SS4.03 Factors Controlling the Bioavailability and Bioaccumulation of Inorganic and Organic Chemicals into Aquatic Food Chains
Date: Friday, June 14, 2002
Time: 11:00:00 AM
Location: Carson B
 
SecorDH, Chesapeake Biological Laboratory, Solomons, USA, secor@cbl.umces.edu
Baker, J, E, Chesapeake Biological Laboratory, Solomons, USA, baker@cbl.umces.edu
 
PCBS IN HUDSON RIVER STRIPED BASS: HABITAT ASSOCIATIONS REVEALED BY GEOCHEMICAL TRACERS IN OTOLITHS
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Within the Hudson River Estuary, the 25-year ban on Hudson River striped bass harvests due to high PCB levels has contributed to near-extinction of commercial fishing. Striped bass demonstrate plasticity in migration patterns that affect PCB body burdens. Using geochemical tracers in otoliths, we have classified the Hudson River population into lifetime migration patterns as freshwater, brackish water, and marine migratory groups. These lifetime migratory groups are termed contingents. Contingent structure was a strong predictor of PCB congener concentrations and patterns in Hudson River striped bass, and therefore has important implications in interpreting PCB data from monitoring programs. Contingent structure also provides an alternative approach to manage around the problem of fisheries x pollution interactions.