Gas exchange in fish gills with parallel inhomogeneities

Respiration Physiology
H Malte, R E Weber

Abstract

Using a mathematical model, the effects of water and blood flow inequality on gas exchange in the fish gill were investigated. The results show that O2 exchange is more sensitive to flow inequalities than CO2 exchange. Oxygen exchange is most sensitive to blood flow inequality, whereas carbon dioxide exchange is equally sensitive to inequalities in water and blood flow. Furthermore, it is shown that the effects of flow inequalities cannot be abolished by matching the two flows exactly. The results suggest that the greatest potential for regulation of gas exchange lies on the blood side of the exchanger, and that adjustments in flow distributions to maintain homeostasis in oxygen exchange in the face of changing environmental conditions and/or changing organismic demands, most likely will be accompanied by a change in the acid-base status of the animal.

Citations

Jan 1, 1984·Comparative Biochemistry and Physiology. A, Comparative Physiology·P H LucchiariM Bacila
Apr 1, 1992·Comparative Biochemistry and Physiology. Comparative Physiology·I KakutaS Murachi
Oct 26, 2002·Marine Pollution Bulletin·Rudolf S S Wu
Mar 20, 2001·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·J Püper
Jun 28, 2013·The Journal of Experimental Biology·James A Strother

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