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Comparison of electrolyte excretion in smolting and nonsmolting trout (Salmo gairdneri) Stainer, Isobel M.
Abstract
Urine was collected from the trout (Salmfi gairdneri) using a cannulation technique. Total urine and electrolyte outputs decreased in smolts as compared with fresh water parr. The filtration rates, as measured using the inulin method, were concomitantly decreased in the smolts. No significant change of urine concentration, percent reabsorption or percent secretion of filtrate was recorded. There was a linear relationship between cumulative output and time indicating a steady flow rate. An increase in sodium and chloride content in the muscle was recorded during smolt transformation. Potassium and water content remained the same as in non-smolts. In the above group, the plasma sodium concentration increased. The decrease in renal output without dilution of body fluids is discussed with respect to a possible change in the extrarenal ion exchange mechanism.
Item Metadata
Title |
Comparison of electrolyte excretion in smolting and nonsmolting trout (Salmo gairdneri)
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1964
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Description |
Urine was collected from the trout (Salmfi gairdneri) using a cannulation technique. Total urine and electrolyte outputs decreased in smolts as compared with fresh water parr. The filtration rates, as measured using the inulin method, were concomitantly decreased in the smolts. No significant change of urine concentration, percent reabsorption or percent secretion of filtrate was recorded. There was a linear relationship between cumulative output and time indicating a steady flow rate.
An increase in sodium and chloride content in the muscle was recorded during smolt transformation. Potassium and water content remained the same as in non-smolts. In the above group, the plasma sodium concentration increased.
The decrease in renal output without dilution of body fluids is discussed with respect to a possible change in the extrarenal ion exchange mechanism.
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Genre | |
Type | |
Language |
eng
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Date Available |
2011-12-15
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0105995
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.