ISSN:
1432-1351
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary 1. The maximum values obtained for urinary osmotic pressure, and sodium, chloride and potassium ion concentrations are 2050 mOsm/L, 523 mEq Na+/L, 508 mEq Cl-/L and 136 mEq K+/L, respectively. The concentrations of sodium and chloride ions in the urine are about equal to those of sea water and the results show that the harbor seal must draw on body water to eliminate all of the ions introduced by sea water ingestion. 2. Distilled water ingestion results in an increase in urine volume and a decrease in urine osmotic pressure, specific gravity and ion concentrations. 3. Following sea water ingestion, a large increase in urine volume occurs within 2 hours, urine osmolality remains constant or increases, and sodium and chloride ion concentrations increase to maximum values within 3 to 5 hours. Urine specific gravity decreases abruptly 1 to 2 hours after sea water ingestion, followed by a progressive increase for the duration of the tests.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00696628
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