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Journal of Experimental Biology 35,677-684 (1958)
Published by Company of Biologists 1958

Comparison of Dehydration and Hydration of two Genera of Frogs (Heleioporus and Neobatrachus) That Live in Areas of Varying Aridity

P. J. BENTLEY ¹, A. K. LEE ², and A. R. MAIN ³

¹ Physiology and Zoology Departments, The University of Western Australia; Physiology Department, University of Western Australia
² Physiology and Zoology Departments, The University of Western Australia; Department of Zoology, University of California Los Angeles
³ Physiology and Zoology Departments, The University of Western Australia; Zoology Department, University of Western Australia

1. Ability to take up water in response to dehydration and injection of posterior pituitary extract was measured in two genera of frogs, Heleioporus and Neobatrachus, that live in areas of varying aridity in south-west Australia.

2. Species of Neobatrachus from dry areas took up water more rapidly than those from less dry ones. No such correlation could be seen in the species of Heleioporus.

3. No differences could be seen in the ability of any of the animals to withstand desiccation.

4. These findings are discussed in relation to the animals' behaviour in its natural environment.

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