Thermal Modulation of Monoamine Levels Influence Fish Stress and Welfare

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dc.contributor.authorSanhueza, Nataly
dc.contributor.authorDonoso, Andrea
dc.contributor.authorAguilar, Andrea
dc.contributor.authorFarlora, Rodolfo
dc.contributor.authorCarnicero, Beatriz
dc.contributor.authorMíguez, Jesús Manuel
dc.contributor.authorTort, Lluis
dc.contributor.authorValdés, Juan Antonio
dc.contributor.authorBoltana, Sebastián
dc.date.accessioned2022-06-20T12:51:49Z
dc.date.available2022-06-20T12:51:49Z
dc.date.issued2018-12
dc.descriptionIndexación Scopuses
dc.description.abstractFish are ectotherm organisms that move through different thermal zones according to their physiological requirements and environmental availability, a behavior known as thermoregulation. Thermoregulation in ectothermic animals is influenced by their ability to effectively respond to thermal variations. While it is known that ectotherms are affected by thermal changes, it remains unknown how physiological and/or metabolic traits are impacted by modifications in the thermal environment. In captivity (land-based infrastructures or nets located in the open sea), fish are often restricted to spatially constant temperature conditions within the containment unit and cannot choose among different thermal conditions for thermoregulation. In order to understand how spatial variation of temperature may affect fish welfare and stress, we designed an experiment using either restricted or wide thermal ranges, looking for changes at hormonal and molecular levels. Also, thermal variability impact on fish behavior was measured. Our results showed that in Atlantic salmon (Salmo salar), a wide thermal range (ΔT 6.8°C) was associated with significant increases in monoamines hormone levels and in the expression of clock genes. Aggressive and territoriality behavior decreased, positively affecting parameters linked to welfare, such as growth and fin damage. In contrast, a restricted thermal range (ΔT 1.4°C) showed the opposite pattern in all the analyzed parameters, therefore, having detrimental effects on welfare. In conclusion, our results highlight the key role of thermal range amplitude on fish behavior and on interactions with major metabolism-regulating processes, such as hormone performance and molecular regulatory mechanisms that have positive effects on the welfare. © Copyright © 2018 Sanhueza, Donoso, Aguilar, Farlora, Carnicero, Míguez, Tort, Valdes and Boltana.es
dc.description.urihttps://www.frontiersin.org/articles/10.3389/fendo.2018.00717/full
dc.identifier.citationFrontiers in Endocrinology Volume 93 December 2018 Article number 717es
dc.identifier.doi10.3389/fendo.2018.00717
dc.identifier.issn16642392
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/22904
dc.language.isoenes
dc.publisherFrontiers Media S.A.es
dc.rights.licenseCC BY 4.0
dc.subjectCortisol Receptorses
dc.subjectHydrocortisonees
dc.subjectSea Breames
dc.subjectBehaviores
dc.subjectConfinementes
dc.subjectFish husbandryes
dc.subjectHPI-axises
dc.subjectThermoregulationes
dc.titleThermal Modulation of Monoamine Levels Influence Fish Stress and Welfarees
dc.typeArtículoes
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