This study tests whether or not post-exercise oxygen consumption rates (M ·  2 ) 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 (U crit ) protocol, (2) an exercise protocol designed to measure anaerobic capacity of fish (U burst ), and (3) a protocol in which the fish were chased to exhaustion manually. M ·  2 was measured for a 2-h period following exhaustion induced by all three exercise regimes (U crit , U burst and chase). Post-exercise M ·  2 following exhaustion from the U burst and chase protocols were significantly higher than post-exercise M ·  2 following the U crit protocol. Each fish during the U crit protocol exhibited maximal M ·  2 during exercise rather than during recovery, yet 75% of the fish during U burst recovery and 100% during chase recovery exhibited M ·  2 higher than that measured during U crit exercise. These results, as well as the large interindividual variations in M ·  2 among the eight fish, show that postexhaustion M ·  2 is specific to the exercise regime employed, thus, investigators must exercise caution when combining results from different exercise protocols and/or individuals.1995 The Fisheries Society of the British Isles

No abstract

No abstract

No abstract

No abstract