...Morten Busk; Erik Hviid Larsen; Frank B. Jensen ABSTRACT Tadpoles of Rana catesbeiana were exposed to different levels of environmental hypercapnia. The acid–base regulatory response differed from that in adult amphibians in showing a high degree of pH compensation in the extracellular fluid (65–85...

... outweigh the benefit of rapid pH compensation. The responses of liver to hypercapnia have not been studied previously, and the results presented here do not permit conclusions about the need for compensation specific to the liver. However, the presence of high concentrations of carbonic anhydrase...

...D. P. Toews; D. F. Stiffler ABSTRACT Toads ( Bufo marinus L.) and bullfrogs ( Rana catesbeiana Shaw) were subjected to a series of 24 h step increases in aerial CO 2 (2, 4, 6 and 8%) to assess the degree of extracellular pH compensation at each CO 2 level and to ascertain the importance...

... difference, presumably brought about by pulmonary hyperventilation. The predominant contributor to extracellular pH compensation, however, was a net gain of bicarbonate from the environment, mainly facilitated by ammonia excretion. Bicarbonate originating from the environment was accumulated in the body...

..., Denmark. 12 12 1985 © 1986 by Company of Biologists 1986 acid-base regulation bicarbonate threshold hypercapnia lizards pH compensation Reptilia Several studies have reported that reptiles may regulate their arterial acid–base status by adjustment of via changes...

... of the different processes observed. 4 11 1985 © 1986 by Company of Biologists 1986 environmental hypoxia recovery anaerobic metabolism phospho-L-arginine intracellular pH pH compensation acid-base regulation Sipunculus nudus Restoration of aerobic homeostasis after exposure...

... in these animals. * Present address: Department of Biology, Georgia Southern College, Statesboro, Georgia 30460 U.S.A. 7 6 1983 © 1984 by Company of Biologists 1984 Acid-base regulation Cyprinus carpio ammonia elimination hypercapnia ion transfer pH compensation...