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Biomagnification of Mercury in Fish from Two Gold Mining-Impacted Tropical Marshes in Northern Colombia.

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  • Additional Information
    • Source:
      Publisher: Springer-Verlag Country of Publication: United States NLM ID: 0357245 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1432-0703 (Electronic) Linking ISSN: 00904341 NLM ISO Abbreviation: Arch Environ Contam Toxicol Subsets: MEDLINE
    • Publication Information:
      Original Publication: New York, Springer-Verlag.
    • Subject Terms:
      Fishes* ; Food Chain*; Mercury/*pharmacokinetics ; Muscle, Skeletal/*chemistry ; Water Pollutants, Chemical/*pharmacokinetics; Animals ; Carbon Isotopes/analysis ; Colombia ; Environmental Exposure ; Gold ; Humans ; Mercury/analysis ; Mining ; Nitrogen Isotopes/analysis ; Rain ; Seasons ; Tropical Climate ; Water Pollutants, Chemical/analysis ; Wetlands
    • Abstract:
      Total mercury concentrations (T-Hg) and stable isotope ratios (δ 15 N and δ 13 C) were analyzed in the muscle of fish, collected at two marshes impacted by gold mining in Northern Colombia, to evaluate the seasonal and spatial behavior of these variables and mercury biomagnification based on their relationship with δ 15 N ratios in the fish. There was not significant (p > 0.05) seasonal differences (dry and rainy season) in δ 15 N and δ 13 C values in none marsh, suggesting that these fish species keep a similar feed pattern within each marsh along the year. However, there were significant differences (p < 0.05) between marshes in δ 15 N, δ 13 C, and T-Hg, as well as significant seasonal differences (p < 0.05) in T-Hg values for some species, suggesting the possible influence of factors, such as differences in length of food chains between marshes and different degree of anthropogenic impact in relation to human settlements, farmland, livestock (higher in Ayapel marsh), and gold mining activity (higher in La Raya marsh). Correlations analysis showed significant (p < 0.05) relationships between T-Hg concentrations and δ 15 N values, as well as trophic level, evidencing a T-Hg biomagnification process in the fish food chain from both marshes and consequently a potential health risk for human riverside inhabitants who eat these fish.
    • Grant Information:
      Grant 223-2010 Administrative Department of Science, Technology and Innovation of Colombia COLCIENCIAS
    • Accession Number:
      0 (Carbon Isotopes)
      0 (Nitrogen Isotopes)
      0 (Water Pollutants, Chemical)
      7440-57-5 (Gold)
      FXS1BY2PGL (Mercury)
    • Publication Date:
      Date Created: 20171019 Date Completed: 20180423 Latest Revision: 20181202
    • Publication Date:
      20240105
    • Accession Number:
      10.1007/s00244-017-0459-9
    • Accession Number:
      29043389