Regiospecificity Profiles of Storage and Membrane Lipids from the Gill and Muscle Tissue of Atlantic Salmon ( Salmo salar L.) Grown at Elevated Temperature

Regiospecific and traditional analysis, of both storage and membrane lipids, was performed on gill, white muscle, and red muscle samples taken from Atlantic salmon (Salmo salar) to gauge the effect of elevated water temperature. The fish, fed a commercial diet, were held at an elevated water tempera...

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Bibliographic Details
Published in:Lipids
Main Authors: Miller, MR, Nichols, PD, Barnes, JC, Davies, NW, Peacock, EJ, Carter, CG
Format: Article in Journal/Newspaper
Language:English
Published: A O C S Press 2006
Subjects:
Agricultural and Veterinary Sciences
Fisheries Sciences
Aquaculture
Atlantic salmon
Salmo salar
Online Access:https://doi.org/10.1007/s11745-006-5042-5
http://www.ncbi.nlm.nih.gov/pubmed/17152924
http://ecite.utas.edu.au/41554
Description
Summary:Regiospecific and traditional analysis, of both storage and membrane lipids, was performed on gill, white muscle, and red muscle samples taken from Atlantic salmon (Salmo salar) to gauge the effect of elevated water temperature. The fish, fed a commercial diet, were held at an elevated water temperature of 19C. Total n-3 PUFA, total PUFA, and n-3/n-6 and unsaturated/saturated fatty acid (UFA/SFA) ratios in the FA profile of the total lipid extract in the white muscle were fairly low compared with fish grown at 15C. Adaptation of structural and storage lipids at elevated temperatures was shown by a significant (P < 0.01) reduction in PUFA especially in the percentage of EPA (6-8%). Further adaptation, was indicated by the percentages of SFA, which were significantly (P < 0.05) higher in gill (56%) and white muscle (58%) polar lipid fractions and coincided with lower percentages of n-3, n-6, and total PUFA. The regiospecific profiles indicated a high affinity of DHA to the sn-2 position in both the TAG (61-68%) and polar lipid (35-60%) fractions. The combination of detailed regiospecific and lipid analyses demonstrated adaptation of cell membrane structure in Atlantic salmon grown at an elevated water temperature. Copyright 2006 by AOCS Press.

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