Document Detail


Stable isotope-guided analysis of congener-specific PCB concentrations in a Japanese coastal food web.
MedLine Citation:
PMID:  19698960     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Organisms collected from a coastal ecosystem in Japan were analyzed for concentrations of 205 polychlorinated biphenyls (PCBs) congeners; analyses were guided by delta(13)C and delta(15)N measurements. The regression slopes of log PCB concentration on delta(15)N value are regarded as indices of biomagnification in food webs. The slope (wet weight basis) of SigmaPCBs was +0.104; the slope (lipid weight basis) was close to zero. Lipid content increased from 0.06% in a primary producer to 8.32% in the highest trophic level consumer. Hence, biomagnification of SigmaPCBs (wet weight basis) can be attributed to increase of lipid content through the food web. For most of the congeners, the slopes (wet weight basis) exceeded those (lipid weight basis) by ca. 0.10. Slopes increased with increasing PCB chlorination levels between chlorine numbers 1-6; slopes decreased at higher chlorination levels. This decrease is likely caused by a decrease in membrane permeability with increasing molecular weight.
Authors:
Hiroaki Matsuo; Masahide Kawano; Koji Omori; Kiyonori Nakajima; Ichiro Takeuchi
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-08-20
Journal Detail:
Title:  Marine pollution bulletin     Volume:  58     ISSN:  1879-3363     ISO Abbreviation:  Mar. Pollut. Bull.     Publication Date:  2009 Nov 
Date Detail:
Created Date:  2009-10-26     Completed Date:  2009-11-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0260231     Medline TA:  Mar Pollut Bull     Country:  England    
Other Details:
Languages:  eng     Pagination:  1615-23     Citation Subset:  IM    
Affiliation:
Department of Life Environment Conservation, Faculty of Agriculture, Ehime University, Matsuyama, Ehime 790-8566, Japan.
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MeSH Terms
Descriptor/Qualifier:
Animals
Carbon Isotopes
Environmental Monitoring
Fishes / metabolism
Food Chain
Invertebrates / metabolism
Japan
Lipids / analysis
Nitrogen Isotopes
Pacific Ocean
Polychlorinated Biphenyls / analysis*,  metabolism
Seaweed / metabolism
Water Pollutants, Chemical / analysis*,  metabolism
Chemical
Reg. No./Substance:
0/Carbon Isotopes; 0/Lipids; 0/Nitrogen Isotopes; 0/Polychlorinated Biphenyls; 0/Water Pollutants, Chemical

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


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