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

Environmental Toxicology and Chemistry
By: , , , and 
https://doi.org/10.1002/etc.5620151015

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Abstract

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 μg/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. Our 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.

Publication type Article
Publication Subtype Journal Article
Title The role of water ventilation and sediment ingestion in the uptake of benzo[A]pyrene in gizzard shad (Dorosoma cepedianum)
Series title Environmental Toxicology and Chemistry
DOI 10.1002/etc.5620151015
Volume 15
Issue 10
Year Published 1996
Language English
Publisher Wiley
Contributing office(s) Columbia Environmental Research Center
Description 8 p.
First page 1752
Last page 1759
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