Respiratory characteristics of muscle fibres in a fish (Chaenocephalus aceratus) that lacks haem pigments.

@article{Johnston1987RespiratoryCO,
  title={Respiratory characteristics of muscle fibres in a fish (Chaenocephalus aceratus) that lacks haem pigments.},
  author={Ian Andrew Johnston},
  journal={The Journal of experimental biology},
  year={1987},
  volume={133},
  pages={415-28}
}
1. Oxygen consumption, mitochondrial content and enzyme activities were determined in identified muscle fibre types of the 'haemoglobin-less' icefish Chaenocephalus aceratus Lönnberg. 2. Small bundles (2-12) of fast and slow fibres were isolated from the myotomal and superficial pectoral fin abductor muscles, respectively. At 0 degrees C the time to 50% peak force and the half-relaxation time of isometric twitches were, respectively, 18 +/- 1 and 38 +/- 4 ms for fast and 43 +/- 3 and 119 +/- 21… CONTINUE READING

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