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Individual-based model for dieldrin contamination in lake trout

January 1, 1993

An individual-based model (IBM) was applied to dieldrin contamination in the lake trout (Salvelinus namaycush) population of Lake Michigan in order to determine if a model structure originally developed for contamination by polychlorinated biphenyls (PCBs) in Lake Michigan lake trout would also apply to dieldrin contamination. Many different congeners constitute PCBs, whereas dieldrin is a single chemical compound. The model accurately accounted for the variation in dieldrin concentrations exhibited within the Lake Michigan lake trout population. The degree of variability included in dieldrin concentrations of the prey fish was similar to that used for modeling total PCBs. These results supported the argument that any heterogeneity in PCB congener distribution in Lake Michigan contributed relatively little to the observed variability in lake trout total PCB concentrations. Furthermore, these results indicate that the IBM has potential to be applicable to a variety of organochlorine contaminants. The IBM should prove useful for risk assessment of contaminants in fish.

Publication Year 1993
Title Individual-based model for dieldrin contamination in lake trout
DOI 10.1007/BF01061092
Authors Charles P. Madenjian, Stephen R. Carpenter, George E. Noguchi
Publication Type Article
Publication Subtype Journal Article
Series Title Archives of Environmental Contamination and Toxicology
Index ID 1000792
Record Source USGS Publications Warehouse
USGS Organization Great Lakes Science Center