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首页> 外文期刊>American Journal of Physiology >Effects of freshwater and saltwater adaptation and dietary salt on fluid Compartments, blood pressure, and venous capacitance in trout
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Effects of freshwater and saltwater adaptation and dietary salt on fluid Compartments, blood pressure, and venous capacitance in trout

机译：淡水和盐水的适应以及饮食盐对鳟鱼体液室，血压和静脉血容量的影响

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摘要

The relative impact of volume regulation and salt balance on blood pressure regulation in fish may be more amenable to experimentation. Saltwater (SW) fish live in an environment with a osmolarity around 1,000 mosM, whereas environmental osmolarity for freshwater (FW) fish is usually <1 mosM. These environments impose high, but opposite, transepithelial osmotic and ionic gradients on fish, and it is likely that this places considerable strain on the cardiovascular system. Trout and other euryhaline fish show a remarkable ability to adapt to either FW or SW and yet maintain plasma osmolarity close to 300 mosM. However, it is not clear whether water or salt balance takes precedence during the transition between these environments or after long-term adaptation. In fact, arguments have been presented for the primacy of either salt (37, 39) or volume (10, 22, 25, 36) regulation by fish.
机译：体积调节和盐分平衡对鱼类血压调节的相对影响可能更适合实验。盐水（SW）鱼生活在渗透压约为1000 mosM的环境中，而淡水（FW）鱼的环境渗透压通常小于1 mosM。这些环境在鱼类上产生了较高但相反的跨上皮渗透压和离子梯度，这很可能给心血管系统带来了很大的压力。鳟鱼和其他淡水鱼显示出显着的适应FW或SW的能力，同时保持血浆渗透压接近300 mosM。但是，尚不清楚在这些环境之间的过渡期间或长期适应之后，水或盐的平衡是否优先。实际上，已经提出了以鱼类对盐（37、39）或体积（10、22、25、36）的调节至上的观点。

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