The role of water ventilation and sediment ingestion on the uptake of hexachlorobenzene by gizzard shad (Dorosoma cepedianum)
- Nicholls State Univ., Thibodaux, LA (United States). Dept. of Biological Sciences
- Miami Univ., Oxford, OH (United States). Dept. of Zoology
The objective of this study was to determine whether sediment ingestion of water ventilation was the primary route for uptake of hexachlorobenzene (HCB) in the detritivorous fish, gizzard shad (Dorosoma cepedianum). Twenty nonligated and 30 esophagus-ligated fish were exposed to sediments spiked with 1 {micro}g/g HCB for 29 d. The nonligated fish roiled the water as they fed, forcing the ligated fish to ventilate turbid water. Fish were collected 7, 14, 22, and 29 d after initiation of the experiment. Detectable levels of HCB were found in all ligated and nonligated fish, although the concentration of HCB in the ligated fish only ranged from 14 to 33% of that found in the nonligated fish. Thus, ingestion of contaminated sediments is a significant source of HCB for gizzard shad.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 474295
- Journal Information:
- Environmental Toxicology and Chemistry, Journal Name: Environmental Toxicology and Chemistry Journal Issue: 10 Vol. 15; ISSN 0730-7268; ISSN ETOCDK
- Country of Publication:
- United States
- Language:
- English
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