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The Capital Region of Denmark - a part of Copenhagen University Hospital
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Sources of variation in oxygen consumption of aquatic animals demonstrated by simulated constant oxygen consumption and respirometers of different sizes

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  1. Plasma osmolality and oxygen consumption of perch Perca fluviatilis in response to different salinities and temperatures

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  2. Design and setup of intermittent-flow respirometry system for aquatic organisms

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  3. Effect of closed v. intermittent-flow respirometry on hypoxia tolerance in the shiner perch Cymatogaster aggregata

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  1. Sepsis-related Organ Failure Assessment Score is a strong predictor of survival in acute-on-chronic liver failure

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  2. Mikrobiomet ved kronisk leversygdom

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As intermittent-flow respirometry has become a common method for the determination of resting metabolism or standard metabolic rate (SMR), this study investigated how much of the variability seen in the experiments was due to measurement error. Experiments simulated different constant oxygen consumption rates (M˙O2) of a fish, by continuously injecting anoxic water into a respirometer, altering the injection rate to correct for the washout error. The effect of respirometer-to-fish volume ratio (RFR) on SMR measurement and variability was also investigated, using the simulated constant M˙O2 and the M˙O2 of seven roach Rutilus rutilus in respirometers of two different sizes. The results show that higher RFR increases measurement variability but does not change the mean SMR established using a double Gaussian fit. Further, the study demonstrates that the variation observed when determining oxygen consumption rates of fishes in systems with reasonable RFRs mainly comes from the animal, not from the measuring equipment.

Original languageEnglish
JournalJournal of Fish Biology
Volume88
Issue number1
Pages (from-to)51-64
Number of pages14
ISSN0022-1112
DOIs
Publication statusPublished - 1 Jan 2016

    Research areas

  • Aquatic respirometry, Intermittent-flow respirometry, Measurement error

ID: 55515438