Swimming performance and metabolism of 0+ year Thymallus arcticus
The prolonged swimming speed and metabolic rate of 0+ year Arctic grayling Thymallus articus were examined with respect to current velocity, water temperature and fish size, and compared to conditions fish occupy in the river. Oxygen consumption (mg O 2 h −1 ) increased with fish mass and temperatur...
| Published in: | Journal of Fish Biology |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
2005
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1111/j.0022-1112.2005.00784.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-1112.2005.00784.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-1112.2005.00784.x |
| Summary: | The prolonged swimming speed and metabolic rate of 0+ year Arctic grayling Thymallus articus were examined with respect to current velocity, water temperature and fish size, and compared to conditions fish occupy in the river. Oxygen consumption (mg O 2 h −1 ) increased with fish mass and temperature (6–23° C), with a steep increase in metabolic rate between 12 and 16° C. Absolute prolonged swimming speed (cm s −1 ) increased rapidly with fish size (total length, L T , and mass), however, fish in the natural stream habitat occupied current velocities between 15 and 25 cm s −1 or 4 L T s −1 , approximately half their potential prolonged swimming speed (10 L T s −1 ). |
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