Mercury accumulation, biomagnification, and relationships to δ13C, δ15N and δ34S of fishes and marine mammals in a coastal Arctic marine food web.
| Title: | Mercury accumulation, biomagnification, and relationships to δ13C, δ15N and δ34S of fishes and marine mammals in a coastal Arctic marine food web. |
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| Authors: | Yurkowski DJ; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Department of Biological Science, University of Manitoba, Winnipeg, Manitoba, Canada. Electronic address: David.yurkowski@dfo-mpo.gc.ca.; McCulloch E; Department of Natural Resource Sciences, McGill University, Ste. Anne de Bellevue, Quebec, Canada.; Ogloff WR; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Integrative Biology, University of Windsor, Windsor, Ontario, Canada.; Johnson KF; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada.; Amiraux R; Centre for Earth Observation Science, Department of Environment and Geography, University of Manitoba, Winnipeg, Manitoba, Canada.; Basu N; Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Canada.; Elliott KH; Department of Natural Resource Sciences, McGill University, Ste. Anne de Bellevue, Quebec, Canada.; Fisk AT; School of the Environment, University of Windsor, Windsor, Ontario, Canada.; Ferguson SH; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Department of Biological Science, University of Manitoba, Winnipeg, Manitoba, Canada.; Harris LN; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada.; Hedges KJ; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada.; Jacobs K; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada.; Loewen TN; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada.; Matthews CJD; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Department of Biological Science, University of Manitoba, Winnipeg, Manitoba, Canada.; Mundy CJ; Centre for Earth Observation Science, Department of Environment and Geography, University of Manitoba, Winnipeg, Manitoba, Canada.; Niemi A; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada.; Rosenberg B; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada.; Watt CA; Arctic and Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Department of Biological Science, University of Manitoba, Winnipeg, Manitoba, Canada.; McKinney MA; Department of Natural Resource Sciences, McGill University, Ste. Anne de Bellevue, Quebec, Canada. |
| Source: | Marine pollution bulletin [Mar Pollut Bull] 2023 Aug; Vol. 193, pp. 115233. Date of Electronic Publication: 2023 Jul 06. |
| Publication Type: | Journal Article |
| Language: | English |
| Journal Info: | Publisher: Elsevier Country of Publication: England NLM ID: 0260231 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-3363 (Electronic) Linking ISSN: 0025326X NLM ISO Abbreviation: Mar Pollut Bull Subsets: MEDLINE |
| Imprint Name(s): | Publication: 2003- : Oxford : Elsevier; Original Publication: London, Macmillan. |
| MeSH Terms: | Mercury*/analysis ; Water Pollutants, Chemical*/analysis ; Caniformia* ; Beluga Whale*; Animals ; Food Chain ; Bioaccumulation ; Environmental Monitoring ; Fishes ; Cetacea |
| Abstract: | Combining mercury and stable isotope data sets of consumers facilitates the quantification of whether contaminant variation in predators is due to diet, habitat use and/or environmental factors. We investigated inter-species variation in total Hg (THg) concentrations, trophic magnification slope between δ15N and THg, and relationships of THg with δ13C and δ34S in 15 fish and four marine mammal species (249 individuals in total) in coastal Arctic waters. Median THg concentration in muscle varied between species ranging from 0.08 ± 0.04 μg g-1 dw in capelin to 3.10 ± 0.80 μg g-1 dw in beluga whales. Both δ15N (r2 = 0.26) and δ34S (r2 = 0.19) best explained variation in log-THg across consumers. Higher THg concentrations occurred in higher trophic level species that consumed more pelagic-associated prey than consumers that rely on the benthic microbial-based food web. Our study illustrates the importance of using a multi-isotopic approach that includes δ34S when investigating trophic Hg dynamics in coastal marine systems.; (Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.) |
| Competing Interests: | Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. |
| Contributed Indexing: | Keywords: Coastal food web; Contaminants; Habitat; Stable isotopes; Sulfur; Trophic magnification slope; Trophic transfer |
| Substance Nomenclature: | FXS1BY2PGL (Mercury); 0 (Water Pollutants, Chemical) |
| Entry Date(s): | Date Created: 20230708 Date Completed: 20231023 Latest Revision: 20231023 |
| Update Code: | 20260130 |
| DOI: | 10.1016/j.marpolbul.2023.115233 |
| PMID: | 37421916 |
| Database: | MEDLINE |
Journal Article