Document Detail


Potential risk to wood storks (Mycteria americana) from mercury in Carolina Bay fish.
MedLine Citation:
PMID:  12395855     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Carolina bays are freshwater wetlands that serve as important feeding habitats for the endangered wood stork (Mycteria americana). Water levels in these bays fluctuate greatly and tend to be acidic and rich in dissolved organic carbon (DOC), factors that favor mercury (Hg) methylation and bioaccumulation in fish. To assess potential risks to wood storks consuming mercury contaminated fish in bays, we sampled fish from 10 bays on the Savannah River Site (SRS), South Carolina, an area with documented use by wood storks. Whole body mercury concentrations in 258 fishes of three species (Erimyzon sucetta, Acantharchuspomotis and Esox americanus) commonly consumed by wood storks were determined. Risk factors for nestlings and free-ranging adults were calculated using published no and lowest observable adverse effect concentration (NOAEC and LOAEC) values for birds. Fish from higher trophic levels and those from wetlands with relatively shallow maximum depths and fluctuating water levels were more likely to exceed NOAEC and LOAEC values. Calculation of exposure rates of nestling wood storks indicated they are at highest risk during the first 10 days of the nestling period. These calculations suggest that there is potential concern for wood storks foraging in relatively shallow bays with fluctuating water levels, even though there is no obvious local source of mercury to these wetlands.
Authors:
Heather A Brant; Charles H Jagoe; Joel W Snodgras; A Lawrence Bryan; Joan C Gariboldi
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  120     ISSN:  0269-7491     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2002  
Date Detail:
Created Date:  2002-10-24     Completed Date:  2003-03-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  England    
Other Details:
Languages:  eng     Pagination:  405-13     Citation Subset:  IM    
Affiliation:
University of Georgia's Savannah River Ecology Laboratory, Aiken, SC 29802, USA. brant@srel.edu
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MeSH Terms
Descriptor/Qualifier:
Animal Feed*
Animals
Animals, Newborn
Birds*
Environmental Pollution*
Fishes
Food Contamination*
Fresh Water
Mercury / analysis
Mercury Poisoning*
Risk Assessment
Toxicity Tests
Water Movements
Water Pollutants / analysis
Chemical
Reg. No./Substance:
0/Water Pollutants; 7439-97-6/Mercury

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


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