Record Display for the EPA National Library Catalog


Main Title Contaminant Trends in Lake Trout ('Salvelinus namaycush') of the Upper Great Lakes.
Author DeVault, D. S. ; Willford, W. A. ; Hesselberg, R. J. ;
CORP Author Fish and Wildlife Service, Ann Arbor, MI. Great Lakes Fishery Lab.
Year Published 1985
Report Number EPA/905/3-85/001; GLFL-639;
Stock Number PB86-121217
Additional Subjects Pesticides ; Trout ; Toxicity ; Water pollution ; Great Lakes ; Lipids ; Concentration(Composition) ; Chlorine organic compounds ; Aromatic compounds ; Dieldrin ; Biphenyl ; Chlorohydrocarbons ; Salvelinus namaycush ; Lake trout ; DDT insecticide ; Polychlorinated biphenyls ; Biphenyl/chloro
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB86-121217 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 30 p.
Contaminant body burdens in lake trout from the Upper Great Lakes have been monitored since 1970 on Lake Michigan and since 1977 and 1978 on Lakes Superior and Huron. Analysis of the Lake Michigan data shows that mean PCB concentrations declined from maximum of 22.91 mg/kg in 1974 to 5.63 in 1982. Mean total DDT concentrations declined from 19.19 mg/kg in 1970 to 2.74 mg/kg in 1982. The decline in both contaminants closely followed first order loss kinetics. If the current declines continue, PCB concentrations will decline to the USFDA tolerance of 2.0 mg/kg in 1988. As this decline is not reflected in other species it will require additional years of monitoring to determine if the decline in dieldrin concentrations between 1979 and 1982 truly represents a declining trend.
"March 1985"