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Thermal dependence of water and electrolyte excretion in two species of lizards

Authors
Journal
Comparative Biochemistry and Physiology
0010-406X
Publisher
Elsevier
Publication Date
Volume
23
Issue
1
Identifiers
DOI: 10.1016/0010-406x(67)90493-8

Abstract

Abstract 1. 1. Lizards with different preferred temperatures were water-loaded, and their ability to excrete excess water and conserve electrolytes was tested at several temperatures. 2. 2. Rates of water excretion were much less temperature dependent in lizards having a low preferred temperature, but were maximal at about 30–35°C in both species. 3. 3. Urinary sodium levels were minimal at temperatures near the respective preferred temperature of each species. 4. 4. Urinary potassium levels were low and apparently not temperature dependent over most of the range studied, but increased as lethal temperatures were approached.

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