Remote physiological monitoring provides unique insights on the cardiovascular performance and stress responses of freely swimming rainbow trout in aquaculture

Abstract Investigating the mechanisms that fish employ to maintain homeostasis in their everyday life requires measurements of physiological and behavioural responses in the field. With multivariate bio-loggers, we continuously measured gastrointestinal blood flow (GBF), heart rate, activity and bod...

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Autores principales:	Jeroen Brijs, Erik Sandblom, Michael Axelsson, Kristina Sundell, Henrik Sundh, Anders Kiessling, Charlotte Berg, Albin Gräns
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a99a06287b9245bdafceb20f875910bc
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spelling	oai:doaj.org-article:a99a06287b9245bdafceb20f875910bc2021-12-02T15:09:49ZRemote physiological monitoring provides unique insights on the cardiovascular performance and stress responses of freely swimming rainbow trout in aquaculture10.1038/s41598-019-45657-32045-2322https://doaj.org/article/a99a06287b9245bdafceb20f875910bc2019-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-45657-3https://doaj.org/toc/2045-2322Abstract Investigating the mechanisms that fish employ to maintain homeostasis in their everyday life requires measurements of physiological and behavioural responses in the field. With multivariate bio-loggers, we continuously measured gastrointestinal blood flow (GBF), heart rate, activity and body temperature in rainbow trout (Oncorhynchus mykiss) swimming freely amongst ~5000 conspecifics in a sea cage. Our findings clearly demonstrate that while both acute aquaculture-related stress and spontaneous activity resulted in transient reductions in GBF (i.e. reductions of up to 65%), recovery from stressful handling practices subsequently involved a substantial and prolonged gastrointestinal hyperemia far beyond the level observed prior to the stressor. The gastrointestinal hyperemia may be necessary to repair the damage to the gastrointestinal tract caused by acute stress. Furthermore, heart rate responses to acute stress or voluntary activity differed depending on the individual’s physiological state. Stressed fish (i.e. mean heart rates >70 beats min−1) exhibited a bradycardic response to acute stress or activity, whereas fish with mean heart rates <60 beats min−1 instead demonstrated strong tachycardic responses. Remote monitoring of physiological and behavioural variables using bio-loggers can provide unique insights into ‘real-life’ responses of animals, which can largely differ from the responses observed in confined laboratory settings.Jeroen BrijsErik SandblomMichael AxelssonKristina SundellHenrik SundhAnders KiesslingCharlotte BergAlbin GränsNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-12 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jeroen Brijs Erik Sandblom Michael Axelsson Kristina Sundell Henrik Sundh Anders Kiessling Charlotte Berg Albin Gräns Remote physiological monitoring provides unique insights on the cardiovascular performance and stress responses of freely swimming rainbow trout in aquaculture
description	Abstract Investigating the mechanisms that fish employ to maintain homeostasis in their everyday life requires measurements of physiological and behavioural responses in the field. With multivariate bio-loggers, we continuously measured gastrointestinal blood flow (GBF), heart rate, activity and body temperature in rainbow trout (Oncorhynchus mykiss) swimming freely amongst ~5000 conspecifics in a sea cage. Our findings clearly demonstrate that while both acute aquaculture-related stress and spontaneous activity resulted in transient reductions in GBF (i.e. reductions of up to 65%), recovery from stressful handling practices subsequently involved a substantial and prolonged gastrointestinal hyperemia far beyond the level observed prior to the stressor. The gastrointestinal hyperemia may be necessary to repair the damage to the gastrointestinal tract caused by acute stress. Furthermore, heart rate responses to acute stress or voluntary activity differed depending on the individual’s physiological state. Stressed fish (i.e. mean heart rates >70 beats min−1) exhibited a bradycardic response to acute stress or activity, whereas fish with mean heart rates <60 beats min−1 instead demonstrated strong tachycardic responses. Remote monitoring of physiological and behavioural variables using bio-loggers can provide unique insights into ‘real-life’ responses of animals, which can largely differ from the responses observed in confined laboratory settings.
format	article
author	Jeroen Brijs Erik Sandblom Michael Axelsson Kristina Sundell Henrik Sundh Anders Kiessling Charlotte Berg Albin Gräns
author_facet	Jeroen Brijs Erik Sandblom Michael Axelsson Kristina Sundell Henrik Sundh Anders Kiessling Charlotte Berg Albin Gräns
author_sort	Jeroen Brijs
title	Remote physiological monitoring provides unique insights on the cardiovascular performance and stress responses of freely swimming rainbow trout in aquaculture
title_short	Remote physiological monitoring provides unique insights on the cardiovascular performance and stress responses of freely swimming rainbow trout in aquaculture
title_full	Remote physiological monitoring provides unique insights on the cardiovascular performance and stress responses of freely swimming rainbow trout in aquaculture
title_fullStr	Remote physiological monitoring provides unique insights on the cardiovascular performance and stress responses of freely swimming rainbow trout in aquaculture
title_full_unstemmed	Remote physiological monitoring provides unique insights on the cardiovascular performance and stress responses of freely swimming rainbow trout in aquaculture
title_sort	remote physiological monitoring provides unique insights on the cardiovascular performance and stress responses of freely swimming rainbow trout in aquaculture
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/a99a06287b9245bdafceb20f875910bc
work_keys_str_mv	AT jeroenbrijs remotephysiologicalmonitoringprovidesuniqueinsightsonthecardiovascularperformanceandstressresponsesoffreelyswimmingrainbowtroutinaquaculture AT eriksandblom remotephysiologicalmonitoringprovidesuniqueinsightsonthecardiovascularperformanceandstressresponsesoffreelyswimmingrainbowtroutinaquaculture AT michaelaxelsson remotephysiologicalmonitoringprovidesuniqueinsightsonthecardiovascularperformanceandstressresponsesoffreelyswimmingrainbowtroutinaquaculture AT kristinasundell remotephysiologicalmonitoringprovidesuniqueinsightsonthecardiovascularperformanceandstressresponsesoffreelyswimmingrainbowtroutinaquaculture AT henriksundh remotephysiologicalmonitoringprovidesuniqueinsightsonthecardiovascularperformanceandstressresponsesoffreelyswimmingrainbowtroutinaquaculture AT anderskiessling remotephysiologicalmonitoringprovidesuniqueinsightsonthecardiovascularperformanceandstressresponsesoffreelyswimmingrainbowtroutinaquaculture AT charlotteberg remotephysiologicalmonitoringprovidesuniqueinsightsonthecardiovascularperformanceandstressresponsesoffreelyswimmingrainbowtroutinaquaculture AT albingrans remotephysiologicalmonitoringprovidesuniqueinsightsonthecardiovascularperformanceandstressresponsesoffreelyswimmingrainbowtroutinaquaculture
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Remote physiological monitoring provides unique insights on the cardiovascular performance and stress responses of freely swimming rainbow trout in aquaculture

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