PT  - JOURNAL ARTICLE
AU  - CAMERON, JAMES N.
AU  - POLHEMUS, JOHN A.
TI  - Theory of CO<sub>2</sub> Exchange in Trout Gills
DP  - 1974 Feb 01
TA  - Journal of Experimental Biology
PG  - 183--194
VI  - 60
IP  - 1
4099  - http://jeb.biologists.org/content/60/1/183.short
4100  - http://jeb.biologists.org/content/60/1/183.full
SO  - J. Exp. Biol.1974 Feb 01; 60
AB  - 1. A computer simulation of countercurrent CO2 exchange in fish gills was constructed to examine effects of variations in blood and water flow rates. 2. CO2 output was sensitive to both blood and water flow rates, contrary to experimental data. 3. Various explanations of the contradiction are discussed, including patterns of gill perfusion and possible shunting of blood. 4. A simplified version of the model was also used to demonstrate extreme sensitivity of CO2 efflux to variations of the residence time of blood in the gills. 5. Data from the literature on reaction rate constants for the CO2/carbonate/ bicarbonate system are summarized, and the importance of some of these reactions is examined. Supported in part by National Science Foundation Grant GB-31782 to J.N.C. and by funds from the Institute of Arctic Biology.