The effect of chronic heat stress on cortisol levels in the antarctic fishPagothenia borchgrevinki

@article{Ryan2005TheEO,
  title={The effect of chronic heat stress on cortisol levels in the antarctic fishPagothenia borchgrevinki},
  author={Stuart N Ryan},
  journal={Experientia},
  year={2005},
  volume={51},
  pages={768-774}
}
Radioimmunoassay was used to determine levels of the stress-inducible glucocorticoid, cortisol, circulating in the plasma of the extremely stenothermal Antarctic fishPagothenia borchgrevinki at rest and after heat stress. Fish sampled immediately after capture (−1.9°C) had low cortisol levels (10.4±1.4 ng ml−1, mean±SEM) as did fish which were laboratory rested for 3 days. Sudden exposure to 5°C (48h) resulted in a peak cortisol value after 3 h (69.9±6.8 ng ml−1) whereas exposure to 8°C (6h… CONTINUE READING