Influences of stress phenotype, nutrition and genetic background on the upper thermal tolerance of Atlantic salmon (Salmo salar) ...
Anthropogenic climate change threatens the sustainability of the Atlantic salmon (Salmo salar) aquaculture industry. This thesis studied the effects of three factors [i) stress phenotype; ii) supplemental dietary cholesterol; and iii) family/genetic background] on the performance of farmed Atlantic...
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Memorial University of Newfoundland
2024
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Online Access: | https://dx.doi.org/10.48336/s2n4-cn65 https://research.library.mun.ca/16293/ |
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ftdatacite:10.48336/s2n4-cn65 2024-04-28T08:13:08+00:00 Influences of stress phenotype, nutrition and genetic background on the upper thermal tolerance of Atlantic salmon (Salmo salar) ... Ignatz, Eric Hans 2024 https://dx.doi.org/10.48336/s2n4-cn65 https://research.library.mun.ca/16293/ en eng Memorial University of Newfoundland article-journal Text ScholarlyArticle 2024 ftdatacite https://doi.org/10.48336/s2n4-cn65 2024-04-02T10:12:53Z Anthropogenic climate change threatens the sustainability of the Atlantic salmon (Salmo salar) aquaculture industry. This thesis studied the effects of three factors [i) stress phenotype; ii) supplemental dietary cholesterol; and iii) family/genetic background] on the performance of farmed Atlantic salmon when exposed to an incremental thermal maximum (ITMax, +0.2°C day⁻¹) challenge that mimicked natural summer sea-cage conditions. No differences in the ITMax of male Atlantic salmon characterized as either low (LR) or high stress responders (HR) based on measurements of post-stress cortisol levels at 9°C was found, and interestingly, stress phenotypes were no longer distinguishable from one another when post-stress cortisol levels were analyzed at elevated temperatures. However, some differences in gene expression were found between LR and HR fish in response to bacterial immune stimulation. Notably, HR salmon mounted a greater (p < 0.05) innate antibacterial immune response than LR salmon at 20°C, ... Text Atlantic salmon Salmo salar DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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English |
description |
Anthropogenic climate change threatens the sustainability of the Atlantic salmon (Salmo salar) aquaculture industry. This thesis studied the effects of three factors [i) stress phenotype; ii) supplemental dietary cholesterol; and iii) family/genetic background] on the performance of farmed Atlantic salmon when exposed to an incremental thermal maximum (ITMax, +0.2°C day⁻¹) challenge that mimicked natural summer sea-cage conditions. No differences in the ITMax of male Atlantic salmon characterized as either low (LR) or high stress responders (HR) based on measurements of post-stress cortisol levels at 9°C was found, and interestingly, stress phenotypes were no longer distinguishable from one another when post-stress cortisol levels were analyzed at elevated temperatures. However, some differences in gene expression were found between LR and HR fish in response to bacterial immune stimulation. Notably, HR salmon mounted a greater (p < 0.05) innate antibacterial immune response than LR salmon at 20°C, ... |
format |
Text |
author |
Ignatz, Eric Hans |
spellingShingle |
Ignatz, Eric Hans Influences of stress phenotype, nutrition and genetic background on the upper thermal tolerance of Atlantic salmon (Salmo salar) ... |
author_facet |
Ignatz, Eric Hans |
author_sort |
Ignatz, Eric Hans |
title |
Influences of stress phenotype, nutrition and genetic background on the upper thermal tolerance of Atlantic salmon (Salmo salar) ... |
title_short |
Influences of stress phenotype, nutrition and genetic background on the upper thermal tolerance of Atlantic salmon (Salmo salar) ... |
title_full |
Influences of stress phenotype, nutrition and genetic background on the upper thermal tolerance of Atlantic salmon (Salmo salar) ... |
title_fullStr |
Influences of stress phenotype, nutrition and genetic background on the upper thermal tolerance of Atlantic salmon (Salmo salar) ... |
title_full_unstemmed |
Influences of stress phenotype, nutrition and genetic background on the upper thermal tolerance of Atlantic salmon (Salmo salar) ... |
title_sort |
influences of stress phenotype, nutrition and genetic background on the upper thermal tolerance of atlantic salmon (salmo salar) ... |
publisher |
Memorial University of Newfoundland |
publishDate |
2024 |
url |
https://dx.doi.org/10.48336/s2n4-cn65 https://research.library.mun.ca/16293/ |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_doi |
https://doi.org/10.48336/s2n4-cn65 |
_version_ |
1797579763304366080 |