Document Detail

Variation in fatty acid composition in muscle and heart tissues among species and populations of tropical fish in Lakes Victoria and Kyoga.
MedLine Citation:
PMID:  18712426     Owner:  NLM     Status:  MEDLINE    
The composition of the fatty acids in muscle and heart tissue of seven fish species, Nile perch (Lates niloticus), Nile tilapia (Oreochromis niloticus), marbled lungfish (Protopterus aethiopicus), African catfish (Clarias gariepinus), Lake Victoria squeaker (Synodontis victoriae), Bagrus docmas, and Tilapia zilli, from two locations in Lake Kyoga and one location in Lake Victoria was chemometrically determined. The muscle tissue was very lean, with an average of 3.4 mg total fatty acids per g tissue. The lipid level in the heart tissue was approximately five times higher than in the muscle tissue, with an average of 15.5 mg total fatty acids per g tissue. The n-3/n-6 level in the muscles was 1.7 +/- 0.7 and in the heart tissue 1.0 +/- 0.4. The muscle tissue contained an average of 46 mg cholesterol per 100 g, and the heart tissue contained about five times as much. Plasmalogens were detected in 7-8% of the amounts of total fatty acids in both muscle and heart tissue. The seven species had large differences (P < 0.05) in the fatty acid composition for both muscle and heart tissue. Within the species there were differences between fish from the populations in the three locations, although the population differences were smaller than the species differences. These differences appear to be controlled more closely by genetics/transcriptomics than by the diet.
Justus Kwetegyeka; George Mpango; Otto Grahl-Nielsen
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Publication Detail:
Type:  Journal Article     Date:  2008-08-19
Journal Detail:
Title:  Lipids     Volume:  43     ISSN:  0024-4201     ISO Abbreviation:  Lipids     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-10-30     Completed Date:  2009-03-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0060450     Medline TA:  Lipids     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1017-29     Citation Subset:  IM    
Department of Chemistry, Makerere University, PO Box 7062, Kampala, Uganda.
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MeSH Terms
Cluster Analysis
Environmental Monitoring
Fatty Acids / analysis,  chemistry*
Fishes / metabolism*
Fresh Water
Muscles / chemistry*
Myocardium / chemistry*
Species Specificity
Tissue Distribution
Reg. No./Substance:
0/Fatty Acids

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

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