The Pattern of Glycogen Recovery in Muscles and Liver of Fish with Different Swimming Capabilities after being Caught in a Bottom Trawl

Silkina E. N.; Silkin Yu. A.; Silkin M. Yu.

摘要

The dynamics of glycogen recovery in the muscles and liver of the European flounderPlathichthys flesus(Linnaeus, 1758) and the European spratSprattus sprattus(Linnaeus, 1758) after exposure to trawl fishing has been studied. As the results show, the stress-inducing effect of fishing does not alter the glycogen content of the organs in the flounder, which leads a sedentary life, whereas a sharp decrease in glycogen is observed in the white and red muscles and the liver of the sprat, which is an actively swimming species. After capture, the dynamics of glycogen recovery in the organs of flounder has an undulatory pattern. The glycogen is completely restored within 12 h and is accompanied by a 100% survival rate of the flounder. The assumption is made that the resynthesis of glycogen in the organs of flounder occurs through the activation of carbohydrate metabolism in the liver. In sprat that had 3 h of "rest" after being caught and then placed in a 100-liter tank to restore glycogen in tissues, a pronounced (4.5-fold) increase in the level of the polysaccharide was recorded from the white muscles, with a simultaneously low glycogen level in the liver. The glycogen compensation in the sprat possibly occurred through the reverse involvement of lactate in the polysaccharide resynthesis in the white muscles. The following additional 3-h period of rest was characterized by a significant (1.7-fold) decrease in the glycogen level in the white muscles compared to that in the previous rest period. No glycogen recovery in the sprat liver was observed throughout the entire rest period. Apparently, this organ is not involved in the polysaccharide recovery processes. The low survival rate of sprat (30%) is explained by the long exposure to stress caused by both capture and captivity in the tank, to which this "excitable" species is particularly sensitive.

机译：研究了欧洲絮凝剂（Linnaeus，1758）的肌肉和肝脏中糖原回收的动态，并研究了暴露于拖网捕鱼后的欧洲仙仙蛇分子（Linnaeus，1758）。作为结果表明，捕捞的应激诱导效果不会改变捕集器中的器官的糖原含量，这导致久坐的寿命，而在白色和红色肌肉和肝脏中观察到糖原的急剧下降Sprat，这是一种积极的游泳。捕获后，甘露关膜中糖原回收的动态具有过度的图案。糖原在12小时内完全恢复，并伴随着甘氨酸的100％生存率。假设通过肝脏中的碳水化合物代谢激活，发生甘氨酸器官中的糖原的再合成。在Sprat中，在被捕获后3小时的“休息”然后置于100升罐中以恢复组织中的糖原，多糖水平的显着（4.5倍）增加，从白色肌肉记录肝脏中同时低糖原水平。 SPRAT中的糖原补偿可能通过乳酸在白肌中的多糖再生中的逆转累积而发生。与先前休息期间相比，在白色肌肉中的糖原水平的显着（1.7倍）下降的其特征在于，其特征在于白色肌肉中的显着（1.7倍）。在整个休息期间观察到Sprat肝脏中没有糖原恢复。显然，该器官不参与多糖恢复过程。 SPRAT（30％）的低生存率由罐中的捕获和囚禁引起的长时间暴露于坦克中的应力，这是这种“易激的”种特别敏感的。

The Pattern of Glycogen Recovery in Muscles and Liver of Fish with Different Swimming Capabilities after being Caught in a Bottom Trawl

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