PHOSPHOLIPID COMPOSITION OF FINGERLINGS OF ATLANTIC SALMON <i>SALMO SALAR</i> DURING GROWTH AND DEVELOPMENT IN AQUACULTURE: THE EFFECT OF DIFFERENT LIGHTING AND FEEDING REGIMES

The effect of different modes of feeding and lighting (natural and continuous) on the phospholipid composition of Atlantic salmon fingerlings reared under commercial aquaculture in the summer-autumn period in North Ossetia-Alania was studied. Qualitative and quantitative determination of phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylinositol, lysophosphatidylcholine, sphingomyelin was carried out by high performance liquid chromatography. A decrease (September-November) The content of the studied phospholipids in fingerlings decreased, which should be considered primarily as a biochemical adaptation of development, preparation of juveniles for the upcoming smoltification. The effects of lighting and feeding regime on phospholipid composition were found mainly in fish reared under constant lighting and 24/7 feeding and fish reared under natural light and feeding during daylight hours, however, the observed changes were not specific to a particular experimental group of fish in the framework of this study.