Periodicities and transient shifts in anuran (Xenopus laevis, Rana clamitans) oxygen consumption revealed with flow-through respirometry.
1. A custom-designed, computer-controlled, flow-through respirometry system was used to monitor oxygen consumption in aquatic anurans: Xenopus laevis metamorphs and larval Rana clamitans. 2. There was no evidence that animals were stressed in the flow-through respirometer; oxygen consumption rates in static vs open mode fell within the same range and animals were quiescent in the chambers. 3. Diurnal periodicity was pronounced in X. laevis: both mean rates and variability of oxygen consumption were higher during scotophase, although individual differences in the timing of peaks were pronounced. 4. A transient peak in metabolism following introduction of ethanol, with subsequent recovery, was monitored for X. laevis.
Abel
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Department of Biological Sciences, University of Wisconsin-Milwaukee.
Seale
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Boraas
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D000818:Animals; D015992:Body Mass Index; D003198:Computer Simulation; D007700:Kinetics; D010101:Oxygen Consumption / Q000502:physiology*; D011898:Ranidae / Q000378:metabolism*; D014982:Xenopus laevis / Q000378:metabolism*