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Journal of Experimental Biology 91,293-305 (1981)
Published by Company of Biologists 1981

Cardiovascular Changes in the Lingcod (Ophiodon Elongatus) Following Adrenergic and Cholinergic Drug Infusions

A. P. FARRELL ¹

¹ Department of Zoology, University of British Columbia, Vancouver, Canada; Department of Biology, University of Mount Allison, Sackville, New Brunswick, Canada, EOA ₃3CO

Adrenergic and cholinergic agonists were infused into the ventral aorta to evoke gill vasoactivity in the lingcod, Ophiodon elongatus. Arterial blood pressures were changed, and cardiac output and stroke volume were increased. As a consequence both the pressure and flow profiles across the gill were altered, and these changes should alter the pattern of lamellar perfusion. The changes in cardiac function were apparently reflexly mediated.

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