Polychlorinated biphenyl congener distributions in burbot: evidence for a latitude effect
Environmental Toxicology and Chemistry
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Abstract
We compared the distributions of the congeners of polychlorinated biphenyls (PCBs) detected in whole-body samples of burbot (Lota lota) from Great Slave Lake and Lake Erie. Total PCB concentrations in Great Slave Lake burbot were about 1/60 of the concentrations in Lake Erie burbot. Burbot from Great Slave Lake contained a higher proportion of lower-chlorinated (2-6 chlorines) congeners than did burbot from Lake Erie; the reverse occurred for more highly chlorinated (7-9 chlorines) congeners. Hexachloro congeners, followed by pentachloro congeners, dominated the proportions of total PCB in burbot from both lakes. There were no differences between sexes in whole-body samples or between gonad and somatic tissues in the proportions of the 39 congeners and three sets of co-eluters detected in burbot from Great Slave Lake. In contrast, there were distinct sex differences in congener distributions for older burbot from Lake Erie. Our results generally supported a prediction of higher proportions of lower-chlorinated PCB homologs in organisms in remote polar areas. However, the latitudinal effect on PCB congener distribution may be more complex than that portrayed in previous studies.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Polychlorinated biphenyl congener distributions in burbot: evidence for a latitude effect |
| Series title | Environmental Toxicology and Chemistry |
| DOI | 10.1002/etc.2703 |
| Volume | 33 |
| Issue | 11 |
| Year Published | 2014 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | Great Lakes Science Center |
| Description | 7 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Environmental Toxicology and Chemistry |
| First page | 2448 |
| Last page | 2454 |
| Country | Canada;United States |
| Other Geospatial | Lake Erie;Great Slave Lake |
| Google Analytic Metrics | Metrics page |