Passage of metals to freshwater fish from their food

Following work showing that Cr, Cu, Mn, Fe, Pb and Zn could be concentrated by tubificid worms after ingesting metal-enriched heterotrophic bacteria, experiments were carried out in which fish, fed these worms, showed increased metal levels in their tissues after four days. Only Pb was found in incr...

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Bibliographic Details
Published in:Water research (Oxford) 1978, Vol.12 (6), p.395-398
Main Authors: Patrick, F.M., Loutit, M.W.
Format: Article
Language:English
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Summary:Following work showing that Cr, Cu, Mn, Fe, Pb and Zn could be concentrated by tubificid worms after ingesting metal-enriched heterotrophic bacteria, experiments were carried out in which fish, fed these worms, showed increased metal levels in their tissues after four days. Only Pb was found in increased concentrations after a shorter period of two days. Both young and older fish were used in the experiments, and the results indicate that increased levels of most metals in the fish reflect the concentrations of the metals in their food if the fish are exposed to the food for longer than two to four days, and that the age of the fish has an effect on their final metal concentrations.
ISSN:0043-1354
1879-2448
DOI:10.1016/0043-1354(78)90106-9