Changes in volume of a brackish water prawn in different media
Changes in volume of a brackish water prawn in different media
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咸水虾在不同介质中体积的变化
DOI：
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发表时间：
1966
期刊：
影响因子：
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通讯作者：
C. Gnanamuthu
中科院分区：
文献类型：
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作者：
C. Gnanamuthu
等渗介质中的体积变化表明，肠道通过口腔和肛门吸收和排出水分时，能够改变全身的体积。当转移到非等渗介质时，当有水进入或流出血淋巴时，这种体积变化以及内部压力关系的变化变得显著。在稀释液中，水进入血淋巴会增加血淋巴的体积；它对肠道的压力不仅可以阻止水的进一步进入，还可以促进低渗水从血淋巴渗入肠道。在高渗介质中，水分的损失和血淋巴体积的减少伴随着来自更膨胀的肠道的压力的增加，导致稀释的海水从肠道超滤进入血淋巴。对虾在稀释液中习服的体容减小，在浓缩液中的体容增大，以及在非渗透媒质中习服的对虾体量出现波动，这些特征与流体压力对肠壁水分的主动调节作用有关。
The changes in volume in isosmotic medium show that the gut while taking in and giving out water through the mouth and anus is capable of altering the volume of the whole body. Such changes in volume, and therefore of pressure relations within, become significant when as the result of transfer to anisosmotic media, there is osmotic entry or escape of water, into and out of the haemolymph. In dilute medium the entry of water into the haemolymph increases its volume; and its pressure on the gut may not only check further entry of water but may facilitate filtration of hypotonic water from the haemolymph into the gut. In hyperosmotic medium, the loss of water and reduction of haemolymph volume are accompanied by increase of pressure from the more distended gut causing ultra filtration of dilute sea-water from the gut into the haemolymph. The decrease of the body volume in prawns acclimatised to dilute medium and the increase of body volume in concentrated medium, as well as the fluctuations in volume of prawns acclimatised to anisosmotic media, are features associated with the part played by fluid pressure in active regulation of water across the gut wall.