Field measurements of the basal oxygen consumption of Atlantic salmon parr and smolt
T HIS investigation was undertaken in order to study, under conditions as nearly natural as possible, the basal oxygen requirements of salmon parr and smolts living at the northern limit of their range in Ungava. The results are of interest for two reasons; (1) an indication is obtained of the way t...
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| Format: | Text |
| Language: | English |
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1959
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.504.3 http://pubs.aina.ucalgary.ca/arctic/arctic12-4-194.pdf |
| Summary: | T HIS investigation was undertaken in order to study, under conditions as nearly natural as possible, the basal oxygen requirements of salmon parr and smolts living at the northern limit of their range in Ungava. The results are of interest for two reasons; (1) an indication is obtained of the way the salmon’s metabolism responds to temperature changes in its environment; (2) a point of reference is provided which, when other suitable figures are available, may be used to detect possible adaptation to cold in the metabolism of northern races of salmon. To date almost all measurements of the oxygen consumption of fish have been made in the laboratory, for the obvious reason that many of the variables inherent in the natural environment can be eliminated or controlled. From the results of such studies the behaviour of fish in nature can be predicted within limits. Caution must be exercised in doing this, since controlled laboratory conditions tend to be quite different from natural conditions where a fish is subjected to daily and seasonal fluctuations in temperature, oxygen concentration, light, food supply, and to other not |
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