Journal ArticleDOI
The adaptation of amphibian waste nitrogen excretion to dehydration.
TLDR
The rate of excretion of accumulated urea in Xenopus appeared to follow an exponential plot, indicating passive excretion, and a theory of the evolution of ureotelism in Amphibia is suggested.About:
This article is published in Comparative Biochemistry and Physiology.The article was published on 1961-11-01. It has received 94 citations till now. The article focuses on the topics: Urea & Excretion.read more
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Biochemical Adaptation to the Environment
TL;DR: It is proposed that adult poikilotherms may undergo a considerable degree of “biochemical restructuring” on a seasonal basis, and the factors which control this “restructuring,” and the rates at which the process occurs at high and low temperatures are topics for future investigation.
Journal ArticleDOI
Adaptations of the spadefoot toad Scaphiopus couchi, to desert environments
TL;DR: Field and laboratory data indicate that toads are capable of stroing fat and metabolizing it during hibernation, and stored, dilute bladder urine may be utilized by toads to replace deficits in body fluids.
Journal ArticleDOI
Osmoregulation and excretion
Erik Larsen,Lewis E. Deaton,Horst Onken,Michael P. O'Donnell,Martin Grosell,William H. Dantzler,Dirk Weihrauch +6 more
TL;DR: How knowledge in these areas of comparative physiology has expanded considerably during the last two decades is demonstrated, bridging seminal classical works with studies based on new approaches at all levels of anatomical and functional organization.
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Journal ArticleDOI
The ammonia and urea excretion of different species of Amphibia during their development and metamorphosis.
TL;DR: The results described in the present paper have been confirmed in every respect using crystalline material prepared by Westall's method, from the urine of rabbits in which porphyria had been induced by the administration of Sedormid.