Abstract

The osmotic concentration; the concentrations of sodium and potassium; the content of total, free, attached water fractions in plasma; and the content of interstitial and cerebrospinal fluid, in the brain, muscles, liver, and erythrocytes typical for the fish in the native environment were determined for cod Gadus morhua. Under stress, a protective reaction is implemented, it prevents tissue dehydration by increasing the osmotic concentration in the interstitial fluid in the European flounder Platichthys flesus, spotted wolffish Anarhichas minor, lumpsucker Cyclopterus lumpus, and short-horn sculpin Myoxocephalus scorpius. The osmotic concentration preconditioned by inorganic ions in the muscles, liver, and erythrocytes of cod is significantly lower compared to the internal environment. The lack of ions in the tissues is compensated by the accumulation of organic osmolytes. Similar patterns are observed in euryhaline species when acclimated to the marine environment and in freshwater fish in the zone of critical salinity. Values of the osmotic concentration and sodium and potassium content in the blood plasma and tissues of the White Sea fish refer to the corresponding regulation ranges obtained for euryhaline and freshwater fish in the salinity range compatible with life activity.

中文翻译：

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白海鱼类的渗透和离子调节指标

摘要

渗透浓度 钠和钾的浓度；血浆中游离游离水总量的含量；并测定了鳕鱼Gadus morhua中鱼的典型大脑，肌肉，肝脏和红细胞中的间质和脑脊液的含量。在压力下，可以执行保护性反应，通过增加欧洲比目鱼Platichthys flesus，斑点狼鱼Anarhichas minor，lumpsucker Cyclopterus lumpus和短角鱼Myoxocephalus蝎的间质液中的渗透浓度来防止组织脱水。与内部环境相比，由鳕鱼的肌肉，肝脏和红细胞中的无机离子预处理的渗透浓度明显较低。组织中离子的缺乏可通过有机渗透物的积累得到补偿。当适应海水环境和临界盐度区的淡水鱼时，在淡水鱼种中观察到类似的模式。白海鱼血浆和组织中的渗透浓度和钠，钾含量的值是指在与生命活动相适应的盐度范围内，为淡水鱼和淡水鱼获得的相应调节范围。