Changes of blood chloride and osmolarity in two stocks of salmon parr ( Salmo salar ) during short-term exposure to seawater

Two stocks of hatchery-reared Salmo salar parr were tested for change of blood chloride and plasma osmotic concentration following their transfer from freshwater to diluted seawater for periods up to 256 h. One group of fish originated from an anadromous population (Atlantic salmon) while the others...

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Bibliographic Details
Published in:Canadian Journal of Zoology
Main Author: Leduc, GĂ©rard
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1972
Subjects:
Online Access:http://dx.doi.org/10.1139/z72-136
http://www.nrcresearchpress.com/doi/pdf/10.1139/z72-136
Description
Summary:Two stocks of hatchery-reared Salmo salar parr were tested for change of blood chloride and plasma osmotic concentration following their transfer from freshwater to diluted seawater for periods up to 256 h. One group of fish originated from an anadromous population (Atlantic salmon) while the others were from a freshwater stock (ouananiche). The results suggest that, at least at the parr stage, the young salmon of both groups have very similar osmoregulation.