Document Detail


Changes in the fatty acid composition of phospholipids in tissues of farmed sea bass (Dicentrarchus labrax) during an annual cycle. Roles of environmental temperature and salinity.
MedLine Citation:
PMID:  12431395     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We quantified seasonal effects on fatty acid composition of tissue phospholipids in farmed sea bass. Major changes in percent phosphatidylethanolamine and phosphatidylcholine were observed in all tissues between February and March, and the phosphatidylcholine/phosphatidylethanolamine ratio was drastically reduced at this time. Different changes in the fatty acid composition of total phospholipids were observed in all tissues examined. Fish fed all year on the same commercial diet showed a significant correlation between water salinity and percentage of 22:6n-3 in muscle, liver and gill phospholipids, but no correlation was found between percent 22:6n-3 of phospholipids and water temperature. In each tissue, we observed annual variation in the 20:5n-3/20:4n-6 ratio in phospholipids, but maximum and minimum values occurred at different times in each organ. From these results, we conclude that salinity can play a significant role in modulating the activities of enzymes acting on lipid metabolism during their natural circannual cycles.
Authors:
Michel Cordier; Gérard Brichon; Jean-Michel Weber; Georges Zwingelstein
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology     Volume:  133     ISSN:  1096-4959     ISO Abbreviation:  Comp. Biochem. Physiol. B, Biochem. Mol. Biol.     Publication Date:  2002 Nov 
Date Detail:
Created Date:  2002-11-14     Completed Date:  2003-07-28     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  9516061     Medline TA:  Comp Biochem Physiol B Biochem Mol Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  281-8     Citation Subset:  IM    
Copyright Information:
Copyright 2002 Elsevier Science Inc.
Affiliation:
Institut Michel Pacha, Université Claude Bernard, Lyon I, 1137 Corniche Michel Pacha, F83500 La Seyne sur mer, France.
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MeSH Terms
Descriptor/Qualifier:
Acclimatization
Animals
Bass / blood,  metabolism*
Diet
Fatty Acids / analysis*,  metabolism
Gills / chemistry
Liver / chemistry
Muscle, Skeletal / chemistry
Osmolar Concentration
Phospholipids / analysis*,  metabolism
Seasons
Seawater / chemistry*
Temperature
Time
Chemical
Reg. No./Substance:
0/Fatty Acids; 0/Phospholipids

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


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