| Autor: |
Elliott, J. E., Wilson, L. K., Langelier, K. W., Norstrom, R. J. |
| Předmět: |
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| Zdroj: |
Environmental Pollution. 1996, Vol. 94 Issue 1, p9. 1p. |
| Abstrakt: |
A total of 278 carcasses of bald eagles found dead or dying in British Columbia were obtained for this study. Specimens were necropsied and the cause of death determined. Livers from a subset of 75 birds were analyzed for poly‐chlorinated biphenyl (PCB) and organochlorine (OC) pesticide residues. A subset of 19 presumably resident eagles found dead around the Strait of Georgia, an area of known pulp mill pollution, were analyzed for polychlorinated dibenzo‐p‐dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) and non‐ortho PCBs. Liver concentrations ranged from less than 1 milligram per kilogram (mg/kg) to 190 mg/kg for DDE, and up to 72 mg/kg for total PCBs. Concentrations of other OCs were generally less than 1 mg/kg, with the exception of chlordane‐related compounds, which were occasionally over 2 mg/kg. All birds analyzed for PCDDs and PCDFs contained detectable concentrations of the major 2,3,7,8‐substituted isomers. Some birds were very contaminated. A negative relationship between PCBs and DDE and numeric scoring of body condition tended to reflect the process of starvation‐induced mobilization of body lipids and contaminants. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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