, Muñoz-Peñuela M, Pompêo MLM, de Lima Cardoso R, Marques VH, Moreira RG. Eutrophication effects on fatty acid profiles of seston and omnivorous fish in tropical reservoirs. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 781:146649. [PMID: 33794454 DOI: 10.1016/j.scitotenv.2021.146649] [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: 11/12/2020] [Revised: 03/17/2021] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
It has been postulated that eutrophication causes replacement of n3 highly unsaturated fatty acids (n3 HUFA) rich taxa, such as Bacillariophyta, Cryptophyta and Dinophyta, with taxa poor in these fatty acids (FA), such as Chlorophyta and Cyanobacteria. Such a change in community composition at the basis of the food web may alter the FA composition of consumer tissues. Here, we investigated the effects of eutrophication on phytoplankton composition and FA profiles of seston and muscle of two omnivorous fish species (Astyanax fasciatus and Astyanax altiparanae) from reservoirs of different trophic status in Southeast Brazil. The phytoplankton composition and seston FA profiles reflected the degree of eutrophication at most of the studied sites. Three of the five most eutrophic sites were dominated by cyanobacteria and had the highest saturated fatty acid (SFA) and lowest polyunsaturated fatty acid (PUFA) relative contents among all sites. In contrast, the remaining two sites presented a higher phytoplankton diversity and higher relative contribution of sestonic PUFAs with 18 carbons (C18) and HUFAs than less eutrophic systems. However, there were no clear effects of sestonic FA profiles on the FA profiles of muscle of both fish species. A higher percentage of n3 HUFAs was found in the fish samples from a hypereutrophic and cyanobacteria dominated reservoir than in those from sites with a more diverse phytoplankton community in which fish mainly showed higher percentages of C18 PUFA. These results suggest a lack of a direct relationship between the degree of eutrophication and the percentage of n3 HUFAs in both fish species, which can be caused by specific characteristics of the reservoirs that may modulate eutrophication effects. Therefore, consumer FA biochemistry seemed to be dictated by their ability to select, accumulate, and modify dietary FAs, rather than by the eutrophication degree of the studied tropical reservoirs.
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Affiliation(s)
- Aline Dal'Olio Gomes
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 101, SP 05508-090, Brazil.
| | - Fernando Ribeiro Gomes
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 101, SP 05508-090, Brazil
| | - Björn Gücker
- Departamento de Geociências, Universidade Federal São João del-Rei, São João del-Rei, MG, Brazil
| | | | - Cleber Cunha Figueredo
- Departamento de Botânica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Iola Gonçalves Boëchat
- Departamento de Geociências, Universidade Federal São João del-Rei, São João del-Rei, MG, Brazil
| | | | - Lucas Chagas Oliveira
- Departamento de Botânica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Marcela Muñoz-Peñuela
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 101, SP 05508-090, Brazil
| | | | - Rayssa de Lima Cardoso
- Universidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, Sorocaba, Brazil
| | - Victor Hugo Marques
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 101, SP 05508-090, Brazil
| | - Renata Guimarães Moreira
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 101, SP 05508-090, Brazil
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6
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Thomsen ST, Assunção R, Afonso C, Boué G, Cardoso C, Cubadda F, Garre A, Kruisselbrink JW, Mantovani A, Pitter JG, Poulsen M, Verhagen H, Ververis E, Voet HVD, Watzl B, Pires SM. Human health risk-benefit assessment of fish and other seafood: a scoping review. Crit Rev Food Sci Nutr 2021; 62:7479-7502. [PMID: 33951954 DOI: 10.1080/10408398.2021.1915240] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Fish and other seafood are important sources of nutrients, but they are also sources of chemical contaminants that may cause adverse health effects. This article aimed to identify existing risk-benefit assessments (RBA) of fish, shellfish, and other seafood, compare methodologies, discuss differences and commonalities in findings, and identify limitations and ways forward for future studies. We conducted a scoping review of the scientific literature of studies in all languages published from 2000 through April 2019. We identified 106 RBA of fish and other seafood across Europe, Asia, North America, Africa, and at the global level. Studies were heterogeneous in terms of types of fish and other seafood considered, beneficial and adverse compounds assessed, and overall methodology. Collected data showed that a diet consisting of a variety of lean and fatty fish and other seafood is recommended for the overall population and that women of childbearing age and children should limit the consumption of fish and other seafood types that have a high likelihood of contamination. Our review emphasizes the need for evidence-based, up-to-date, and harmonized approaches in RBA in general.
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Affiliation(s)
- Sofie Theresa Thomsen
- Division of Diet, Disease Prevention and Toxicology, Technical University of Denmark, Copenhagen, Denmark
| | - Ricardo Assunção
- Food and Nutrition Department, National Institute of Health Doutor Ricardo Jorge, Lisboa, Portugal.,CESAM, Centre for Environmental and Marine Studies, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - Cláudia Afonso
- Division of Aquaculture, Upgrading and Bioprospection (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, IP), Portugal
| | - Géraldine Boué
- National Research Institute for Agriculture, Food and Environment (INRAe), Oniris, Secalim UMR 1014, Nantes, France
| | - Carlos Cardoso
- Division of Aquaculture, Upgrading and Bioprospection (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, IP), Portugal
| | - Francesco Cubadda
- Istituto Superiore di Sanità - National Institute of Health, Rome, Italy
| | - Alberto Garre
- Wageningen University & Research, Wageningen, the Netherlands
| | | | - Alberto Mantovani
- Istituto Superiore di Sanità - National Institute of Health, Rome, Italy
| | | | - Morten Poulsen
- Division of Diet, Disease Prevention and Toxicology, Technical University of Denmark, Copenhagen, Denmark
| | - Hans Verhagen
- Division of Diet, Disease Prevention and Toxicology, Technical University of Denmark, Copenhagen, Denmark.,European Food Safety Authority (EFSA), Parma, Italy.,University of Ulster, Northern, Ireland
| | - Ermolaos Ververis
- European Food Safety Authority (EFSA), Parma, Italy.,School of Medicine, National and Kapodistrian University of Athens (NKUA), Athens, Greece
| | | | - Bernhard Watzl
- Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Karlsruhe, Germany
| | - Sara M Pires
- Division of Diet, Disease Prevention and Toxicology, Technical University of Denmark, Copenhagen, Denmark
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7
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Twining CW, Razavi NR, Brenna JT, Dzielski SA, Gonzalez ST, Lawrence P, Cleckner LB, Flecker AS. Emergent Freshwater Insects Serve as Subsidies of Methylmercury and Beneficial Fatty Acids for Riparian Predators Across an Agricultural Gradient. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:5868-5877. [PMID: 33878866 DOI: 10.1021/acs.est.0c07683] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Aquatic-to-terrestrial subsidies have the potential to provide riparian consumers with benefits in terms of physiologically important organic compounds like omega-3 long-chain polyunsaturated fatty acids (n-3 LCPUFAs). However, they also have a "dark side" in the form of exposure to toxicants such as mercury. Human land use intensity may also determine whether subsidies provide benefits or come at a cost for riparian predators. We sampled insects as well as Eastern Phoebe (Sayornis phoebe) chicks in 2015-2016 within the southern Finger Lakes region to understand how food quality, in terms of n-3 LCPUFAs and methylmercury (MeHg), of emergent freshwater insects compared with that of terrestrial insects and how land use affected the quality of prey, predator diet composition, and MeHg exposure. Across the landscape, freshwater insects had a significantly higher percentage of the n-3 LCPUFA eicosapentaenoic acid (EPA) compared to terrestrial insects and contained significantly more MeHg than terrestrial insects did. In spite of differences in MeHg concentrations between aquatic and terrestrial insects, chick MeHg concentrations were not related to diet composition. Instead, chick MeHg concentrations increased with several metrics of human land use intensity, including percent agriculture. Our findings suggest that freshwater subsidies provide predators with both risks and benefits, but that predator MeHg exposure can vary with human land use intensity.
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Affiliation(s)
- Cornelia W Twining
- Max Planck Institute of Animal Behavior 78315 Radolfzell, Germany
- Limnological Institute, University of Konstanz 78464 Konstanz, Germany
| | - N Roxanna Razavi
- Department of Environmental Biology, State University of New York College of Environmental Science and Forestry Syracuse, New York 13210, United States
| | - J Thomas Brenna
- Division of Nutritional Sciences, Cornell University Ithaca, New York 14850, United States
- University of Texas, Austin, Dell Pediatric Research Center Austin, Texas 78712, United States
| | - Sarah A Dzielski
- Department of Environmental Biology, State University of New York College of Environmental Science and Forestry Syracuse, New York 13210, United States
| | - Sara T Gonzalez
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz Santa Cruz, California 95064, United States
| | - Peter Lawrence
- Division of Nutritional Sciences, Cornell University Ithaca, New York 14850, United States
| | - Lisa B Cleckner
- Hobart and William Smith Colleges, Finger Lakes Institute Geneva, New York 14456, United States
| | - Alexander S Flecker
- Department of Ecology and Evolutionary Biology, Cornell University Ithaca, New York 14850, United States
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8
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Boëchat IG, Krüger A, Soares EM, Figueredo CC, Contin AM, Pinheiro PL, Abrantes GHP, Cardozo FS, Gücker B. Fatty acids reveal aquaculture and drought effects on a large tropical reservoir. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 755:142660. [PMID: 33049529 DOI: 10.1016/j.scitotenv.2020.142660] [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: 05/20/2020] [Revised: 09/17/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
Fatty acids (FAs) and their metrics have been used to detect and assess the impacts of urbanization and agriculture on aquatic ecosystems. Here, we investigated whether seston FAs are also useful to characterize and understand early-stage aquaculture impacts in a large tropical reservoir (Furnas Reservoir, SE Brazil). We tested the hypothesis that single FAs, as well as selected FA metrics in the seston fraction, are efficient markers of net-cage fish farming effects. In general, fish farming had only minor effects on standard water chemical variables, mainly small increases in ammonium, nitrate, and dissolved organic nitrogen concentrations. By increasing concentrations of several polyunsaturated FAs, early-stage fish farming improved sestonic food quality in the more oligotrophic branch of the reservoir under drought conditions. However, in general, increases in concentrations of bacterial FAs, due to fish farming, suggested organic matter (OM) subsidies from non-ingested and non-assimilated fish feed. In the more eutrophic reservoir branch, seston FA profiles suggested that fish farming caused an increase of low-quality food resources, such as cyanobacteria. Thus, background impact levels may determine the biochemical responses of tropical reservoirs to fish farming. Higher contributions of potentially sewage-derived and bacterial FAs during drought conditions, especially at reference sites of the more oligotrophic branch, suggested that drought shifted OM inputs towards anthropogenic sources, thereby overwriting land-use related differences between reservoir branches and homogenizing their environmental conditions. In conclusion, FA variables were useful to evaluate and understand environmental conditions, as well as the effects of early-stage fish farming and drought, and should be considered in impact assessments in tropical lentic ecosystems.
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Affiliation(s)
- I G Boëchat
- Department of Geosciences, Federal University of São João del-Rei, São João del-Rei, Minas Gerais, Brazil.
| | - A Krüger
- Department of Chemical Analytics and Biogeochemistry, Leibniz-Institute for Freshwater Ecology and Inland Fisheries, Berlin, Germany
| | - E M Soares
- Graduate Program in Geography, Federal University of São João del-Rei, São João del-Rei, Minas Gerais, Brazil
| | - C C Figueredo
- Department of Botany, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - A M Contin
- Graduate Program in Geography, Federal University of São João del-Rei, São João del-Rei, Minas Gerais, Brazil
| | - P L Pinheiro
- Graduate Program in Geography, Federal University of São João del-Rei, São João del-Rei, Minas Gerais, Brazil
| | - G H P Abrantes
- Department of Botany, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - F S Cardozo
- Graduate Program in Geography, Federal University of São João del-Rei, São João del-Rei, Minas Gerais, Brazil
| | - B Gücker
- Department of Geosciences, Federal University of São João del-Rei, São João del-Rei, Minas Gerais, Brazil
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9
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Jing M, Lin D, Lin J, Li Q, Yan H, Feng X. Mercury, microcystins and Omega-3 polyunsaturated fatty acids in farmed fish in eutrophic reservoir: Risk and benefit assessment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 270:116047. [PMID: 33246762 DOI: 10.1016/j.envpol.2020.116047] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 10/17/2020] [Accepted: 11/05/2020] [Indexed: 06/12/2023]
Abstract
Fish is an important source of nutritional omega-3 (n-3) polyunsaturated fatty acids, but it also readily accumulates toxic mercury (Hg) and microcystins (MC) in eutrophic aquatic systems. In China, farmed fish was widely consumed, and aquaculture has caused pervasive eutrophication of freshwater lakes, resulting in the increasing accumulation of MC in fish tissue. To assess the risk-benefit of consuming farmed fish, 205 fish samples of 10 primary species were collected from the eutrophic Wujiangdu (WJD) Reservoir, SW China. The contents of Hg, microcystin-RR (MC-RR), microcystin-LR (MC-LR), and polyunsaturated fatty acids (PUFA) in fish were analyzed. The results showed that THg and MeHg concentrations in all fish sampls were well below the safety limit (500 ng/g w.w) established by the Standardization Administration of China, with average values of 22.9 ± 22.8 and 6.0 ± 6.6 ng/g wet weight (w.w.), respectively. Average concentrations of MC-RR and MC-LR were 40 ± 80 and 50 ± 80 ng/g w.w., respectively. MC-RR and MC-LR concentrations in fish were significantly higher in silver carp and black carp than in perch and catfish (p < 0.05). In nutritional terms, average concentrations of n-3 PUFA and the eicosapentaenoic (EPA) + docosahexaenoic acids (DHA) of fish were 2.0 ± 2.5 and 1.4 ± 0.5 mg/g w.w., respectively. The risk-benefit assessment suggests that the n-3 PUFA benefits from consuming all farmed fish species in the WJD Reservoir outweigh the adverse effects of MeHg. However, except for perch, most fish species still pose a high MC-LR exposure risk that created a requirement for fish consumption advisories and monitoring. Consequently, more attention should be paid on the health risk of combined exposure to pollutants by aquatic product consumption.
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Affiliation(s)
- Min Jing
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Dan Lin
- School of Public Health, Guizhou Medical University, Guiyang, 550025, PR China
| | - Jing Lin
- School of Public Health, Guizhou Medical University, Guiyang, 550025, PR China
| | - Qiuhua Li
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550000, PR China
| | - Haiyu Yan
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China.
| | - Xinbin Feng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China
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10
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Sardenne F, Bodin N, Médieu A, Antha M, Arrisol R, Le Grand F, Bideau A, Munaron JM, Le Loc'h F, Chassot E. Benefit-risk associated with the consumption of fish bycatch from tropical tuna fisheries. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 267:115614. [PMID: 33254649 DOI: 10.1016/j.envpol.2020.115614] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/01/2020] [Accepted: 09/06/2020] [Indexed: 06/12/2023]
Abstract
Mercury, omega-3 (docosahexaenoic acid, DHA and eicosapentaenoic acid, EPA) and macronutrients (fat and proteins) were quantified on a wet weight (ww) basis in 20 species of fish taken as bycatch in tropical tuna fisheries. Based on a hazard quotient taking into account mercury and omega-3 contents, a benefit-risk assessment for the consumption of these pelagic species was conducted for three people categories: young children, children and adults. All fish bycatch were found to be an excellent source of proteins (min‒max = 14.4-25.2 g/100 g fillet), had low omega-6/omega-3 ratios (<1, except for silky shark), and had mercury content below the safety limits defined by sanitary agencies. Silky shark and Istiophoridae had the highest mercury contents (min‒max = 0.029-0.317 ppm ww). Omega-3 contents were the lowest in silky shark (0.2 ± 0.2 mg/100 g fillet) and the highest in striped marlin (3.6 ± 3.2 g/100 g fillet). Billfishes (Istiophoridae, including striped marlin), minor tunas (Scombridae), and Carangidae had the highest omega-3 contents (min‒max = 0.68-7.28 g/100 g fillet). The highest hazard quotient values obtained for silky shark and great barracuda reflected a lower nutritional benefit (i.e., low omega-3 source) than risk (i.e., mercury exposure), making them not advisable for consumption. Eight species had low hazard quotients, and among them cottonmouth jack and flat needlefish were found of high health interest (high protein, moderate fat contents, and low omega-6/omega-3 ratio). A daily serving portion of 85-200 g (according to people category) can be recommended for these species. Batfish, and to a lower extent pompano dolphinfish and brassy chub, can also be consumed safely and would provide greater health benefits than risks. These results advocate for a better access of these species to local populations.
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Affiliation(s)
- Fany Sardenne
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzané, France.
| | - Nathalie Bodin
- Seychelles Fishing Authority (SFA), Fishing Port, Victoria, Mahé, Seychelles; Institute for Research and Sustainable Development (IRD), Fishing Port, Victoria, Mahé, Seychelles; Sustainable Ocean Seychelles (SOS), BeauBelle, Mahé, Seychelles
| | - Anaïs Médieu
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzané, France; Institute for Research and Sustainable Development (IRD), Fishing Port, Victoria, Mahé, Seychelles
| | - Marisa Antha
- Seychelles Fishing Authority (SFA), Fishing Port, Victoria, Mahé, Seychelles
| | - Rona Arrisol
- Seychelles Fishing Authority (SFA), Fishing Port, Victoria, Mahé, Seychelles
| | | | - Antoine Bideau
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzané, France
| | | | | | - Emmanuel Chassot
- Seychelles Fishing Authority (SFA), Fishing Port, Victoria, Mahé, Seychelles; Institute for Research and Sustainable Development (IRD), Fishing Port, Victoria, Mahé, Seychelles
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11
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Zhang H, Guo C, Feng H, Shen Y, Wang Y, Zeng T, Song S. Total mercury, methylmercury, and selenium in aquatic products from coastal cities of China: Distribution characteristics and risk assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 739:140034. [PMID: 32758950 DOI: 10.1016/j.scitotenv.2020.140034] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 06/04/2020] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
This study analyzed total mercury (THg), methylmercury (MeHg) and selenium (Se) in 114 aquatic product samples (representing 39 species) from eight coastal cities of China. The THg and MeHg levels in different parts of the same sample species were in the order of muscle ≥ skin/shell > roe, whereas Se levels were much higher in roe. Concentrations of THg, MeHg, and Se in the muscles were between 2.27-154, 0.36-135, and 57.8-1.20 × 103 ng g-1 wet weight (ww), respectively. Although significant differences in analyte concentrations were not observed among cities, they existed among three species; marine fish, freshwater fish, and shellfish. Shellfish had generally lower Hg content (mean: 20.2 ng g-1 ww THg, 6.71 ng g-1 ww MeHg, and 30.9% MeHg/THg ratio); however it had higher Se content (528 ng g-1 ww) than the other types of fish (mean: 33.3 ng g-1 ww THg, 28.2 ng g-1 ww MeHg, and 79.2% MeHg/THg ratio, 257 ng g-1 ww Se). In addition to species, the individual growth and HgSe interaction influenced Hg distribution. Evident correlations were observed between several individual body features and Hg content, and between Se and THg concentrations (p < 0.05). The greater correlation coefficient between two elements for fish indicated stronger HgSe antagonism through HgSe compound formation in fish. Relatively low THg daily intakes (mean 0.013-0.080 μg kg-1 day-1) and MeHg daily intakes (0.006-0.065 μg kg-1 day-1) along with Se:Hg molar ratios >1 and positive HBVSe values suggest that aquatic products from these sites will not pose immediate health problems to consumers. Fish was the dominating contributor for MeHg intake whereas shellfish was the dominating contributor for Se intake. To safeguard against mercury exposure, residents in these areas can appropriately increase shellfish intake (especially bivalves), rather than exclusively consuming marine fish.
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Affiliation(s)
- Haiyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Chenqi Guo
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Hongru Feng
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yanting Shen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yaotian Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China
| | - Tao Zeng
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Shuang Song
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
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12
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Jinadasa KK, Peña-Vázquez E, Bermejo-Barrera P, Moreda-Piñeiro A. New adsorbents based on imprinted polymers and composite nanomaterials for arsenic and mercury screening/speciation: A review. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104886] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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13
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Gladyshev MI, Anishchenko OV, Makhutova ON, Kolmakova OV, Trusova MY, Morgun VN, Gribovskaya IV, Sushchik NN. The benefit-risk analysis of omega-3 polyunsaturated fatty acids and heavy metals in seven smoked fish species from Siberia. J Food Compost Anal 2020. [DOI: 10.1016/j.jfca.2020.103489] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Jing M, Lin D, Wu P, Kainz MJ, Bishop K, Yan H, Wang R, Wang Q, Li Q. Effect of aquaculture on mercury and polyunsaturated fatty acids in fishes from reservoirs in Southwest China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113543. [PMID: 31753634 DOI: 10.1016/j.envpol.2019.113543] [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: 08/26/2019] [Revised: 10/16/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
Aquaculture can affect the polyunsaturated fatty acids (PUFA) and mercury (Hg) in fish by altering their diet. Here, planktivorous (silver carp and bighead carp), omnivorous and carnivorous fish with different dietary strategies were selected from two reservoirs, one with on-going aquaculture (WJD) and another without aquaculture (HF) in Southwest China. We compared the total mercury (THg), methylmercury (MeHg) contents and PUFA profiles of fish and their potential diets in these two reservoirs. THg and MeHg contents in omnivorous and carnivorous fish were lower from the WJD Reservoir, which is related to the lower THg and MeHg contents in the artificial fish food. THg and MeHg contents in silver carp from the WJD Reservoir were lower than those from the HF Reservoir, while they were similar in bighead carps from the two reservoirs. The Hg variation in planktivorous fish were inconsistent with that in plankton. THg contents in phyto- and zooplankton from the HF Reservoir were higher than those from the WJD Reservoir, yet their MeHg contents were similar. Artificial fish food which contained higher total PUFA eicosapentaenoic (EPA; 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3), significantly increased the total PUFA and EPA + DHA contents in carnivorous fish, but had less effect on that in omnivorous fish from the WJD Reservoir. Eutrophication caused by aquaculture reduced total PUFA and EPA + DHA contents of plankton in WJD, yet did not reduce those in planktivorous fish. The impacts of aquaculture on Hg and PUFA accumulated in fish were varied among different fish species, and the mechanism needs further exploration.
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Affiliation(s)
- Min Jing
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Dan Lin
- School of Public Health, Guizhou Medical University, Guiyang 550025, PR China
| | - Pianpian Wu
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Sweden
| | - Martin J Kainz
- WasserCluster - Biologische Station Lunz, Inter-University Center for Aquatic Ecosystem Research, Lunz am See, Austria
| | - Kevin Bishop
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Sweden
| | - Haiyu Yan
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China.
| | - Rui Wang
- College of Environmental Science and Engineering, Tong ji University, Shanghai 20092, PR China
| | - Qing Wang
- Institute of Hydrobiology, Jinan University, Guangzhou 510000, PR China
| | - Qiuhua Li
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province Guizhou Normal University, Guiyang, 550000, PR China
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15
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Jinadasa BKKK, Fowler SW. Critical review of mercury contamination in Sri Lankan fish and aquatic products. MARINE POLLUTION BULLETIN 2019; 149:110526. [PMID: 31543477 DOI: 10.1016/j.marpolbul.2019.110526] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 07/14/2019] [Accepted: 08/16/2019] [Indexed: 06/10/2023]
Abstract
Mercury (Hg) in fish and aquatic products is a potential threat to human health and international trade, and guidelines of international advisory bodies are established for assessing Hg in these foods. As fish are the most consumed animal protein in Sri Lanka, this assessment summarises for the first-time total mercury concentrations in Sri Lankan marine and freshwater fish, invertebrates, aquatic plants, and fisheries products. It reveals that Hg levels in fish and other edible aquatic species are mostly below the published safety limits, except for certain top trophic level fish (swordfish, tuna, marlin). The review also highlights gaps in Sri Lankan Hg assessments such as a total lack of data for methyl‑mercury in these aquatic species and food products. This data compilation and assessment will serve as an initial baseline for comparison with results from future monitoring and research studies in Sri Lanka while adding to the world-wide Hg database.
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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.
| | - Scott W Fowler
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11794-5000, USA
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16
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Gladyshev MI, Sushchik NN. Long-chain Omega-3 Polyunsaturated Fatty Acids in Natural Ecosystems and the Human Diet: Assumptions and Challenges. Biomolecules 2019; 9:biom9090485. [PMID: 31547473 PMCID: PMC6770104 DOI: 10.3390/biom9090485] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 08/28/2019] [Accepted: 09/07/2019] [Indexed: 01/05/2023] Open
Abstract
Over the past three decades, studies of essential biomolecules, long-chain polyunsaturated fatty acids of the omega-3 family (LC-PUFAs), namely eicosapentaenoic acid (20:5n-3, EPA) and docosahexaenoic acid (22:6n-3, DHA), have made considerable progress, resulting in several important assumptions. However, new data, which continue to appear, challenge these assumptions. Based on the current literature, an attempt is made to reconsider the following assumptions: 1. There are algal classes of high and low nutritive quality. 2. EPA and DHA decrease with increasing eutrophication in aquatic ecosystems. 3. Animals need EPA and DHA. 4. Fish are the main food source of EPA and DHA for humans. 5. Culinary treatment decreases EPA and DHA in products. As demonstrated, some of the above assumptions need to be substantially specified and changed.
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Affiliation(s)
- Michail I Gladyshev
- Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, 50/50, Krasnoyarsk 660036, Russia.
- Siberian Federal University, Svobodny av. 79, Krasnoyarsk 660041, Russia.
| | - Nadezhda N Sushchik
- Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, 50/50, Krasnoyarsk 660036, Russia.
- Siberian Federal University, Svobodny av. 79, Krasnoyarsk 660041, Russia.
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17
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Yan H, Li Q, Yuan Z, Jin S, Jing M. Research Progress of Mercury Bioaccumulation in the Aquatic Food Chain, China: A Review. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2019; 102:612-620. [PMID: 31101929 DOI: 10.1007/s00128-019-02629-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 05/06/2019] [Indexed: 06/09/2023]
Abstract
Research on mercury (Hg) in aquatic ecosystems in China has focused mainly on fish, with little research on the base of the food chain and Hg bioaccumulation mechanisms. This paper summarizes research progress pertaining to the characteristics, current status, and trends of Hg accumulation in the aquatic food chain in China, analyzes the effects of human activities on the transmission and accumulation of Hg in aquatic food chains, and assesses their risks to human and ecosystem health. A comparison of fish samples in China between 2000 and 2018 indicates that their total Hg content remains at relatively safe levels. However, because current information is generally insufficient to confirm how anthropogenic activities affect transformation and bioaccumulation in the aqueous environment, Hg isotope studies should be a focus of research on aquatic food webs. Additionally, more attention should be paid to Hg transport and bioaccumulation in the basic food chain by focusing on multi-contaminant joint exposure studies and establishing Hg bio-transport models.
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Affiliation(s)
- Haiyu Yan
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Qiuhua Li
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550001, China.
| | - Zhenhui Yuan
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550001, China
| | - Shuang Jin
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550001, China
- International Joint Research Centre for Aquatic Ecology, Guizhou Normal University, Guiyang, 550001, China
| | - Min Jing
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
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18
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Azad AM, Frantzen S, Bank MS, Nilsen BM, Duinker A, Madsen L, Maage A. Effects of geography and species variation on selenium and mercury molar ratios in Northeast Atlantic marine fish communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 652:1482-1496. [PMID: 30586833 DOI: 10.1016/j.scitotenv.2018.10.405] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 10/26/2018] [Accepted: 10/29/2018] [Indexed: 06/09/2023]
Abstract
Methylmercury (MeHg) is a potent neurotoxin that bioaccumulates in seafood. Co-occurrence of selenium (Se) may affect the bioavailability and toxicity of MeHg in organisms. Here we report the concentrations of total mercury (Hg) and Se in 17 teleost fish species (n = 8459) sampled during 2006-2015 from the North East Atlantic Ocean (NEAO) and evaluate species variation and effects of geography. Mean Hg concentration ranged from 0.04 mg kg-1 ww in Atlantic mackerel (Scomber scombrus) and blue whiting (Micromesistius poutassou) to 0.72 mg kg-1 ww in blue ling (Molva dypterygia). Se concentrations were less variable and ranged from 0.27 mg kg-1 ww in Atlantic cod (Gadus morhua) to 0.56 mg kg-1 ww in redfish (Sebastes spp.). The mean Se:Hg molar ratio ranged from 1.9 in blue ling to 43.3 in mackerel. Pelagic species had the lowest Hg concentrations and the highest Se:Hg ratios, whereas demersal species had the highest Hg concentrations and the lowest Se:Hg ratios. Se and Hg concentrations were positively correlated in 13 of the 17 species. Hg concentrations increased from the North to South in contrast to the Se:Hg molar ratio which exhibited the opposite trend. Fish from fjord and coastal areas had higher concentrations of Hg and lower Se:Hg molar ratios compared to fish sampled offshore. All species had average Se:Hg molar ratios >1 and Hg concentrations were largely below the EU maximum level of 0.5 mg kg-1 ww with few exceptions including the deep water species tusk (Brosme brosme) and blue ling sampled from fjord and coastal habitats. Our results show that two fillet servings of tusk, blue ling or Atlantic halibut (Hippoglossus hippoglossus) exceeded the tolerable weekly intake of MeHg although the surplus Se may possibly ameliorate the toxic effects of MeHg. However, some individuals with selenium deficiencies may exhibit greater sensitivity to MeHg.
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Affiliation(s)
- Atabak M Azad
- Institute of Marine Research, Bergen, Norway; Faculty of Mathematics and Natural Sciences, University of Bergen, Bergen, Norway.
| | | | - Michael S Bank
- Institute of Marine Research, Bergen, Norway; Department of Environmental Conservation, University of Massachusetts Amherst, USA.
| | | | | | - Lise Madsen
- Institute of Marine Research, Bergen, Norway; Department of Biology, University of Copenhagen, Denmark
| | - Amund Maage
- Institute of Marine Research, Bergen, Norway; Faculty of Mathematics and Natural Sciences, University of Bergen, Bergen, Norway
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19
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Jinadasa BKKK, Chathurika GS, Jayaweera CD, Jayasinghe GDTM. Mercury and cadmium in swordfish and yellowfin tuna and health risk assessment for Sri Lankan consumers. FOOD ADDITIVES & CONTAMINANTS PART B-SURVEILLANCE 2018; 12:75-80. [DOI: 10.1080/19393210.2018.1551247] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- B. K. K. K. Jinadasa
- Analytical Chemistry Laboratory (ACL), National Aquatic Resources Research & Development Agency (NARA), Colombo, Sri Lanka
| | - G. S. Chathurika
- Analytical Chemistry Laboratory (ACL), National Aquatic Resources Research & Development Agency (NARA), Colombo, Sri Lanka
| | - C. D. Jayaweera
- Department of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - G. D. T. M. Jayasinghe
- Analytical Chemistry Laboratory (ACL), National Aquatic Resources Research & Development Agency (NARA), Colombo, Sri Lanka
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20
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Benefit-risk ratio of canned pacific saury (Cololabis saira) intake: Essential fatty acids vs. heavy metals. Food Chem Toxicol 2017; 101:8-14. [DOI: 10.1016/j.fct.2016.12.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 12/07/2016] [Accepted: 12/26/2016] [Indexed: 11/15/2022]
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21
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Strandberg U, Palviainen M, Eronen A, Piirainen S, Laurén A, Akkanen J, Kankaala P. Spatial variability of mercury and polyunsaturated fatty acids in the European perch (Perca fluviatilis) - Implications for risk-benefit analyses of fish consumption. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 219:305-314. [PMID: 27814547 DOI: 10.1016/j.envpol.2016.10.050] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 10/17/2016] [Indexed: 06/06/2023]
Abstract
This study evaluated the spatial variability of risks and benefits of consuming fish from humic and clear lakes. Mercury in fish is a potential risk for human health, but risk assessment may be confounded by selenium, which has been suggested to counterbalance mercury toxicity. In addition to the risks, fish are also rich in eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which are known to be beneficial for cardiovascular health and brain cognitive function in humans. We found that the concentrations of EPA + DHA and mercury in European perch (Perca fluviatilis) vary spatially and are connected with lake water chemistry and catchment characteristics. The highest mercury concentrations and the lowest EPA + DHA concentrations were found in perch from humic lakes with high proportion of peatland (30-50%) in the catchment. In addition, the ratio of selenium to mercury in perch muscle was ≥1 suggesting that selenium may counterbalance mercury toxicity. The observed variation in mercury and EPA + DHA content in perch from different lakes indicate that the risks and benefits of fish consumption vary spatially, and are connected with lake water chemistry and catchment characteristics. In general, consumption of perch from humic lakes exposed humans to greater risks (higher concentrations of mercury), but provided less benefits (lower concentrations of EPA + DHA) than consumption of perch from clear lakes.
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Affiliation(s)
- Ursula Strandberg
- University of Eastern Finland, Department of Environmental and Biological Sciences, Joensuu, Finland.
| | - Marjo Palviainen
- University of Helsinki, Department of Forest Sciences, Helsinki, Finland
| | - Aslak Eronen
- University of Eastern Finland, Department of Environmental and Biological Sciences, Joensuu, Finland
| | | | - Ari Laurén
- Natural Resources Institute Finland, Joensuu, Finland
| | - Jarkko Akkanen
- University of Eastern Finland, Department of Environmental and Biological Sciences, Joensuu, Finland
| | - Paula Kankaala
- University of Eastern Finland, Department of Environmental and Biological Sciences, Joensuu, Finland
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22
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Taipale SJ, Vuorio K, Strandberg U, Kahilainen KK, Järvinen M, Hiltunen M, Peltomaa E, Kankaala P. Lake eutrophication and brownification downgrade availability and transfer of essential fatty acids for human consumption. ENVIRONMENT INTERNATIONAL 2016; 96:156-166. [PMID: 27685803 DOI: 10.1016/j.envint.2016.08.018] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Revised: 07/24/2016] [Accepted: 08/22/2016] [Indexed: 05/06/2023]
Abstract
Fish are an important source of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) for birds, mammals and humans. In aquatic food webs, these highly unsaturated fatty acids (HUFA) are essential for many physiological processes and mainly synthetized by distinct phytoplankton taxa. Consumers at different trophic levels obtain essential fatty acids from their diet because they cannot produce these sufficiently de novo. Here, we evaluated how the increase in phosphorus concentration (eutrophication) or terrestrial organic matter inputs (brownification) change EPA and DHA content in the phytoplankton. Then, we evaluated whether these changes can be seen in the EPA and DHA content of piscivorous European perch (Perca fluviatilis), which is a widely distributed species and commonly consumed by humans. Data from 713 lakes showed statistically significant differences in the abundance of EPA- and DHA-synthesizing phytoplankton as well as in the concentrations and content of these essential fatty acids among oligo-mesotrophic, eutrophic and dystrophic lakes. The EPA and DHA content of phytoplankton biomass (mgHUFAg-1) was significantly lower in the eutrophic lakes than in the oligo-mesotrophic or dystrophic lakes. We found a strong significant correlation between the DHA content in the muscle of piscivorous perch and phytoplankton DHA content (r=0.85) as well with the contribution of DHA-synthesizing phytoplankton taxa (r=0.83). Among all DHA-synthesizing phytoplankton this correlation was the strongest with the dinoflagellates (r=0.74) and chrysophytes (r=0.70). Accordingly, the EPA+DHA content of perch muscle decreased with increasing total phosphorus (r2=0.80) and dissolved organic carbon concentration (r2=0.83) in the lakes. Our results suggest that although eutrophication generally increase biomass production across different trophic levels, the high proportion of low-quality primary producers reduce EPA and DHA content in the food web up to predatory fish. Ultimately, it seems that lake eutrophication and brownification decrease the nutritional quality of fish for human consumers.
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Affiliation(s)
- S J Taipale
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland; Lammi Biological Station, University of Helsinki, Pääjärventie 320, 16900 Lammi, Finland; Department of Biological and Environmental Science, University of Jyväskylä, P.O. Box 35 (YA), 40014 Jyväskylä, Finland.
| | - K Vuorio
- Department of Biological and Environmental Science, University of Jyväskylä, P.O. Box 35 (YA), 40014 Jyväskylä, Finland; Finnish Environment Institute (SYKE), P.O. Box 140, FI-00251 Helsinki, Finland
| | - U Strandberg
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland
| | - K K Kahilainen
- Kilpisjärvi Biological Station, University of Helsinki, Käsivarrentie 14622, 99490 Kilpisjärvi, Finland; Department of Environmental Sciences, University of Helsinki, P.O. Box 65, 00014 University of Helsinki, Finland
| | - M Järvinen
- Finnish Environment Institute (SYKE), Jyväskylä Office, Survontie 9A, FI-40500, Finland
| | - M Hiltunen
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland
| | - E Peltomaa
- Lammi Biological Station, University of Helsinki, Pääjärventie 320, 16900 Lammi, Finland; Department of Environmental Sciences, University of Helsinki, P.O. Box 65, 00014 University of Helsinki, Finland
| | - P Kankaala
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland
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Fatty Acid Composition of Tropical Fish Depends on Reservoir Trophic Status and Fish Feeding Habit. Lipids 2016; 51:1193-1206. [DOI: 10.1007/s11745-016-4196-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 08/27/2016] [Indexed: 11/26/2022]
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24
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Poste AE, Muir DCG, Guildford SJ, Hecky RE. Bioaccumulation and biomagnification of mercury in African lakes: the importance of trophic status. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 506-507:126-36. [PMID: 25460947 DOI: 10.1016/j.scitotenv.2014.10.094] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 10/24/2014] [Accepted: 10/26/2014] [Indexed: 05/22/2023]
Abstract
Despite the global prevalence of both mercury (Hg) contamination and anthropogenic eutrophication, relatively little is known about the behavior of Hg in eutrophic and hypereutrophic systems or the effects of lake trophic status on Hg uptake and trophodynamics. In the current study we explore Hg trophodynamics at 8 tropical East African study sites ranging from mesotrophic to hypereutrophic, in order to assess the influence of lake trophic status on Hg uptake and biomagnification. Comprehensive water, plankton and fish samples were collected for analysis of total mercury (THg) and stable carbon and nitrogen isotopic ratios. We found evidence that uptake of THg into phytoplankton tended to be lower in higher productivity systems. THg concentrations in fish were generally low, and THg trophic magnification factors (TMFs; representing the average increase in contaminant concentrations from one trophic level to the next) ranged from 1.9 to 5.6. Furthermore TMFs were significantly lower in hypereutrophic lakes than in meso- and eutrophic lakes, and were negatively related to chlorophyll a concentrations both across our study lakes, and across African lakes for which literature data were available. These observations suggest that THg concentrations were strongly influenced by trophic status, with year-round high phytoplankton and fish growth rates reducing the potential for high THg in fish in these productive tropical lakes.
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Affiliation(s)
- Amanda E Poste
- Norwegian Institute for Water Research, Gaustadalléen 21, 0349 Oslo, Norway; Department of Biology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
| | - Derek C G Muir
- Aquatic Contaminants Research Division, Environment Canada, 867 Lakeshore Drive, Burlington, ON L7R 4A6, Canada
| | - Stephanie J Guildford
- Department of Biology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; Large Lakes Observatory, University of Minnesota Duluth, 2205 East Fifth Street, Duluth, MN 55812, USA
| | - Robert E Hecky
- Department of Biology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; Large Lakes Observatory, University of Minnesota Duluth, 2205 East Fifth Street, Duluth, MN 55812, USA
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