Pectoral fin beat frequency predicts oxygen consumption during spontaneous activity in a labriform swimming fish (Embiotoca lateralis) |
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Authors: | Christian Tudorache Anders D Jordan Jon C Svendsen Paolo Domenici G DeBoeck and John F Steffensen |
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Institution: | (1) Laboratory for Ecophysiology, Biochemistry and Toxicology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium;(2) Marine Biological Laboratory, University of Copenhagen, Strandpromenaden 5, 3000 Helsing?r, Denmark;(3) Department of Inland Fisheries, Danish Institute for Fisheries Research, 8600 Silkeborg, Denmark;(4) CNR-IAMC, Località Sa Mardini, 09027, Torregrande, Oristano, Italy |
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Abstract: | The objective of this study was to identify kinematic variables correlated with oxygen consumption during spontaneous labriform
swimming. Kinematic variables (swimming speed, change of speed, turning angle, turning rate, turning radius and pectoral fin
beat frequency) and oxygen consumption (MO2) of spontaneous swimming in Embiotoca lateralis were measured in a circular arena using video tracking and respirometry, respectively. The main variable influencing MO2 was pectoral fin beat frequency (r
2 = 0.71). No significant relationship was found between swimming speed and pectoral fin beat frequency. Complementary to other
methods within biotelemetry such as EMG it is suggested that such correlations of pectoral fin beat frequency may be used
to measure the energy requirements of labriform swimming fish such as E. lateralis in the field, but need to be taken with great caution since movement and oxygen consumption patterns are likely to be quite
different in field situation compared to a small lab tank. In addition, our methods could be useful to measure metabolic costs
of growth and development, or bioassays for possible toxicological effects on fish. |
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Keywords: | Embiotoca lateralis Energetics Labriform swimming Metabolism Oxygen consumption Striped surfperch Swimming performance |
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