A micropuncture study of kidney function in the river lamprey Lampetra fluviatilis adapted to sea water.
摘要：
Micropuncture techniques have been used to investigate kidney function in adapted to hyperosmotic media. Plasma electrolyte concentrations were maintained well below corresponding concentrations in the external environment. Urine composition was variable, but generally showed high concentrations of , sulphate and . in 50% sea produced urine which was hypo or iso-osmotic to plasma, whereas those in 100% sea produced hyperosmotic urine. Urine flow rate in 50% sea was one tenth of that in fresh , due to a reduction in filtration rate and an increase in reabsorption by the kidney. As in fresh , little if any filtered was reabsorbed by the proximal segment. Almost 90% of filtered was reabsorbed by the kidney of 100% sea and most of this must have occurred in the distal and collecting segments.
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DOI：
doi:http://dx.doi.org/
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年份：
1980
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