渗透压对金鱼的意义

渗透压对金鱼的意义

金鱼（细节）

对于金鱼来说，渗透压是金鱼体液的浓度，而盐决定了渗透压的水平。换句话说，高渗透压意味着体液中的高盐含量。正常喂食水中的盐浓度很低（渗透压很低），而金鱼的体液浓度通常为0.5%。理论上，这意味着体液将继续流向渗透压相对较低的水中。如果是这样，金鱼不会死于脱水吗？幸运的是，金鱼可以通过鳃和肾脏的功能来调节自己，也就是说，在正常情况下，金鱼基本不喝水，通过鳃的运动主动吸收水中的盐分；当饲料水的浓度高于0.5%时，金鱼会大量饮水，并将多余的盐分排出体外。此外，体表的粘膜成为它们之间的屏障，阻止水通过体表。当粘膜受损时，鱼需要更多的能量来调节渗透压。现在回答上面提到的问题：为什么你总是说“加热并加盐”、“土霉素+盐”和“呋喃西林+盐”？简而言之，它利用渗透压原理来促进药物的吸收并杀死水中的细菌。顺便说一句，如何消毒盐也利用渗透压，因为细菌是由单个细胞或几个细胞组成的。由于渗透压的存在，当周围环境的渗透压高时，细菌会立即失水、脱水并死亡。然而，你的鱼友应该注意，细菌不是病毒。由于病毒没有细胞质，渗透压对病毒无效

The meaning of osmotic pressure to goldfish

Goldfish (details)

For goldfish, osmotic pressure is the concentration of goldfish body fluid, and salt determines the level of osmotic pressure. In other words, high osmotic pressure means high salt content in body fluid. The concentration of salt in normal feeding water is very low (osmotic pressure is very low), while the concentration of body fluid of goldfish is usually 0.5%. In theory, this means that body fluid will continue to flow to water with relatively low osmotic pressure. If so, won't goldfish die of dehydration? Fortunately, goldfish can adjust themselves through the function of gills and kidneys, that is to say, under normal circumstances, goldfish basically do not drink water, and actively absorb the salt in the water through the movement of gills; When the concentration of feed water is higher than 0.5%, goldfish will drink a lot of water and discharge the excess salt out of the body. Moreover, the mucous membrane on the body surface becomes the barrier between them, preventing water from passing through the body surface. When the mucous membrane is damaged, the fish needs more energy to regulate the osmotic pressure. Now answer the question mentioned above: Why do you always say "heating up and adding salt", "oxytetracycline+salt", and "furacilin+salt"? In a nutshell, it uses the principle of osmotic pressure to promote the absorption of drugs and kill bacteria in water. By the way, how to sterilize salt also makes use of osmotic pressure, because bacteria are composed of single cells or several cells. Due to the existence of osmotic pressure, when the osmotic pressure of the surrounding environment is high, the bacteria will immediately lose water, dehydrate and die. However, you fish friends should note that bacteria are not viruses. Because viruses have no cytoplasm, osmotic pressure is not effective for viruses