Sudden exposure to warm water causes instant behavioural responses indicative of nociception or pain in Atlantic salmon
Thermal treatment has become the most used delousing method in salmonid aquaculture. However, concerns have been raised about it being painful for the fish. We studied the behavioural response of Atlantic salmon acclimated to 8 °C when transferred to temperatures in the range 0–38 °C. Exposure time...
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ftpubmed:oai:pubmedcentral.nih.gov:7386744 2023-05-15T15:31:19+02:00 Sudden exposure to warm water causes instant behavioural responses indicative of nociception or pain in Atlantic salmon Nilsson, Jonatan Moltumyr, Lene Madaro, Angelico Kristiansen, Tore Sigmund Gåsnes, Siri Kristine Mejdell, Cecilie Marie Gismervik, Kristine Stien, Lars Helge 2019-09-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7386744/ https://doi.org/10.1016/j.vas.2019.100076 en eng Elsevier http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7386744/ http://dx.doi.org/10.1016/j.vas.2019.100076 © 2019 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). CC-BY Vet Anim Sci Article Text 2019 ftpubmed https://doi.org/10.1016/j.vas.2019.100076 2020-08-02T00:36:48Z Thermal treatment has become the most used delousing method in salmonid aquaculture. However, concerns have been raised about it being painful for the fish. We studied the behavioural response of Atlantic salmon acclimated to 8 °C when transferred to temperatures in the range 0–38 °C. Exposure time was 5 min or until they reached the endpoint of losing equilibrium and laying on their side, a sign of imminent death. At temperatures below 28 °C, none of the fish reached endpoint within the 5-min maximum. At 28 °C four of five fish reached endpoint, and fish reached endpoint more rapidly as temperature increased further. Fish transferred to temperatures above 28 °C had higher swimming speed immediately after transfer and maintained a high swimming speed until just before loss of equilibrium. Their behaviour was from the start characterised by collisions into tank walls and head shaking. Just before loss of equilibrium they started breaking the surface of the water, swimming in a circle pattern and in some instances displayed a side-wise bending of their body. In other words, salmon transferred to temperatures above 28 °C showed instant behavioural responses indicative of nociception or pain. Text Atlantic salmon PubMed Central (PMC) Veterinary and Animal Science 8 100076 |
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Article Nilsson, Jonatan Moltumyr, Lene Madaro, Angelico Kristiansen, Tore Sigmund Gåsnes, Siri Kristine Mejdell, Cecilie Marie Gismervik, Kristine Stien, Lars Helge Sudden exposure to warm water causes instant behavioural responses indicative of nociception or pain in Atlantic salmon |
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Thermal treatment has become the most used delousing method in salmonid aquaculture. However, concerns have been raised about it being painful for the fish. We studied the behavioural response of Atlantic salmon acclimated to 8 °C when transferred to temperatures in the range 0–38 °C. Exposure time was 5 min or until they reached the endpoint of losing equilibrium and laying on their side, a sign of imminent death. At temperatures below 28 °C, none of the fish reached endpoint within the 5-min maximum. At 28 °C four of five fish reached endpoint, and fish reached endpoint more rapidly as temperature increased further. Fish transferred to temperatures above 28 °C had higher swimming speed immediately after transfer and maintained a high swimming speed until just before loss of equilibrium. Their behaviour was from the start characterised by collisions into tank walls and head shaking. Just before loss of equilibrium they started breaking the surface of the water, swimming in a circle pattern and in some instances displayed a side-wise bending of their body. In other words, salmon transferred to temperatures above 28 °C showed instant behavioural responses indicative of nociception or pain. |
format |
Text |
author |
Nilsson, Jonatan Moltumyr, Lene Madaro, Angelico Kristiansen, Tore Sigmund Gåsnes, Siri Kristine Mejdell, Cecilie Marie Gismervik, Kristine Stien, Lars Helge |
author_facet |
Nilsson, Jonatan Moltumyr, Lene Madaro, Angelico Kristiansen, Tore Sigmund Gåsnes, Siri Kristine Mejdell, Cecilie Marie Gismervik, Kristine Stien, Lars Helge |
author_sort |
Nilsson, Jonatan |
title |
Sudden exposure to warm water causes instant behavioural responses indicative of nociception or pain in Atlantic salmon |
title_short |
Sudden exposure to warm water causes instant behavioural responses indicative of nociception or pain in Atlantic salmon |
title_full |
Sudden exposure to warm water causes instant behavioural responses indicative of nociception or pain in Atlantic salmon |
title_fullStr |
Sudden exposure to warm water causes instant behavioural responses indicative of nociception or pain in Atlantic salmon |
title_full_unstemmed |
Sudden exposure to warm water causes instant behavioural responses indicative of nociception or pain in Atlantic salmon |
title_sort |
sudden exposure to warm water causes instant behavioural responses indicative of nociception or pain in atlantic salmon |
publisher |
Elsevier |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7386744/ https://doi.org/10.1016/j.vas.2019.100076 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Vet Anim Sci |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7386744/ http://dx.doi.org/10.1016/j.vas.2019.100076 |
op_rights |
© 2019 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.vas.2019.100076 |
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Veterinary and Animal Science |
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8 |
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100076 |
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1766361811171409920 |