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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Roark, Shaun A. Giesy, John P. Chang, Hong Patterson, William P. Jones, Paul D. Holem, Ryan R. Khim, Jong Seong Kay, Denise P. Wan, Yi Newsted, John L. |
| Spatial Coverage | Michigan |
| Description | Author Affiliation: Wan Y ( Department of Veterinary Biomedical Sciences and Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5B3. yi.wan@usask.ca) |
| Abstract | Characterizing biological factors associated with species-specific accumulation of contaminants is one of the major focuses in ecotoxicology and environmental chemistry studies. In this study, polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), and non- and mono-ortho-substituted polychlorinated biphenyl (PCB) congeners were analyzed in various fish species from the Tittabawassee and Saginaw Rivers (12 fish species; n=314 individuals), Michigan, USA. Due to their migratory habits, greater delta(13)C stable isotope values were found in walleye and white sucker among 12 fish species. Meanwhile, the delta(15)N values indicated that the trophic status was least in carp and greatest in largemouth bass. The greatest total concentrations of dioxins were found in fishes with the lowest trophic status (carp (n=50) followed by channel catfish (n=49)), and concentrations of SigmaPCDD/Fs (20-440pg/g ww (wet weight)), SigmaPCBs (16-690ng/g ww), and TEQs (6.8-350pg/g ww) in carp were also greater than the least mean concentrations in other fishes. Contributions of various biological factors to the species accumulation were assessed. Body weight and lipid content were found to be the most significant factors influencing accumulation of SigmaPCDD/Fs. Lipid content and trophic level seemed to be dominant factors determining accumulation of SigmaPCB and TEQs, but negative correlations between trophic status and concentrations of SigmaPCBs and TEQs were observed possibly due to the great concentrations in benthivorous fishes such as carp occupying lower trophic levels. These factors can be used to predict the contaminant levels of dioxins and health risks of the fishes in the river ecosystem. |
| ISSN | 00489697 |
| Issue Number | 11 |
| Volume Number | 408 |
| e-ISSN | 18791026 |
| Journal | Science of The Total Environment |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2010-05-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Benzofurans Metabolism Environmental Monitoring Fishes Analogs & Derivatives Water Pollutants, Chemical Animals Analysis Carbon Isotopes Environmental Exposure Food Chain Michigan Nitrogen Isotopes Rivers Chemistry Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Waste Management and Disposal Pollution Environmental Engineering |
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