Fatty Acid Content of Phospholipids and Triacylglycerols in Juvenile Atlantic Salmon Salmo salar L. Reared under Different Lighting and Feeding Regimes in Aquaculture (North Ossetia-Alania)

IF 0.5 4区生物学 Q4 DEVELOPMENTAL BIOLOGY Russian Journal of Developmental Biology Pub Date : 2024-07-18 DOI:10.1134/s1062360424700012

S. N. Khurtina, S. A. Murzina, D. S. Provotorov, V. P. Voronin, A. E. Kuritsyn, N. N. Nemova

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Abstract

The photoperiod is an important ecological factor synchronizing the endogenous rhythms of growth and development of the Atlantic salmon Salmo salar L. The changes in the FA content of phospholipids (PL) and triacylglycerols (TAG) during the growth and development of Atlantic salmon juveniles (fingerlings, parrs, and smolts) at different lighting and feeding regimes in aquaculture of the southern region (North Ossetia, Alania) were studied. A high content of saturated fatty acids (SFA) and a consistently high content of polyunsaturated fatty acids (PUFA) in PL (more than 40% of the total FA) were detected. An increase in the content of PUFA in TAG both in the salmon liver and in muscles during development from fingerlings to smolts indicated the biochemical changes in the fish organism preparing for smoltification and the transition to living in sea water. Among PUFA, n-3 PUFA dominated, while the content of n-6 PUFA was no more than 5% both in PL and TAG of juvenile salmon. At the same time, among PUFA the content of eicosapentaenoic acid 20:5(n-3) (EPA) in the muscles of both parrs and smolts was higher than in the liver, where docosapentaenoic acid 22:5(n-3) (DPA) dominated. The results of quantitative and qualitative changes in the FA components of lipids in juvenile salmon depending on changes in the lighting and feeding regimes are important for understanding the mechanisms of ecological and biochemical adaptations that determine the early development of salmon and its transition to the smoltification.

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水产养殖中不同光照和饲养条件下饲养的大西洋鲑鱼幼鱼磷脂和三酰甘油的脂肪酸含量（北奥塞梯-阿拉尼亚地区）

研究了在南部地区（北奥塞梯、阿拉尼亚）水产养殖中，不同光照和投喂制度下大西洋鲑幼鱼（幼鱼、稚鱼和幼鱼）生长发育过程中磷脂（PL）和三酰甘油（TAG）中FA含量的变化。结果发现，PL 中饱和脂肪酸 (SFA) 含量高，多不饱和脂肪酸 (PUFA) 含量一直很高（占总脂肪酸的 40% 以上）。在鲑鱼从幼鱼到幼鱼的发育过程中，肝脏和肌肉中的 TAG 中的 PUFA 含量增加，这表明鱼类机体在为蜕皮和过渡到海水生活做准备时发生了生化变化。在 PUFA 中，n-3 PUFA 占主导地位，而 n-6 PUFA 在幼鲑的 PL 和 TAG 中的含量均不超过 5%。同时，在 PUFA 中，稚鲑和幼鲑肌肉中二十碳五烯酸 20:5(n-3) (EPA) 的含量高于肝脏中的二十二碳五烯酸 22:5(n-3) (DPA)。鲑鱼幼鱼脂质中 FA 成分的定量和定性变化取决于光照和摄食制度的变化，这些结果对于了解决定鲑鱼早期发育及其向蜕皮过渡的生态和生化适应机制非常重要。

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来源期刊

Russian Journal of Developmental Biology DEVELOPMENTAL BIOLOGY-

自引率

28.60%

发文量

审稿时长

>12 weeks

期刊介绍： Russian Journal of Developmental Biology is a journal that publishes reviews and experimental articles dealing with various aspects of developmental biology. It presents fundamental and applied research on development, regeneration, and carcinogenesis at the molecular, cellular, and organismic levels.