Do prior diel thermal cycles influence the physiological response of Atlantic salmon ( Salmo salar) to subsequent heat stress?
We designed two environmentally relevant thermal cycling regimes using monitoring data from an Atlantic salmon (Salmo salar) river to determine whether exposure to prior diel cycles stimulated protective mechanisms (e.g., heat hardening) and (or) resulted in physiological and cellular stress. Wild f...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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crcansciencepubl:10.1139/cjfas-2016-0157 2024-09-15T17:56:07+00:00 Do prior diel thermal cycles influence the physiological response of Atlantic salmon ( Salmo salar) to subsequent heat stress? Tunnah, Louise Currie, Suzanne MacCormack, Tyson J. 2017 http://dx.doi.org/10.1139/cjfas-2016-0157 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2016-0157 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2016-0157 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 74, issue 1, page 127-139 ISSN 0706-652X 1205-7533 journal-article 2017 crcansciencepubl https://doi.org/10.1139/cjfas-2016-0157 2024-07-18T04:13:35Z We designed two environmentally relevant thermal cycling regimes using monitoring data from an Atlantic salmon (Salmo salar) river to determine whether exposure to prior diel cycles stimulated protective mechanisms (e.g., heat hardening) and (or) resulted in physiological and cellular stress. Wild fish were exposed to 3 days of diel cycling in the lab and then exposed to an acute thermal challenge near their upper reported critical temperature. We measured routine metabolic rate across the time course as well as indicators of physiological status (e.g., plasma glucose and osmolality) and cellular stress (e.g., heat shock protein 70). We observed that thermal cycling altered physiological and cellular responses, compared with an acute heat shock, but saw no differences between cycling regimes. Unique temperature regime and tissue-specific responses were observed in heat shock protein induction, metabolites, haematology, and osmotic indicators. Routine metabolic rate was not affected by the thermal cycling and increased according to Q 10 predictions. While we report unique physiological and cellular responses among all treatment groups, we did not observe a clear indication of a heat hardening response. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 74 1 127 139 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
We designed two environmentally relevant thermal cycling regimes using monitoring data from an Atlantic salmon (Salmo salar) river to determine whether exposure to prior diel cycles stimulated protective mechanisms (e.g., heat hardening) and (or) resulted in physiological and cellular stress. Wild fish were exposed to 3 days of diel cycling in the lab and then exposed to an acute thermal challenge near their upper reported critical temperature. We measured routine metabolic rate across the time course as well as indicators of physiological status (e.g., plasma glucose and osmolality) and cellular stress (e.g., heat shock protein 70). We observed that thermal cycling altered physiological and cellular responses, compared with an acute heat shock, but saw no differences between cycling regimes. Unique temperature regime and tissue-specific responses were observed in heat shock protein induction, metabolites, haematology, and osmotic indicators. Routine metabolic rate was not affected by the thermal cycling and increased according to Q 10 predictions. While we report unique physiological and cellular responses among all treatment groups, we did not observe a clear indication of a heat hardening response. |
format |
Article in Journal/Newspaper |
author |
Tunnah, Louise Currie, Suzanne MacCormack, Tyson J. |
spellingShingle |
Tunnah, Louise Currie, Suzanne MacCormack, Tyson J. Do prior diel thermal cycles influence the physiological response of Atlantic salmon ( Salmo salar) to subsequent heat stress? |
author_facet |
Tunnah, Louise Currie, Suzanne MacCormack, Tyson J. |
author_sort |
Tunnah, Louise |
title |
Do prior diel thermal cycles influence the physiological response of Atlantic salmon ( Salmo salar) to subsequent heat stress? |
title_short |
Do prior diel thermal cycles influence the physiological response of Atlantic salmon ( Salmo salar) to subsequent heat stress? |
title_full |
Do prior diel thermal cycles influence the physiological response of Atlantic salmon ( Salmo salar) to subsequent heat stress? |
title_fullStr |
Do prior diel thermal cycles influence the physiological response of Atlantic salmon ( Salmo salar) to subsequent heat stress? |
title_full_unstemmed |
Do prior diel thermal cycles influence the physiological response of Atlantic salmon ( Salmo salar) to subsequent heat stress? |
title_sort |
do prior diel thermal cycles influence the physiological response of atlantic salmon ( salmo salar) to subsequent heat stress? |
publisher |
Canadian Science Publishing |
publishDate |
2017 |
url |
http://dx.doi.org/10.1139/cjfas-2016-0157 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2016-0157 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2016-0157 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 74, issue 1, page 127-139 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2016-0157 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
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74 |
container_issue |
1 |
container_start_page |
127 |
op_container_end_page |
139 |
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1810432338692145152 |