... with a slightly reduced hypoxia tolerance. Moreover, during acute warming, coronary ligation caused cardiac function to collapse at lower temperatures and reduced overall heat tolerance relative to trout with intact coronary arteries. We also found a positive relationship between individual hypoxia and heat...

.... In addition, coronary artery transport of catecholamines and oxygen to the compact myocardium may be essential for maximal in vivo cardiac performance during adrenergic stimulation. Cardiac output ( Q̇ ), heart rate ( f H ), stroke volume ( V s) and dorsal aortic pressure ( P DA ) were measured in trout...