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Accumulation of PCBs by lake trout (Salvelinus namaycush): an individual-based model approach

Canadian Journal of Fisheries and Aquatic Sciences

By:
, , ,
DOI: 10.1139/f93-012

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Abstract

To explain the variation in growth and in concentration of polychlorinated biphenyls (PCBs) among individual fish, an individual-based model (IBM) was applied to the lake trout (Salvelinus namaycush) population in Lake Michigan. The IBM accurately represented the variation in growth exhibited by the different age classes of lake trout. Uncertainty analysis of the IBM revealed that mean PCB concentration for the lake trout population was most sensitive to PCB concentration in their prey. The variability in PCB concentration among lake trout individuals was not adequately explained by the IBM, unless variation in prey fish PCBs was included in the model. To accomplish this, the simulated lake trout population was divided into subsets subjected to different levels of PCB concentration in the prey fish. Thus, model results indicated that variability in prey fish PCB concentration was an important component of the variation in PCB concnetration observed among individual lake trout comprising the Lake Michigan population.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Accumulation of PCBs by lake trout (Salvelinus namaycush): an individual-based model approach
Series title:
Canadian Journal of Fisheries and Aquatic Sciences
DOI:
10.1139/f93-012
Volume
50
Issue:
1
Year Published:
1993
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
13 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Canadian Journal of Fisheries and Aquatic Sciences
First page:
97
Last page:
109
Number of Pages:
13