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> Fish Netters:
>
> Some help please. I am interested in the potential of selenium to
> reduce the uptake and/or toxicity of mercury to fish. I know very little
> about this element. Is there a selenium expert out there that could tell me:
>
> What is the normal concentration range of selenium in marine versus fresh
> waters?
> What is the normal concentration range of selenium in tissues from marine
> and freshwater fish?
> Is the chemical form of selenium in marine and freshwater similar? If not,
> how do they differ?
>
> Thanks in advance for any information.
>
> Terry Haines
>
> ****************************************************************************
> *Dr. Terry A. Haines (as of 1 Oct: U.S. Geological Survey, *
> *National Biological Service Biological Resources Division)*
> *University of Maine email: [log in to unmask] *
> *5751 Murray Hall voice: 207-581-2578 *
> *Orono, ME 04469-5751 USA fax: 207-581-2537 *
> ****************************************************************************
>
I can't answer your specific questions, but I remember there were some
papers published (early 80s or late 70s) showing that selenium antagonized
the effects of Hg in fish. I also remember that selenite and selenate etc
have VERY different toxicities - the form of the chemical is critical.
This had probably not been terribly helpful, but....
1880's: "There's lots of good fish in the sea" W.S. Gilbert
1990's: Many fish stocks depleted due to overfishing, habitat loss,
and pollution. \ \
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Judith S. Weis Department of Biological Sciences
Rutgers Univ. Newark NJ 07102 [log in to unmask]
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