Document Detail

Use of fatty acids to explain variability of organochlorine concentrations in eggs and plasma of common terns (Sterna hirundo).
MedLine Citation:
PMID:  15526860     Owner:  NLM     Status:  MEDLINE    
We have studied the breeding parameters, organochlorine compounds (OCs) concentrations, and fatty acid (FA) composition of egg yolks (n = 47) and plasma (n = 90) of common terns (Sterna hirundo) from two colonies (Banya and Fangar) in the Ebro delta, NE Spain. Terns from Banya tend to have smaller clutch size and lower hatching success than terns from Fangar. p,p'-DDE and polychlorinated biphenyls (PCBs) concentrations were almost 2-fold higher in yolks from Banya in 1998 than from Fangar in 1999, and the percentage of n-6 PUFA was positively correlated with these contaminants. Differences between samplings in OCs concentrations in plasma were less evident, and were affected by breeding chronology. The highest OCs concentrations in yolks from Banya may be explained by two processes involving the increased deposition of n-6 PUFA: (1) higher mobilization of endogenous fat due to lower food resources, or (2) differences in the diet between colonies. Birds from Banya may have been feeding at a higher degree on discards of trawling fisheries composed of demersal and benthic fish species that are more exposed to contaminants from sediment and have lower n-3/n-6 ratio, whereas birds from Fangar would feed mostly on pelagic species of small clupeiformes that are less polluted and have higher n-3/n-6 ratios.
Rafael Mateo; Càrol Gil; Montserrat Badia-Vila; Raimon Guitart; Antonio Hernández-Matías; Carola Sanpera; Xavier Ruiz
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Ecotoxicology (London, England)     Volume:  13     ISSN:  0963-9292     ISO Abbreviation:  Ecotoxicology     Publication Date:  2004 Aug 
Date Detail:
Created Date:  2004-11-05     Completed Date:  2004-12-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9885956     Medline TA:  Ecotoxicology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  545-54     Citation Subset:  IM    
Laboratory of Toxicology, Faculty of Veterinary, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Spain.
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MeSH Terms
Egg Yolk / chemistry
Eggs / analysis*
Fatty Acids / analysis*
Insecticides / chemistry,  toxicity*
Polychlorinated Biphenyls / analysis,  toxicity*
Reproduction / drug effects*
Time Factors
Water Pollutants, Chemical / toxicity
Reg. No./Substance:
0/Fatty Acids; 0/Insecticides; 0/Polychlorinated Biphenyls; 0/Water Pollutants, Chemical

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

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