Acid-base balance in plasmatic, pericardial and peritoneal fluids in 2 species of amphibians.
The carbonic acid-base balance and the concentrations of Na and Cl were studied in 3 fluids, plasmatic, pericardial and peritoneal, sampled from 2 species of amphibians: Pleurodeles waltl and Xenopus laevis. In Pleurodeles the pericardial and peritoneal fluids are in a state of marked metabolic alkalosis, the carbonate alkalinity being up to 10 times higher in the serosal fluids than in the plasma, whereas PCO2's are very close in the 3 fluids. The Cl concentration is markedly lower in the serosal fluids than in the plasma. In Xenopus, the metabolic alkalosis of the serosal fluids also exists, but to a much lower extent than in Pleurodeles. These observations lead to further researches in the field of morphometry, physicochemistry and physiology.
Dejours
P
P
Centre d'écologie et de physiologie énergétiques, UPR 9010 CNRS, Strasbourg, France.
Armand
J
J
D000136:Acid-Base Equilibrium; D000818:Animals; D001202:Ascitic Fluid; D001826:Body Fluids / Q000502:physiology*; D010496:Pericardium / Q000502:physiology*; D010949:Plasma / Q000502:physiology*; D010999:Pleurodeles; D014882:Water-Electrolyte Balance; D014982:Xenopus laevis