URINE FLOW AND DIURESIS IN MARINE TELEOSTS

Abstract
Evidence from work on the sculpin and toadfish indicates that the normal urine flow is below 4 cc. per kgm. per 24 hrs., much lower than older figures. The normal urine of these 2 species was almost invariably free from chloride and relatively high in total N. Injury to the skin was identified as a principal factor in causing the abnormally high flows encountered under experimental conditions, associated with a marked rise in chloride concentration in plasma and urine. Diuresis typically increased to a peak, then decreased with approaching death, the low chloride and high total N concentrations present in the urine in the early stages becoming rapidly reversed.

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