Metals in fish scales collected in Lake Opeongo, Canada, from 1939 to 1979
- Dept. of Fisheries and Oceans, Burlington, Ontario (Canada)
Time series (1939-1979) of metal concentrations in historical collections of scales from lake trout Salvelinus namaycush and smallmouth bass Micropterus dolomieui from Lake Opeongo, Canada, were compared with temporal trends in metal concentration profiles in core samples of profundal lake sediment. There was no trend for Zn in scales. Elevated Cu and Hg concentrations occurred early in the study period in both species. Elevated Cd was found in the earliest year in smallmouth bass scales. Temporal trends in Hg (and possibly Cd) in smallmouth bass scales probably were attributable to differences in fish weight among years. The data did not support the hypothesis that temporal trends in metal loadings entering lakes are reflected by fish tissue concentrations.
- OSTI ID:
- 5760486
- Journal Information:
- Transactions of the American Fisheries Society; (USA), Journal Name: Transactions of the American Fisheries Society; (USA) Vol. 118:3; ISSN 0002-8487; ISSN TAFSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Heavy metal accumulation in sediment and freshwater fish in U.S. Arctic lakes
Physiological, toxicological, and population responses of smallmouth bass to acidification. Lake Acidification and Fisheries Project
Related Subjects
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
551000* -- Physiological Systems
59 BASIC BIOLOGICAL SCIENCES
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL ACCUMULATION
CADMIUM
CANADA
COPPER
DISTRIBUTION
ELEMENTS
FISHES
HISTORICAL ASPECTS
MERCURY
METALS
NORTH AMERICA
TISSUE DISTRIBUTION
TRANSITION ELEMENTS
TROUT
VERTEBRATES
ZINC