Transcriptomic comparison of communally reared wild, domesticated and hybrid Atlantic salmon fry under stress and control conditions
Background Domestication is the process by which organisms become adapted to the human-controlled environment. Since the selection pressures that act upon cultured and natural populations differ, adaptations that favour life in the domesticated environment are unlikely to be advantageous in the wild...
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Online Access: | https://hdl.handle.net/11250/2730266 https://doi.org/10.1186/s12863-020-00858-y |
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ftunivbergen:oai:bora.uib.no:11250/2730266 2023-05-15T15:31:04+02:00 Transcriptomic comparison of communally reared wild, domesticated and hybrid Atlantic salmon fry under stress and control conditions Bicskei, Beatrix Taggart, John B. Bron, James E. Glover, Kevin 2020 application/pdf https://hdl.handle.net/11250/2730266 https://doi.org/10.1186/s12863-020-00858-y eng eng BMC urn:issn:1471-2156 https://hdl.handle.net/11250/2730266 https://doi.org/10.1186/s12863-020-00858-y cristin:1821336 BMC Genetics. 2020, 21, 57. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright The Author(s). 2020 57 BMC Genetics 21:57 21 Journal article Peer reviewed 2020 ftunivbergen https://doi.org/10.1186/s12863-020-00858-y 2023-03-14T17:44:50Z Background Domestication is the process by which organisms become adapted to the human-controlled environment. Since the selection pressures that act upon cultured and natural populations differ, adaptations that favour life in the domesticated environment are unlikely to be advantageous in the wild. Elucidation of the differences between wild and domesticated Atlantic salmon may provide insights into some of the genomic changes occurring during domestication, and, help to predict the evolutionary consequences of farmed salmon escapees interbreeding with wild conspecifics. In this study the transcriptome of the offspring of wild and domesticated Atlantic salmon were compared using a common-garden experiment under standard hatchery conditions and in response to an applied crowding stressor. Results Transcriptomic differences between wild and domesticated crosses were largely consistent between the control and stress conditions, and included down-regulation of environmental information processing, immune and nervous system pathways and up-regulation of genetic information processing, carbohydrate metabolism, lipid metabolism and digestive and endocrine system pathways in the domesticated fish relative to their wild counterparts, likely reflective of different selection pressures acting in wild and cultured populations. Many stress responsive functions were also shared between crosses and included down-regulation of cellular processes and genetic information processing and up-regulation of some metabolic pathways, lipid and energy in particular. The latter may be indicative of mobilization and reallocation of energy resources in response to stress. However, functional analysis indicated that a number of pathways behave differently between domesticated and wild salmon in response to stress. Reciprocal F1 hybrids permitted investigation of inheritance patterns that govern transcriptomic differences between these genetically divergent crosses. Additivity and maternal dominance accounted for approximately 42 and 25% of ... Article in Journal/Newspaper Atlantic salmon University of Bergen: Bergen Open Research Archive (BORA-UiB) BMC Genetics 21 1 |
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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 |
description |
Background Domestication is the process by which organisms become adapted to the human-controlled environment. Since the selection pressures that act upon cultured and natural populations differ, adaptations that favour life in the domesticated environment are unlikely to be advantageous in the wild. Elucidation of the differences between wild and domesticated Atlantic salmon may provide insights into some of the genomic changes occurring during domestication, and, help to predict the evolutionary consequences of farmed salmon escapees interbreeding with wild conspecifics. In this study the transcriptome of the offspring of wild and domesticated Atlantic salmon were compared using a common-garden experiment under standard hatchery conditions and in response to an applied crowding stressor. Results Transcriptomic differences between wild and domesticated crosses were largely consistent between the control and stress conditions, and included down-regulation of environmental information processing, immune and nervous system pathways and up-regulation of genetic information processing, carbohydrate metabolism, lipid metabolism and digestive and endocrine system pathways in the domesticated fish relative to their wild counterparts, likely reflective of different selection pressures acting in wild and cultured populations. Many stress responsive functions were also shared between crosses and included down-regulation of cellular processes and genetic information processing and up-regulation of some metabolic pathways, lipid and energy in particular. The latter may be indicative of mobilization and reallocation of energy resources in response to stress. However, functional analysis indicated that a number of pathways behave differently between domesticated and wild salmon in response to stress. Reciprocal F1 hybrids permitted investigation of inheritance patterns that govern transcriptomic differences between these genetically divergent crosses. Additivity and maternal dominance accounted for approximately 42 and 25% of ... |
format |
Article in Journal/Newspaper |
author |
Bicskei, Beatrix Taggart, John B. Bron, James E. Glover, Kevin |
spellingShingle |
Bicskei, Beatrix Taggart, John B. Bron, James E. Glover, Kevin Transcriptomic comparison of communally reared wild, domesticated and hybrid Atlantic salmon fry under stress and control conditions |
author_facet |
Bicskei, Beatrix Taggart, John B. Bron, James E. Glover, Kevin |
author_sort |
Bicskei, Beatrix |
title |
Transcriptomic comparison of communally reared wild, domesticated and hybrid Atlantic salmon fry under stress and control conditions |
title_short |
Transcriptomic comparison of communally reared wild, domesticated and hybrid Atlantic salmon fry under stress and control conditions |
title_full |
Transcriptomic comparison of communally reared wild, domesticated and hybrid Atlantic salmon fry under stress and control conditions |
title_fullStr |
Transcriptomic comparison of communally reared wild, domesticated and hybrid Atlantic salmon fry under stress and control conditions |
title_full_unstemmed |
Transcriptomic comparison of communally reared wild, domesticated and hybrid Atlantic salmon fry under stress and control conditions |
title_sort |
transcriptomic comparison of communally reared wild, domesticated and hybrid atlantic salmon fry under stress and control conditions |
publisher |
BMC |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2730266 https://doi.org/10.1186/s12863-020-00858-y |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
57 BMC Genetics 21:57 21 |
op_relation |
urn:issn:1471-2156 https://hdl.handle.net/11250/2730266 https://doi.org/10.1186/s12863-020-00858-y cristin:1821336 BMC Genetics. 2020, 21, 57. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright The Author(s). 2020 |
op_doi |
https://doi.org/10.1186/s12863-020-00858-y |
container_title |
BMC Genetics |
container_volume |
21 |
container_issue |
1 |
_version_ |
1766361562424016896 |