EcoHealth

, Volume 9, Issue 2, pp 171–182

Selenium:Mercury Molar Ratios in Freshwater Fish from Tennessee: Individual, Species, and Geographical Variations have Implications for Management

Authors

    • Division of Life SciencesRutgers University
    • Environmental and Occupational Health Sciences Institute, and Consortium for Risk Evaluation with Stakeholder ParticipationRutgers University
    • Center for Environmental Exposure and Disease
  • Michael Gochfeld
    • Environmental and Occupational Health Sciences Institute, and Consortium for Risk Evaluation with Stakeholder ParticipationRutgers University
    • Environmental and Occupational MedicineUMDNJ-Robert Wood Johnson Medical School
    • Center for Environmental Exposure and Disease
  • C. Jeitner
    • Environmental and Occupational Health Sciences Institute, and Consortium for Risk Evaluation with Stakeholder ParticipationRutgers University
  • M. Donio
    • Environmental and Occupational Health Sciences Institute, and Consortium for Risk Evaluation with Stakeholder ParticipationRutgers University
  • T. Pittfield
    • Environmental and Occupational Health Sciences Institute, and Consortium for Risk Evaluation with Stakeholder ParticipationRutgers University
Original Contribution

DOI: 10.1007/s10393-012-0761-y

Cite this article as:
Burger, J., Gochfeld, M., Jeitner, C. et al. EcoHealth (2012) 9: 171. doi:10.1007/s10393-012-0761-y

Abstract

Vertebrates, including humans, can experience adverse effects from mercury consumed in fish. Humans often prefer large predatory fish that bioaccumulate high mercury levels. Recent attention has focused on the role of selenium countering mercury toxicity, but there is little research on the selenium:mercury molar ratios in freshwater fish. We examine selenium:mercury molar ratios in freshwater fish from Tennessee at Poplar Creek which receives ongoing inputs of mercury from the Department of Energy’s Oak Ridge Y-12 facility. Our objective was to determine variation of the ratios within species that might affect the protectiveness of selenium against mercury toxicity. Within species, the ratio was correlated significantly and positively with fish length only for two species. There was great individual variation in the selenium:mercury molar ratio within each species, except striped bass. The lack of a clear relationship between the selenium:mercury molar ratio and fish length, and the intraspecific variation, suggests that it would be difficult to use the molar ratio in predicting either the risk from mercury toxicity or in devising consumption advisories.

Keywords

mercuryseleniummolar ratiosfishinterspecific variabilityrisk management

Copyright information

© International Association for Ecology and Health 2012