Fates of metal radiotracers added to a whole lake: accumulation in fathead minnow (Pimephales promelas) and lake trout (Salvelinus namaycush)

As part of a study on the distribution of radioactive tracers of heavy metals in lakes, the isotopes selenium-75, mercury-203, caesium-134, iron-59, zinc-65 and cobalt-60 were added simultaneously to the epilimnion of an oligotrophic lake of the Precambrian Shield in Ontario and the accumulation of...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 1990-08, Vol.52 (3), p.277-293
Main Authors: Harrison, S.E. (Manitoba Univ., Winnipeg, Manitoba (Canada). Dept. of Fisheries and Oceans), Klaverkamp, J.F, Hesslein, R.H
Format: Article
Language:English
Subjects:
Applied sciences
Continental surface waters
ELEMENT METALLIQUE
ELEMENTOS METALICOS
Exact sciences and technology
FRESHWATER FISHES
ISOTOPE RADIOACTIF
LAC
LAGOS
LAKES
METALLIC ELEMENTS
Natural water pollution
PECES DE AGUA DULCE
POISSON D'EAU DOUCE
Pollution
POLLUTION DE L'EAU
POLUCION DEL AGUA
RADIOISOTOPES
RADIOISOTOPOS
SALVELINUS
WATER POLLUTION
Water treatment and pollution
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Summary:As part of a study on the distribution of radioactive tracers of heavy metals in lakes, the isotopes selenium-75, mercury-203, caesium-134, iron-59, zinc-65 and cobalt-60 were added simultaneously to the epilimnion of an oligotrophic lake of the Precambrian Shield in Ontario and the accumulation of each isotope in various tissues and organs of fathead minnows (Pimephales promelas) and lake trout (Salvelinus namaycush) were monitored. The results are summarized in a series of graphs. Minnows accumulated higher concentrations of all isotopes than did trout. Only traces of iron-59 were accumulated by fish; this isotope was almost completely adsorbed on particulate matter. Food was the principal source of uptake of the metals. The concentration ratios in both species were higher than those reported from laboratory experiments on aqueous exposure. The concentration ratios for caesium-134 in both species were more than one order of magnitude greater than published data for fish from eutrophic lakes. There are 33 references.
ISSN:0049-6979
1573-2932
DOI:10.1007/BF00229439