QUICK SEARCH:   [advanced] Author: Keyword(s):
Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by CAMERON, J. N. Articles by RANDALL, D. J. Search for Related Content PubMed PubMed Citation Articles by CAMERON, J. N. Articles by RANDALL, D. J.

Journal of Experimental Biology 57,673-680 (1972)
Published by Company of Biologists 1972

The Effect of Increased Ambient CO₂ on Arterial CO₂ Tension, CO₂ Content and pH in Rainbow Trout

JAMES N. CAMERON ¹ and DAVID J. RANDALL ¹

¹ Institute of Arctic Biology, University of Alaska, College Alaska 99701, Department of Zoology, University of British Columbia Vancouver 8, B.C., Canada

1. The effect of exposure of rainbow trout to high and low levels of environmental (water) CO₂ tension on blood CO₂ and pH was studied.

2. An increase in environmental CO₂ caused a rise in the arterial CO₂ tension (Pa_CO2), but the blood-to-water gradient (P_IPa) remained about the same.

3. Changes in arterial pH were small - about one-third of what would be predicted from the change in Pa_CO2, if plasma bicarbonate remained constant.

4. There was a corresponding increase in the total CO₂ content of the blood which involved an upward shift of the CO₂ dissociation curve, and readjustment of the buffering to maintain pH.

5. The results are consistent with the hypothesis that blood CO₂ and pH levels are regulated via a chloride-bicarbonate exchange mechanism, rather than by ventilation and diffusive washout of gaseous CO₂.

This article has been cited by other articles:

				D. J. McKenzie, M. Piccolella, A. Z. D. Valle, E. W. Taylor, C. L. Bolis, and J. F. Steffensen Tolerance of chronic hypercapnia by the European eel Anguilla anguilla J. Exp. Biol., May 15, 2003; 206(10): 1717 - 1726. [Abstract] [Full Text] [PDF]

				R. L. Ingermann, M. Holcomb, M. L. Robinson, and J. G. Cloud Carbon dioxide and pH affect sperm motility of white sturgeon (Acipenser transmontanus) J. Exp. Biol., September 15, 2002; 205(18): 2885 - 2890. [Abstract] [Full Text] [PDF]

				N. Whiteley, J. Scott, S. Breeze, and L McCann Effects of water salinity on acid-base balance in decapod crustaceans J. Exp. Biol., January 3, 2001; 204(5): 1003 - 1011. [Abstract] [PDF]

				S. Perry, R Fritsche, T. Hoagland, D. Duff, and K. Olson The control of blood pressure during external hypercapnia in the rainbow trout (Oncorhynchus mykiss) J. Exp. Biol., January 8, 1999; 202(16): 2177 - 2190. [Abstract] [PDF]