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Orgon TJ, Hafs AW, Isaacson CW, Bowe SE. Spatial and temporal variability of mercury in Upper and Lower Red Lake Walleye. ECOTOXICOLOGY (LONDON, ENGLAND) 2023; 32:811-823. [PMID: 37572181 DOI: 10.1007/s10646-023-02689-w] [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: 08/02/2023] [Indexed: 08/14/2023]
Abstract
Mercury is a global pollutant that is released into our environment by natural and anthropogenic processes resulting in extensive studies of mercury cycling in aquatic ecosystems, and the issuance of human-health-based fish-consumption advisories. We examined total mercury concentrations in Walleye Sander vitreus from Upper and Lower Red Lakes, located in north central Minnesota, between 2019 and 2020. Sampled Walleye (n = 265) ranged from 158 to 610 mm in total length from an age range of young-of-the year to 16 years. Mercury concentrations within the Walleye ranged from 0.030 mg/kg to 0.564 mg/kg (x̄ = 0.179 ± 0.105 mg/kg; x̄ = mean ± sd, all fish-mercury concentrations expressed on wet-weight basis). The best supported model for predicting mercury concentrations in Red Lake Walleye included the independent variables: length, age, sex, and lake basin. This model indicated that there was a significant difference in mercury concentrations between Upper and Lower Red Lake (x̄ = 0.215 ± 0.117 and 0.144 ± 0.077 mg/kg, respectively), and also suggests that individuals who rely on fish for subsistence should target Walleye that are ≤ 400 mm from Lower Red Lake. Observed differences in mercury concentrations could be linked to wetland area influences, fish growth rates, and physicochemical parameters between the two basins. Given that our results illustrated a significant difference in fish-mercury concentrations between basins, future pollutant monitoring efforts should treat Upper and Lower Red Lake as separate lakes and not assume that data from one basin can apply to the other.
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Affiliation(s)
- Tyler J Orgon
- Department of Natural Resources, Water Resources Program, 15761 High School Drive, Red Lake, MN, 56671, USA.
| | - Andrew W Hafs
- Bemidji State University, 1500 Birchmont Drive NE, Bemidji, MN, 56601, USA
| | - Carl W Isaacson
- Bemidji State University, 1500 Birchmont Drive NE, Bemidji, MN, 56601, USA
| | - Shane E Bowe
- Department of Natural Resources, Water Resources Program, 15761 High School Drive, Red Lake, MN, 56671, USA
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Strandberg U, Hiltunen M, Syväranta J, Levi EE, Davidson TA, Jeppesen E, Brett MT. Combined effects of eutrophication and warming on polyunsaturated fatty acids in complex phytoplankton communities: A mesocosm experiment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 843:157001. [PMID: 35772541 DOI: 10.1016/j.scitotenv.2022.157001] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
Climate change and eutrophication are among the main stressors of shallow freshwater ecosystems, and their effects on phytoplankton community structure and primary production have been studied extensively. However, their combined effects on the algal production of polyunsaturated fatty acids (PUFA), specifically, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are currently unresolved. Moreover, the proximate reasons for changes in phytoplankton EPA and DHA concentrations are unclear, i.e., the relative importance of ecological (changes in the community composition) vs. ecophysiological (within taxa changes in EPA and DHA levels) factors. We investigated the responses of phytoplankton EPA and DHA concentrations to warming (IPCC climate scenario) and nutrient additions in mesocosms which had been run continuously at varying temperature and nutrient levels for 15 years prior to this study. Nutrient treatment had a significant effect on phytoplankton EPA and DHA concentrations and about 59 % of the variation in EPA and DHA concentrations could be explained by changes in the phytoplankton community structure. Increased biomass of diatoms corresponded with high EPA and DHA concentrations, while cyanobacteria/chlorophyte dominated mesocosm had low EPA and DHA concentrations. Warming had only a marginal effect on the EPA and DHA concentrations in these mesocosms. However, a significant interaction was observed with warming and N:P ratio. Our findings indicate that direct nutrient/temperature effects on algal physiology and PUFA metabolism were negligible and the changes in EPA and DHA concentrations were mostly related to the phytoplankton community structure and biomass. These results also imply that in shallow temperate lakes eutrophication, leading to increased dominance of cyanobacteria, will probably be a greater threat to phytoplankton EPA and DHA production than warming. EPA and DHA are nutritionally important for upper trophic level consumers and decreased production may impair secondary production.
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Affiliation(s)
- Ursula Strandberg
- University of Eastern Finland, Department of Environmental and Biological Sciences, Joensuu, Finland.
| | - Minna Hiltunen
- University of Jyväskylä, Department of Biological and Environmental Science, Jyväskylä, Finland
| | - Jari Syväranta
- University of Eastern Finland, Department of Environmental and Biological Sciences, Joensuu, Finland
| | - Eti E Levi
- Aarhus University, Department of Ecoscience - Lake Ecology, Silkeborg, Denmark
| | - Thomas A Davidson
- Aarhus University, Department of Ecoscience - Lake Ecology, Silkeborg, Denmark
| | - Erik Jeppesen
- Aarhus University, Department of Ecoscience - Lake Ecology, Silkeborg, Denmark; Sino-Danish Centre for Education and Research, Beijing 100049, China; Limnology Laboratory, Department of Biological Sciences and Centre for Ecosystem Research and Implementation, Middle East Technical University, Ankara 06800, Turkey; Institute of Marine Sciences, Middle East Technical University, Erdemli, Mersin 33731, Turkey
| | - Michael T Brett
- University of Washington, Civil and Environmental Engineering, Seattle, USA
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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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Laird MJ, Henao JJA, Reyes ES, Stark KD, Low G, Swanson HK, Laird BD. Mercury and omega-3 fatty acid profiles in freshwater fish of the Dehcho Region, Northwest Territories: Informing risk benefit assessments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 637-638:1508-1517. [PMID: 29801244 DOI: 10.1016/j.scitotenv.2018.04.381] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 04/25/2018] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
Traditional foods have significant nutritional, sociocultural and economic value in subarctic First Nations communities of the Northwest Territories, and play a crucial role in promoting cultural continuity and sovereignty. Omega-3 polyunsaturated fatty acids (N-3 PUFAs), including eicosapentaenoic (EPA) and docosahexaenoic acid (DHA), carry significant benefits for neurocognitive development and cardiovascular health. However, the health risks posed by methylmercury may serve to undermine the benefits of fish consumption in Northern Indigenous communities. The objective of this study was to characterize profiles for mercury (Hg) and fatty acids in fish species harvested across lakes of the Dehcho Region, in the Mackenzie Valley of the Northwest Territories, to better understand the risks and benefits associated with traditional foods. Hg levels increased with trophic position, with the highest levels found in Burbot, Lake Trout, Walleye, and Northern Pike. Lake Trout, along with planktivorous species including Lake Whitefish, Cisco, and Sucker, demonstrated higher N-3 PUFAs than other species. Negative associations were observed between Hg and N-3 PUFAs in Lake Trout, Northern Pike, Walleye and Burbot. Further stratifying these relationships revealed significant interactions by lake. Significant differences observed in fatty acid and Hg profiles across lakes underscore the importance of considering both species- and lake-specific findings. This growing dataset of freshwater fish of the Dehcho will inform future efforts to characterize human Hg exposure profiles using probabilistic dose reconstruction models.
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Affiliation(s)
- Matthew J Laird
- School of Public Health and Health Systems, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada
| | - Juan J Aristizabal Henao
- Department of Kinesiology, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada
| | - Ellen S Reyes
- School of Public Health and Health Systems, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada
| | - Ken D Stark
- Department of Kinesiology, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada
| | - George Low
- Dehcho Aboriginal Aquatic Resources & Oceans Management, 13 Riverview Drive, Hay River, NT, X0E 0R7, Canada
| | - Heidi K Swanson
- Department of Biology, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada
| | - Brian D Laird
- School of Public Health and Health Systems, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada.
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Portuguese preschool children: Benefit (EPA+DHA and Se) and risk (MeHg) assessment through the consumption of selected fish species. Food Chem Toxicol 2018; 115:306-314. [PMID: 29567409 DOI: 10.1016/j.fct.2018.03.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 02/27/2018] [Accepted: 03/17/2018] [Indexed: 12/11/2022]
Abstract
This study aimed to assess the risk-benefit balance associated to fish consumption by Portuguese preschool children. For this purpose, databases (from IPMA and literature) were mined and mathematically processed by a model based on the Extreme Value Theory assuming consumption scenarios. Eicosapentaenoic (EPA) and docosahexaenoic acid (DHA) and selenium (Se) and methylmercury (MeHg) were selected as critical components of fish, given their health impact and significant contents in some fish species. Assessment also took into account that Se may protect against MeHg toxicity. With exception of blue shark, Se Health Benefit Value (Se-HBV), was always positive (ranging between 3.3 and 14.9) and Se:MeHg ratio was always higher than one (3.8 to 32.3). It was also estimated that the deleterious effects of MeHg on children IQ were offset by the beneficial impact of EPA+DHA in fish except for grilled black scabbardfish consumed every day. Blue shark, regardless of the culinary treatment, yielded very high probabilities of exceeding MeHg TWI (higher than 84 % with a single weekly meal), thus raising serious concerns. EPA+DHA benefits were high in salmon regardless of culinary treatment (> 84 %). Fish consumption by children is advisable with exception of blue shark and boiled and grilled tuna.
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