Non‐invasive recording of heart rate and ventilation rate in rainbow trout during rest and swimming. Fish go wireless!

By J. Altimiras, E. Larsen. 2000

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Measuring metabolic rate in the field: the pros and cons of the doubly labelled water and heart rate methods (2004, result): “More recent studies on Rainbow Trout have not supported the conclusion of Stevens & Randall (1967) (Altimiras & Larsen 2000; Brodeur, Dixon & McKinley 2001) and ƒH changes with in Pike, Esox lucius (Armstrong 1986), Atlantic Salmon, Salmo salar (Lucas 1994) and Brown Trout Salmo trutta (Beaumont,…”
Fish cardiorespiratory physiology in an era of climate change (2009, background): “In addition, stress tends to increase the adrenergic tonus and decrease the cholinergic tonus, resulting in elevated heart rates for fish that are either insufficiently rested after surgery or not properly habituated to their holding conditions (Altimiras and Larsen 2000; Campbell et al. 2004).”
Emerging indicators of fish welfare in aquaculture (2021, methodology): “Heart rate data were validated with electrodes in the water, which record bioelectric potentials generated from the heart 173,174 , and the bio-loggers were used to record heart rate over a period of several weeks 45,172 .”
Stress Indicators in Fish (2016, methodology): “…a stopwatch from direct observation or video (White et al., 2008) Can be measured remotely by use of bioelectric sensors placed in water near fish (Altimiras and Larsen, 2000) Possible to telemeter opercular activity (either radio or acoustic) to estimate ventilation rate (Oswald, 1978) Ability…”