Document Detail


Polychlorinated biphenyls in salmon and salmon feed: global differences and bioaccumulation.
MedLine Citation:
PMID:  16245806     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Concentrations of 160 polychlorinated biphenyl (PCB) congeners or congener groups were determined in approximately 600 farmed Atlantic salmon from around the world and wild (ocean-caught) Pacific salmon from the Northeast Pacific. Concentrations and PCB congener profiles were analyzed to provide insight into the sources and uptake of PCBs in salmon as well as regional differences. Although total PCB concentrations in wild salmon appeared to be correlated to total lipid content, the increased proportion of total lipids in the farmed salmon could not account for the much greater PCB concentrations. We investigated the PCB congener patterns of hundreds of salmon samples using principal component analysis to further illuminate regional and species differences. Three major PCB patterns were observed, in most wild fish (except British Columbia and Oregon chinook), in farmed fish from the Atlantic, and in most farmed fish from the Pacific. The PCB congener profiles of farmed salmon often closely corresponded to a sample of commercial feed purchased in the same region, indicating that the feed is likely to be the major source of PCBs for farmed salmon. In such cases where PCB profiles in fish and feed were similar, a comparison of congener concentrations in fish and the feed showed that the majority of congeners, with some notable exceptions, were bioaccumulative to the same extent, irrespective of physical properties.
Authors:
Daniel L Carlson; Ronald A Hites
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental science & technology     Volume:  39     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2005 Oct 
Date Detail:
Created Date:  2005-10-25     Completed Date:  2006-06-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  7389-95     Citation Subset:  IM    
Affiliation:
School of Public and Environmental Affairs, Indiana University, Bloomington, Indiana 47405, USA.
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MeSH Terms
Descriptor/Qualifier:
Animal Feed / analysis*
Animals
Environmental Pollutants / analysis*,  pharmacokinetics
Lipids / analysis
Polychlorinated Biphenyls / analysis*,  pharmacokinetics
Principal Component Analysis
Salmon / metabolism*
Species Specificity
Chemical
Reg. No./Substance:
0/Environmental Pollutants; 0/Lipids; 0/Polychlorinated Biphenyls

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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