Document Detail


Polychlorinated naphthalenes and polychlorinated biphenyls in benthic organisms of a Great Lakes food chain.
MedLine Citation:
PMID:  15346781     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Invasion of zebra mussels, Dreissena polymorpha, and round gobies, Neogobius melanostomus, into the Great Lakes has altered the food web structure and thereby the pathways of toxic contaminants such as polychlorinated biphenyls (PCBs) and polychlorinated naphthalenes (PCNs). In this study, concentrations of PCNs and PCBs were measured in organisms of a Great Lakes benthic food chain encompassing zebra mussels. PCNs were found in all of the benthic organisms, including phytoplankton, algae, amphipods, zebra mussels, round goby, and smallmouth bass, Micropterus dolomieui. Concentrations of PCNs were greater in samples collected from the Raisin River than in samples from the St. Clair River. Biomagnification factors (BMF) for tetra- through octa-CN congeners in going from algae to zebra mussels from the St. Clair River ranged from 3 to 10. No major biomagnification of PCNs was found in round gobies, when concentrations were related to those in their prey species, zebra mussels. The biomagnification potential of PCNs appears to be similar to that of PCBs in the benthic food chain investigated in this study, despite the fact that PCNs may be metabolized by organisms higher in the food chain. Among several congeners, the BMFs of PCN congeners 35, 42, 43/45, 52/60, 58, and 66/67 were highest in round gobies. PCNs accounted for 1-22% of the total TEQs (toxic equivalents) of PCBs and PCNs in benthic organisms analyzed in this study. PCB congener 126 was the major contributor to TEQs, accounting for 72-99% of the PCB-TEQs in the food chain organisms analyzed.
Authors:
N Hanari; K Kannan; Y Horii; S Taniyasu; N Yamashita; D J Jude; M B Berg
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of environmental contamination and toxicology     Volume:  47     ISSN:  0090-4341     ISO Abbreviation:  Arch. Environ. Contam. Toxicol.     Publication Date:  2004 Jul 
Date Detail:
Created Date:  2004-09-06     Completed Date:  2004-09-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0357245     Medline TA:  Arch Environ Contam Toxicol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  84-93     Citation Subset:  IM    
Affiliation:
National Institute of Advanced Industrial Science and Technology, 16-1 Onogawa, Tsukuba, Japan.
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MeSH Terms
Descriptor/Qualifier:
Algae
Amphipoda
Animals
Bivalvia
Environmental Monitoring
Fishes
Food Chain*
Great Lakes Region
Naphthalenes / analysis*,  pharmacokinetics*
Phytoplankton
Polychlorinated Biphenyls / analysis*,  pharmacokinetics*
Tissue Distribution
Water Pollutants, Chemical / analysis,  pharmacokinetics*
Chemical
Reg. No./Substance:
0/Naphthalenes; 0/Polychlorinated Biphenyls; 0/Water Pollutants, Chemical

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


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