Document Detail

Docosahexaenoic acid levels in the lipids of spotted mackerel Scomber australasicus.
MedLine Citation:
PMID:  17069355     Owner:  NLM     Status:  MEDLINE    
The lipid and FA compositions of various organs and of the stomach contents of Scomber australasicus were analyzed. DHA was characteristically the major FA of all the major lipid classes of all organs except for liver TAG. The mean DHA contents of the various organs accounted for more than 17% of the total FA (TFA), whereas those in the stomach contents, originating from the prey, fluctuated and were generally low. In particular, the DHA levels in the TAG from all organs of S. australasicus accounted for up to 17% of TFA, even though it is a neutral depot lipid. S. australasicus contained markedly high levels of DHA, even though it is a small-sized Scombridae species, and its high levels of DHA were close to those in large-sized highly migratory tuna species. Furthermore, DHA levels in its muscle TAG were consistently high, compared with those in the visceral TAG, which might be directly influenced by the prey lipids. These phenomena suggest that long-distance migration has a close relationship with high accumulation of DHA in fish tissues, since S. australasicus is reported to migrate in offshore water, similar to highly migratory tuna species. Additionally, the physiological selective accumulation of DHA in the muscle during migration is caused by in vivo metabolism of FA in the vascular system, suggesting that DHA is poorly used as a source of migration energy, though it is provided abundantly through the prey lipids.
Kazufumi Osako; Hiroaki Saito; Mohammed Anwar Hossain; Koichi Kuwahara; Akira Okamoto
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Lipids     Volume:  41     ISSN:  0024-4201     ISO Abbreviation:  Lipids     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-10-30     Completed Date:  2006-11-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0060450     Medline TA:  Lipids     Country:  United States    
Other Details:
Languages:  eng     Pagination:  713-20     Citation Subset:  IM    
Food Science and Technology Section, Nagasaki Prefectural Institute of Fisheries, Nagasaki-shi 851-2213, Japan.
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MeSH Terms
Animal Migration
Docosahexaenoic Acids / analysis*
Food Chain
Lipids / chemistry*,  classification
Organ Specificity
Reg. No./Substance:
0/Lipids; 25167-62-8/Docosahexaenoic Acids

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