Nutritional and environmental impacts on skin and mucus condition in Atlantic salmon (Salmo salar L.)
The skin and associated mucus layer of Atlantic salmon constitutes its first line of defence against the aqueous environment. Through intensive farming, a range of stressors including both mechanical and environmental factors are known to have an impact on the skin condition of fish. Damaged skin ca...
Published in: | Journal of Fish Diseases |
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Main Author: | |
Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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The University of Bergen
2015
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Subjects: | |
Online Access: | https://hdl.handle.net/1956/10604 |
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Open Polar |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
topic |
Atlanterhavslaks Fiskefysiologi Fiskesykdommer Oppdrettslaks Epiteler Forstoffer |
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Atlanterhavslaks Fiskefysiologi Fiskesykdommer Oppdrettslaks Epiteler Forstoffer Jensen, Linda Beate Nutritional and environmental impacts on skin and mucus condition in Atlantic salmon (Salmo salar L.) |
topic_facet |
Atlanterhavslaks Fiskefysiologi Fiskesykdommer Oppdrettslaks Epiteler Forstoffer |
description |
The skin and associated mucus layer of Atlantic salmon constitutes its first line of defence against the aqueous environment. Through intensive farming, a range of stressors including both mechanical and environmental factors are known to have an impact on the skin condition of fish. Damaged skin can serve as a portal of entry for primary pathogens and secondary infections. Two of the current main problems in the salmon farming industry are skin related: ectoparasitism with sea lice and skin wounds of diverse origin, often related to extreme temperatures. Four experiments with salmon were conducted to investigate the response of skin and the epidermal mucus layer to challenges representative of normal farming conditions, and to assess the possibility to modulate the skin response through diet. The factors studied included water temperature change, sea lice infection and mechanical wound infliction. New methodologies were developed or existing methods optimised to assess the impact of these factors on the composition, structure and functionality of skin. Quantitative histology using digital image analysing, proteomics of mucus and transcriptomics of skin were all demonstrated to be valuable tools in defining differences between groups exposed to distinct treatments. The chemical composition of the skin was studied at 3 temperatures; 4°C, 10°C and 16°C. Increasing temperature resulted in higher level of protein and collagen related amino acids, while moisture level was reduced. Altering the dietary levels of minerals and vitamins also resulted in changes in their concentration in the skin, demonstrating dietary modulation of skin composition. The structure of the epidermis was also affected by temperature. Quantitative histology assessments showed that the epidermal thickness decreased from low to high temperature, whereas the epidermal area comprising mucous cells increased. Temperature also impacted on the skin transcriptome. A subtle increase in skin-mediated immunity was observed at low temperature, suggesting ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Jensen, Linda Beate |
author_facet |
Jensen, Linda Beate |
author_sort |
Jensen, Linda Beate |
title |
Nutritional and environmental impacts on skin and mucus condition in Atlantic salmon (Salmo salar L.) |
title_short |
Nutritional and environmental impacts on skin and mucus condition in Atlantic salmon (Salmo salar L.) |
title_full |
Nutritional and environmental impacts on skin and mucus condition in Atlantic salmon (Salmo salar L.) |
title_fullStr |
Nutritional and environmental impacts on skin and mucus condition in Atlantic salmon (Salmo salar L.) |
title_full_unstemmed |
Nutritional and environmental impacts on skin and mucus condition in Atlantic salmon (Salmo salar L.) |
title_sort |
nutritional and environmental impacts on skin and mucus condition in atlantic salmon (salmo salar l.) |
publisher |
The University of Bergen |
publishDate |
2015 |
url |
https://hdl.handle.net/1956/10604 |
genre |
Atlanterhavslaks Atlantic salmon Salmo salar |
genre_facet |
Atlanterhavslaks Atlantic salmon Salmo salar |
op_relation |
Paper I: Linda B. Jensen, Sebastian Boltana, Alex Obach, Charles McGurk, Rune Waagbø and Simon MacKenzie. 2014. Investigating the underlying mechanisms of temperature related skin diseases in Atlantic salmon, Salmo salar L.: as measured by quantitative histology, skin transcriptomics and composition. Journal of Fish Diseases, 38:977-992. The article is not available in BORA due to publisher restrictions. The published version is available at: http://dx.doi.org/10.1111/jfd.12314 Paper II: Linda B. Jensen, Thomas Wahli, Charles McGurk, Tommy Berger Eriksen, Alex Obach, Rune Waagbø, Ana Handler, Carolina Tafalla. 2015. Effect of temperature and diet on wound healing in Atlantic salmon (Salmo salar L.). Fish Physiology and Biochemistry, 41:1527-1543. The article is not available in BORA due to publisher restrictions. The published version is available at: http://dx.doi.org/10.1007/s10695-015-0105-2 Paper III: Fiona Provan, Linda B. Jensen, Kai Erik Uleberg, Eivind Larssen, Tarja Rajalahti, Julia Mullins and Alex Obach. 2013. Proteomic analysis of epidermal mucus from sea lice infected Atlantic salmon (Salmo salar L.). Journal of Fish Diseases, 36:311- 321. The article is not available in BORA due to publisher restrictions. The published version is available at: http://dx.doi.org/10.1111/jfd.12064 Paper IV: Linda B. Jensen, Fiona Provan, Eivind Larssen, James E. Bron and Alex Obach. 2015. Reducing sea lice (Lepeophtheirus salmonis) infestation of farmed Atlantic salmon (Salmo salar L.) through functional feeds. Aquaculture Nutrition, 21:983–993. The article is not available in BORA due to publisher restrictions. The published version is available at: http://dx.doi.org/10.1111/anu.12222 https://hdl.handle.net/1956/10604 cristin:1277976 |
op_rights |
Copyright the author. All rights reserved |
op_doi |
https://doi.org/10.1111/jfd.1231410.1007/s10695-015-0105-210.1111/jfd.1206410.1111/anu.12222 |
container_title |
Journal of Fish Diseases |
container_volume |
38 |
container_issue |
11 |
container_start_page |
977 |
op_container_end_page |
992 |
_version_ |
1766356795644706816 |
spelling |
ftunivbergen:oai:bora.uib.no:1956/10604 2023-05-15T15:26:17+02:00 Nutritional and environmental impacts on skin and mucus condition in Atlantic salmon (Salmo salar L.) Jensen, Linda Beate 2015-10-09 application/pdf https://hdl.handle.net/1956/10604 eng eng The University of Bergen Paper I: Linda B. Jensen, Sebastian Boltana, Alex Obach, Charles McGurk, Rune Waagbø and Simon MacKenzie. 2014. Investigating the underlying mechanisms of temperature related skin diseases in Atlantic salmon, Salmo salar L.: as measured by quantitative histology, skin transcriptomics and composition. Journal of Fish Diseases, 38:977-992. The article is not available in BORA due to publisher restrictions. The published version is available at: http://dx.doi.org/10.1111/jfd.12314 Paper II: Linda B. Jensen, Thomas Wahli, Charles McGurk, Tommy Berger Eriksen, Alex Obach, Rune Waagbø, Ana Handler, Carolina Tafalla. 2015. Effect of temperature and diet on wound healing in Atlantic salmon (Salmo salar L.). Fish Physiology and Biochemistry, 41:1527-1543. The article is not available in BORA due to publisher restrictions. The published version is available at: http://dx.doi.org/10.1007/s10695-015-0105-2 Paper III: Fiona Provan, Linda B. Jensen, Kai Erik Uleberg, Eivind Larssen, Tarja Rajalahti, Julia Mullins and Alex Obach. 2013. Proteomic analysis of epidermal mucus from sea lice infected Atlantic salmon (Salmo salar L.). Journal of Fish Diseases, 36:311- 321. The article is not available in BORA due to publisher restrictions. The published version is available at: http://dx.doi.org/10.1111/jfd.12064 Paper IV: Linda B. Jensen, Fiona Provan, Eivind Larssen, James E. Bron and Alex Obach. 2015. Reducing sea lice (Lepeophtheirus salmonis) infestation of farmed Atlantic salmon (Salmo salar L.) through functional feeds. Aquaculture Nutrition, 21:983–993. The article is not available in BORA due to publisher restrictions. The published version is available at: http://dx.doi.org/10.1111/anu.12222 https://hdl.handle.net/1956/10604 cristin:1277976 Copyright the author. All rights reserved Atlanterhavslaks Fiskefysiologi Fiskesykdommer Oppdrettslaks Epiteler Forstoffer Doctoral thesis 2015 ftunivbergen https://doi.org/10.1111/jfd.1231410.1007/s10695-015-0105-210.1111/jfd.1206410.1111/anu.12222 2023-03-14T17:43:50Z The skin and associated mucus layer of Atlantic salmon constitutes its first line of defence against the aqueous environment. Through intensive farming, a range of stressors including both mechanical and environmental factors are known to have an impact on the skin condition of fish. Damaged skin can serve as a portal of entry for primary pathogens and secondary infections. Two of the current main problems in the salmon farming industry are skin related: ectoparasitism with sea lice and skin wounds of diverse origin, often related to extreme temperatures. Four experiments with salmon were conducted to investigate the response of skin and the epidermal mucus layer to challenges representative of normal farming conditions, and to assess the possibility to modulate the skin response through diet. The factors studied included water temperature change, sea lice infection and mechanical wound infliction. New methodologies were developed or existing methods optimised to assess the impact of these factors on the composition, structure and functionality of skin. Quantitative histology using digital image analysing, proteomics of mucus and transcriptomics of skin were all demonstrated to be valuable tools in defining differences between groups exposed to distinct treatments. The chemical composition of the skin was studied at 3 temperatures; 4°C, 10°C and 16°C. Increasing temperature resulted in higher level of protein and collagen related amino acids, while moisture level was reduced. Altering the dietary levels of minerals and vitamins also resulted in changes in their concentration in the skin, demonstrating dietary modulation of skin composition. The structure of the epidermis was also affected by temperature. Quantitative histology assessments showed that the epidermal thickness decreased from low to high temperature, whereas the epidermal area comprising mucous cells increased. Temperature also impacted on the skin transcriptome. A subtle increase in skin-mediated immunity was observed at low temperature, suggesting ... Doctoral or Postdoctoral Thesis Atlanterhavslaks Atlantic salmon Salmo salar University of Bergen: Bergen Open Research Archive (BORA-UiB) Journal of Fish Diseases 38 11 977 992 |