Some Physiological Consequences of Aortic Catheterization in the Brook Trout (Salvelinus fontinalis)

The effects of aortic catheterization upon the hematology and water-electrolyte regulation of brook trout have been followed for a period of 72 hr after completion of the procedure. The data indicate the markedly traumatic character of techniques of this general type, and the need for much longer recovery periods than have generally been allowed in studies on the cardiovascular physiology of salmonids.