The ventilatory and acid-base physiology of the toad, Bufo marinus, during exposure to environmental hyperoxia.
Bufo marinus which were exposed to a step increase of 330-350 torr O2 for a 20 h period ceased lung ventilations and buccal movements were markedly decreased. Toads which were sitting in water did not show elevations in PaCO2 or a depressed pHe but animals which were dehydrated for a 24 h period prior to high O2 exposure developed a mild acidosis, which, typical of most amphibian species, was uncompensated.
D000136:Acid-Base Equilibrium; D000818:Animals; D002024:Bufo marinus / Q000502:physiology*; D003681:Dehydration / Q000503:physiopathology; D010100:Oxygen / Q000494:pharmacology*; D012119:Respiration
D010100:Oxygen