Accumulation and tissue distribtion of polychlorinated biphenyls (PCBS) in early life stages of the striped bass, Morone saxatilis
Accumulation and tissue distribution of the PCB mixture, Aroclor 1254, in larval and young-of-year striped bass was studied following simulated environmental and dietary exposures. Fish exposed to /sup 14/C-Aroclor 1254 (/sup 14/C-PCB) in water (larvae and young) and sorbed to suspended particles and sediments (larvae) in static systems for periods up to 48 hours accumulated wholebody PCB burdens within 1 hour. Accumulation rates were linear during the first 24 hours. Larvae exposed to /sup 14/C-PCB sorbed to sediment accumulated PCB at a slow, linear rate. All but the least polar component of the /sup 14/C-PCB were accumulated, Continual desorption of sediment-bound PCB and maintenance of solubility equilibrium with the water was indicated. Greater than 98% of the /sup 14/C-PCB was still in the sediment after 48 hours. Body burdens were accumulated in young fish exposed to 0.11 ..mu..g I-/sup 114/C-PCB in water. PCB was distributed to the gills, liver, gastrointestinal tract, muscle and remaining carcass within one hour; peak concentrations were reached in all tissues except carcass after 24 hours. The linear relationship (C/sub fish/ = -0.70 + 11.65 C/sub water/ r/sup 2/ = 0.95 between initial PCB concentration in water and accumulated PCB in fish in each environment suggested that accumulation resulted from equilibrium partitioning between water and fish; the dominant route of PCB uptake was via the gills. Estimated ventilation volumes of larval fish indicated that accumulated PCB burdens likely resulted from diffusion across gill surfaces as PCB-laden water was passed over the gills.
- OSTI ID:
- 5546267
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
AROMATICS
BIOLOGICAL ACCUMULATION
BODY
BODY BURDEN
CARBON 14 COMPOUNDS
CHLORINATED AROMATIC HYDROCARBONS
FISHES
HALOGENATED AROMATIC HYDROCARBONS
HYDROGEN COMPOUNDS
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LARVAE
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
SEDIMENTS
TISSUES
TRACER TECHNIQUES
UPTAKE
VERTEBRATES
WATER