The Herpetological Journal
The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.
ISSN 0268-0130
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pdf 01. Aquatic oxygen conformity in the Mexican axolotl, Ambystoma mexicanum
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pp.1-4
Authors: H.I. Griffiths And D.H. Thomas
Abstract: The Mexican axolotl, Ambystoma mexicanum is an aquatic-phase oxygen conformer with a close correlation between rates of aquatic oxygen consumption and aquatic oxygen tension. Rates of oxygen consumption at normoxic oxygen tensions were 1 8.2µ1 02.g·1.h-1 at 20°C and 1 3.8µ.I 02.g-1.h-1 at 30°C. Air-breathing (i.e. rising to the water surface to gulp air) increases in hypoxia, associated with a decrease in gill ventilatory movements. Therefore, oxygen compensation during aquatic hypoxia appears to occur in the aerial phase, whilst aquatic gas-exchange surfaces show little ability to compensate for changes in ambient oxygen tension.
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