ISSN:
1095-8649
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
This study tests whether or not post-exercise oxygen consumption rates (Mo2) in fish are dependent upon how exhaustion is induced. A group of eight Atlantic cod (Gadus morhua) were each exercised using (1) a critical swimming speed (Ucrit) protocol, (2) an exercise protocol designed to measure anaerobic capacity of fish (Uburst), and (3) a protocol in which the fish were chased to exhaustion manually. Mo2 was measured for a 2-h period following exhaustion induced by all three exercise regimes (Ucrit, Uburst and chase). Post-exercise Mo2 following exhaustion from the Uburst and chase protocols were significantly higher than post-exercise Mo2 following the Ucrit protocol. Each fish during the Ucrit protocol exhibited maximal Mo2 during exercise rather than during recovery, yet 75% of the fish during Ubrust recovery and 100% during chase recovery exhibited Mo2 higher than that measured during Ucrit exercise. These results, as well as the large interindividual variations in Mo2 among the eight fish, show that post-exhaustion Mo2 is specific to the exercise regime employed, thus, investigators must exercise caution when combining results from different exercise protocols and/or individuals.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1095-8649.1995.tb01907.x
