Water-tunnel studies of heat balance in swimming mako sharks.

  title={Water-tunnel studies of heat balance in swimming mako sharks.},
  author={Diego Bernal and Chugey A. Sepulveda and Jeffrey B. Graham},
  journal={The Journal of experimental biology},
  volume={204 Pt 23},
The mako shark (Isurus oxyrinchus) has specialized vascular networks (retia mirabilia) forming counter-current heat exchangers that allow metabolic heat retention in certain regions of the body, including the aerobic, locomotor red muscle and the viscera. Red muscle, white muscle and stomach temperatures were measured in juvenile (5-13.6 kg) makos swimming steadily in a water tunnel and exposed to stepwise square-wave changes in ambient temperature (T(a)) to estimate the rates of heat transfer… CONTINUE READING


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