ECG augmented pulse oximetry in Atlantic salmon (Salmo salar)—A pilot study

Svendsen, Erik; Føre, Martin; Randeberg, Lise Lyngsnes; Olsen, Rolf Erik; Finstad, Bengt; Remen, Mette; Bloecher, Nina; Alfredsen, Jo Arve

doi:10.1016/j.compag.2023.108081

Cited by 4 publications

(1 citation statement)

References 35 publications

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“…In addition to acceleration, loggers can measure heart rate, although the size of the logger with the combined sensor allows use only on larger fish (>400 g), and the loggers need to be retrieved for the purpose of data collection. On an experimental scale, sensors have been developed and applied to measure respiration [ 25 ], blood glucose [ 26 , 27 ], and to calculate blood oxygen saturation [ 28 ]. Collection of such physiological parameters allows mapping of the energy economy of free-swimming fish, which could help with filling biological knowledge gaps, determining the impacts of climate change and contributing to precision farming.…”

Section: Introductionmentioning

confidence: 99%

Heart Rate and Acceleration Dynamics during Swim-Fitness and Stress Challenge Tests in Yellowtail Kingfish (Seriola lalandi)

Palstra,

Abbink,

Agbeti

et al. 2024

Biology

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The yellowtail kingfish is a highly active and fast-growing marine fish with promising potential for aquaculture. In this study, essential insights were gained into the energy economy of this species by heart rate and acceleration logging during a swim-fitness test and a subsequent stress challenge test. Oxygen consumption values of the 600–800 g fish, when swimming in the range of 0.2 up to 1 m·s−1, were high—between 550 and 800 mg·kg−1·h−1—and the heart rate values—up to 228 bpm—were even among the highest ever measured for fishes. When swimming at these increasing speeds, their heart rate increased from 126 up to 162 bpm, and acceleration increased from 11 up to 26 milli-g. When exposed to four sequential steps of increasing stress load, the decreasing peaks of acceleration (baseline values of 12 to peaks of 26, 19 and 15 milli-g) indicated anticipatory behavior, but the heart rate increases (110 up to 138–144 bpm) remained similar. During the fourth step, when fish were also chased, peaking values of 186 bpm and 44 milli-g were measured. Oxygen consumption and heart rate increased with swimming speed and was well reflected by increases in tail beat and head width frequencies. Only when swimming steadily near the optimal swimming speed were these parameters strongly correlated.

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Section: Introductionmentioning

confidence: 99%

Heart Rate and Acceleration Dynamics during Swim-Fitness and Stress Challenge Tests in Yellowtail Kingfish (Seriola lalandi)

Palstra,

Abbink,

Agbeti

et al. 2024

Biology

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Microscopic photoplethysmography‐based evaluation of cardiotoxicity in whitefish larvae induced by acute exposure to cadmium and phenol

Machikhin,

Guryleva,

Chakraborty

et al. 2024

Journal of Biophotonics

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Toxic environmental pollutants pose a health risk for both humans and animals. Accumulation of industrial contaminants in freshwater fish may become a significant threat to biodiversity. Comprehensive monitoring of the impact of environmental stressors on fish functional systems is important and use of non‐invasive tools that can detect the presence of these toxicants in vivo is desirable. The blood circulatory system, by virtue of its sensitivity to the external stimuli, could be an informative indicator of chemical exposure. In this study, microscopic photoplethysmography‐based approach was used to investigate the cardiac activity in broad whitefish larvae (Coregonus nasus) under acute exposure to cadmium and phenol. We identified contamination‐induced abnormalities in the rhythms of the ventricle and atrium. Our results allow introducing additional endpoints to evaluate the cardiac dysfunction in fish larvae and contribute to the non‐invasive evaluation of the toxic effects of industrial pollutants on bioaccumulation and aquatic life.

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Assessment of activity and heart rate as indicators for acute stress in Atlantic salmon

Bloecher,

Hedger,

Finstad

et al. 2024

Aquacult Int

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The aim of this study was to assess whether activity and heart rate sensor implants can be used to measure stress and thus estimate one important welfare indicator for fish in aquaculture pens, and if such measurements correlate to physiological factors measured through blood sampling. The experiment consisted of two parts: i) a bio-logger study where implanted sensors were used to monitor activity and heart rates for fish undergoing stress (crowding); and ii) an analysis of blood constituents (cortisol, glucose, lactate, and chloride) of a second group of fish undergoing the same treatment. We found that activity measurements can be used to track high-impact stress events but may not be suitable to discern possibly nuanced reactions to stress impacts of lower magnitude. While heart rate was measured reliably, e.g., in showing clear circadian rhythms, it was no credible proxy for predicting stress in this study. Our results thus underline challenges observed in previous work around the use of heart rate as stress indicator, and imply that the translation of its meaning into a proxy for stress needs further work. Although tag-based monitoring of stress is not without its difficulties, studies such as this provide a wealth of information on salmon behaviour and physiology, and the links between these.

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ECG augmented pulse oximetry in Atlantic salmon (Salmo salar)—A pilot study

Cited by 4 publications

References 35 publications

Heart Rate and Acceleration Dynamics during Swim-Fitness and Stress Challenge Tests in Yellowtail Kingfish (Seriola lalandi)

Heart Rate and Acceleration Dynamics during Swim-Fitness and Stress Challenge Tests in Yellowtail Kingfish (Seriola lalandi)

Microscopic photoplethysmography‐based evaluation of cardiotoxicity in whitefish larvae induced by acute exposure to cadmium and phenol

Assessment of activity and heart rate as indicators for acute stress in Atlantic salmon

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