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首页> 外文期刊>The Journal of Experimental Biology >Osmoregulation in the Antarctic nematode Panagrolaimus davidi
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Osmoregulation in the Antarctic nematode Panagrolaimus davidi

机译:南极线虫Panagrolaimus davidi中的渗透调节

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摘要

A technique for determining the internal osmotic concentration of a small nematode using a modified nanolitre osmometer is described and used to investigate osmoregulation in the Antarctic nematode Panagrolaimus davidi. This technique enables the osmotic concentration to the measured with an accuracy of +/- 12 mmol kg(-1). The pattern of melting in the nematode's different body compartments suggests that it is the osmolality of its pseudocoelomic fluid that is being measured. Panagrolaimus davidi maintains its internal osmotic concentration above that of the external medium and is thus an hyperosmotic regulator. The nematode achieves regulation under hyposmotic stress more rapidly than under hyperosmotic stress.
机译:描述了一种使用改进的纳升渗透压计确定小型线虫内部渗透浓度的技术,该技术用于研究南极线虫Panagrolaimus davidi中的渗透调节作用。此技术使渗透浓度达到+/- 12 mmol kg(-1)的精度。线虫不同体腔内的融化模式表明,正在测量的是伪造液的重量克分子渗透压浓度。 Panagrolaimus davidi维持其内部渗透浓度高于外部培养基的浓度,因此是高渗透调节剂。线虫在低渗胁迫下比在高渗胁迫下更快地达到调节。

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