The role of water ventilation and sediment ingestion in the uptake of benzo[a]pyrene in gizzard shad (Dorosoma cepedianum)

Journal Article · Tue Oct 01 04:00:00 EDT 1996 · Environmental Toxicology and Chemistry

DOI:https://doi.org/10.1002/etc.5620151015· OSTI ID:474294

Kolok, A S ^[1]; Huckins, J N; Petty, J D ^[2]; Oris, J T ^[3]

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1. Nicholls State Univ., Thibodaux, LA (United States). Dept. of Biological Sciences
2. National Biological Service, Columbia, MO (United States). Midwest Science Center
3. Miami Univ., Oxford, OH (United States). Dept. of Zoology

The objective of this study was to determine whether sediment ingestion or water ventilation was the primary route of uptake for benzo[a]pyrene (BaP) in the gizzard shad (Dorosoma cepedianum), a detritivorous fish. Two experiments were conducted in which fish were exposed to sediments spiked with 1 {micro}g/g BaP. In the first experiment, fish were prevented from feeding by esophagus ligation. In the second experiment, 20 nonligated fish and 30 ligated fish were added to the aquarium. The nonligated fish roiled the water as they fed. Fish were collected 4, 8, 15, and 22 d after the experiments began. Gizzard shad metabolize BaP; therefore, the concentrations of BaP equivalents (parent BaP plus metabolite) were determined. Concentrations of BaP equivalents were significantly greater in the ligated fish in experiment 2 relative to those in experiment 1. In contrast, the concentration of BaP equivalents in the ligated fish in experiment 2 was not significantly different than that in the nonligated fish. The results suggest that ventilation of turbid water may be a significant source of BaP for gizzard shad. Sediment ingestion, however, does not appear to significantly influence the total body concentration of BaP equivalents in gizzard shad.

• Sponsoring Organization: USDOE
• OSTI ID: 474294
• Journal Information: Environmental Toxicology and Chemistry, Journal Name: Environmental Toxicology and Chemistry Journal Issue: 10 Vol. 15; ISSN ETOCDK; ISSN 0730-7268
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
56 BIOLOGY AND MEDICINE
APPLIED STUDIES
BENZOPYRENE
BIODEGRADATION
BIOLOGICAL ACCUMULATION
BIOLOGICAL INDICATORS
FISHES
METABOLISM
WATER POLLUTION