Profiling Phospholipids within Atlantic Salmon Salmo salar with Regards to a Novel Terrestrial Omega-3 Oil Source

Citation

Broughton R, Tocher DR, Napier JA & Betancor MB (2022) Profiling Phospholipids within Atlantic Salmon Salmo salar with Regards to a Novel Terrestrial Omega-3 Oil Source. Metabolites, 12 (9), Art. No.: 851. https://doi.org/10.3390/metabo12090851

Abstract
The development and inclusion of novel oils derived from genetically modified (GM) oilseeds into aquafeeds, to supplement and supplant current terrestrial oilseeds, as well as fish oils, warrants a more thorough investigation into lipid biochemical alterations within finfish species, such as Atlantic salmon. Five tissues were examined across two harvesting timepoints to establish whether lipid isomeric alterations could be detected between a standard commercial diet versus a diet that incorporated the long-chain polyunsaturated fatty acids (LC-PUFA), EPA (eicosapentaenoic acid), and DHA (docosahexaenoic acid), derived from the GM oilseed Camelina sativa. Tissue-dependent trends were detected, indicating that certain organs, such as the brain, have a basal limit to LC-PUFA incorporation, though enrichment of these fatty acids is possible. Lipid acyl alterations, as well as putative stereospecific numbering (sn) isomer alterations, were also detected, providing evidence that GM oils may modify lipid structure, with lipids of interest providing a set of targeted markers by which lipid alterations can be monitored across various novel diets.

Keywords
lipidomics; phospholipids; salmon; aquaculture; GM; novel feeds

Journal
Metabolites: Volume 12, Issue 9

People

Dr Monica Betancor

Associate Professor, Institute of Aquaculture

Dr Richard Broughton

Post Doctoral Research Fellow, Institute of Aquaculture

Professor Johnathan Napier

Honorary Professor, Institute of Aquaculture