Cerebral Blood Flow and Ventral Aortic Blood Pressure Response During Elevation of Intracranial Pressure in Bluefish (Pomatomus saltatrix)

Regulation of blood pressure differs in mammals and fishes. The effect of intracranial pressures (ICP), which affects blood pressure and heart rate, on central blood flow (CBF) and blood pressures was studied in bluefish. ICP was directly proportional to ventral aortic blood pressure but caused reduction in CBF. On the other hand, increasing blood pressure caused restoration of CBF. Thus, blood pressure of bluefish is affected by the need for oxygen in the brain.