Heavy metal concentrations were determined for livers and muscle tissue of fish taken from 68 lakes and 2 rivers in British Columbia. Determinations of copper, lead and zinc were made primarily for biogeochemical surveys by the Department of Geology, University of British Columbia, whereby fish livers were examined as indicators of mineralization. Molybdenum analyses were attempted from these fish, but sample size proved inadequate. Mercury determinations were made for livers and muscle tissue from several lakes and one river in regions of suspected contamination. The analyses are of interest in providing a baseline or "normal" range of heavy metal concentrations in fish from those lakes examined, to which future environmental contamination involving these metals can be compared. A review of the literature of both lethal and sublethal toxicity effects appears in the discussion.
Peterson, G.R., Warren, H.V.; Delavault, R.E.; Fletcher, K.. 1970. Heavy Metal Content of Some Fresh Water Fishes in British Columbia. Fish and Wildlife Branch. Fisheries Technical Circular. FTC2