Photoperiodic history-dependent preadaptation of the smolting gill. Novel players and SW immediate response as markers of growth and welfare
This thesis presents a rich introduction to the evolution, life history and physiology of Atlantic salmon, with a special emphasis on the developmental transitions (termed smolting) juvenile salmon pass through has they prepare to migrate from their native freshwater habitat to the sea. The introduc...
Main Author: | |
---|---|
Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
Published: |
UiT The Arctic University of Norway
2021
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/20678 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/20678 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Basic biosciences: 470::Bioinformatics: 475 VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Bioinformatikk: 475 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920::Fiskehelse: 923 DOKTOR-002 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Basic biosciences: 470::Bioinformatics: 475 VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Bioinformatikk: 475 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920::Fiskehelse: 923 DOKTOR-002 Iversen, Marianne Photoperiodic history-dependent preadaptation of the smolting gill. Novel players and SW immediate response as markers of growth and welfare |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Basic biosciences: 470::Bioinformatics: 475 VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Bioinformatikk: 475 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920::Fiskehelse: 923 DOKTOR-002 |
description |
This thesis presents a rich introduction to the evolution, life history and physiology of Atlantic salmon, with a special emphasis on the developmental transitions (termed smolting) juvenile salmon pass through has they prepare to migrate from their native freshwater habitat to the sea. The introduction provides a comprehensive background on chronobiology and osmoregulation in fishes and links this to the process of smolting as it has been described in literature. Further, this thesis contributes three papers to the standing literature on Atlantic salmon, salmonids and smolting. Paper I focuses on the role of photoperiod history for smolting and pre-adaptation to saltwater to occur in a coordinated and organized manner, and presents results showing photoperiod history ultimately influences saltwater growth. The paper presents data on previously unstudied genes in the context of salmonids and pre-adaptation to saltwater indicating that they could be important for predicting SW-tolerance in juvenile salmon. Paper II further illustrates the importance of photoperiod stimuli to drive smolting and preadaptation to saltwater. The data presented in paper II show clear differences in the response to saltwater between different photoperiod treatments. Not only in the number of responsive genes but also in the group of genes whose expression was influenced by saltwater exposure. Saltwater-responsive genes in the two treatments designed not to bring forth a saltwater-adapted juvenile were enriched for promoter motifs linked with a general stress response and osmoregulatory stress. The third paper focused on the temporal and spatial expression of the so-called clock genes in salmon, also smolting. One of the main findings of this paper is that many clock genes derived from the fourth salmon specific whole genome duplication have tissue-specific expression profiles, and that their regulation in the gill correlates with smolting. The main findings of these papers are presented and discussed together with insights from literature and unpublished data derived from the same datasets presented in the papers. |
format |
Doctoral or Postdoctoral Thesis |
author |
Iversen, Marianne |
author_facet |
Iversen, Marianne |
author_sort |
Iversen, Marianne |
title |
Photoperiodic history-dependent preadaptation of the smolting gill. Novel players and SW immediate response as markers of growth and welfare |
title_short |
Photoperiodic history-dependent preadaptation of the smolting gill. Novel players and SW immediate response as markers of growth and welfare |
title_full |
Photoperiodic history-dependent preadaptation of the smolting gill. Novel players and SW immediate response as markers of growth and welfare |
title_fullStr |
Photoperiodic history-dependent preadaptation of the smolting gill. Novel players and SW immediate response as markers of growth and welfare |
title_full_unstemmed |
Photoperiodic history-dependent preadaptation of the smolting gill. Novel players and SW immediate response as markers of growth and welfare |
title_sort |
photoperiodic history-dependent preadaptation of the smolting gill. novel players and sw immediate response as markers of growth and welfare |
publisher |
UiT The Arctic University of Norway |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/20678 |
long_lat |
ENVELOPE(177.514,177.514,52.003,52.003) |
geographic |
Salmon Pass |
geographic_facet |
Salmon Pass |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_relation |
Paper I: Iversen, M., Mulugeta, T., Blikeng, B.G., West, A., Jørgensen, E., Sandve, S.R. & Hazlerigg, D. (2020). RNA profiling identifies novel, photoperiod-history dependent markers associated with enhanced saltwater performance in juvenile Atlantic salmon. PLoS ONE, 15 (4), e0227496. Also available in Munin at https://hdl.handle.net/10037/18553 . Paper II: Iversen, M., Mulugeta, T., West, A., Jørgensen, E., Martin, S.A.M., Sandve, S.R. & Hazlerigg, D. Photoperiod-dependent developmental reprogramming of the transcriptional response to seawater entry in an anadromous salmonid. (Manuscript). Paper III: West, A.C., Iversen, M., Jørgensen, E.H., Sandve, S.R., Hazlerigg, D.G. & Wood, S.H. (2020). Diversified regulation of circadian clock gene expression following whole genome duplication. PLOS Genetics, 16 (10), e1009097. Also available in Munin at https://hdl.handle.net/10037/20373 . The transcriptomics data set used for this thesis is available at the ArrayExpress depository , with accession number E-MTAB-8276. info:eu-repo/grantAgreement/RCN/FRIMEDBIO/241016/Norway/Light & Salt - Thyroid hormone deiodinase paralogues & the evolution of complex life-history strategy in salmonids// 978-82-8266-197-3 https://hdl.handle.net/10037/20678 |
op_rights |
openAccess Copyright 2021 The Author(s) |
_version_ |
1766362867804667904 |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/20678 2023-05-15T15:32:22+02:00 Photoperiodic history-dependent preadaptation of the smolting gill. Novel players and SW immediate response as markers of growth and welfare Iversen, Marianne 2021-04-16 https://hdl.handle.net/10037/20678 eng eng UiT The Arctic University of Norway UiT Norges arktiske universitet Paper I: Iversen, M., Mulugeta, T., Blikeng, B.G., West, A., Jørgensen, E., Sandve, S.R. & Hazlerigg, D. (2020). RNA profiling identifies novel, photoperiod-history dependent markers associated with enhanced saltwater performance in juvenile Atlantic salmon. PLoS ONE, 15 (4), e0227496. Also available in Munin at https://hdl.handle.net/10037/18553 . Paper II: Iversen, M., Mulugeta, T., West, A., Jørgensen, E., Martin, S.A.M., Sandve, S.R. & Hazlerigg, D. Photoperiod-dependent developmental reprogramming of the transcriptional response to seawater entry in an anadromous salmonid. (Manuscript). Paper III: West, A.C., Iversen, M., Jørgensen, E.H., Sandve, S.R., Hazlerigg, D.G. & Wood, S.H. (2020). Diversified regulation of circadian clock gene expression following whole genome duplication. PLOS Genetics, 16 (10), e1009097. Also available in Munin at https://hdl.handle.net/10037/20373 . The transcriptomics data set used for this thesis is available at the ArrayExpress depository , with accession number E-MTAB-8276. info:eu-repo/grantAgreement/RCN/FRIMEDBIO/241016/Norway/Light & Salt - Thyroid hormone deiodinase paralogues & the evolution of complex life-history strategy in salmonids// 978-82-8266-197-3 https://hdl.handle.net/10037/20678 openAccess Copyright 2021 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Basic biosciences: 470::Bioinformatics: 475 VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Bioinformatikk: 475 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920::Fiskehelse: 923 DOKTOR-002 Doctoral thesis Doktorgradsavhandling 2021 ftunivtroemsoe 2021-06-25T17:58:07Z This thesis presents a rich introduction to the evolution, life history and physiology of Atlantic salmon, with a special emphasis on the developmental transitions (termed smolting) juvenile salmon pass through has they prepare to migrate from their native freshwater habitat to the sea. The introduction provides a comprehensive background on chronobiology and osmoregulation in fishes and links this to the process of smolting as it has been described in literature. Further, this thesis contributes three papers to the standing literature on Atlantic salmon, salmonids and smolting. Paper I focuses on the role of photoperiod history for smolting and pre-adaptation to saltwater to occur in a coordinated and organized manner, and presents results showing photoperiod history ultimately influences saltwater growth. The paper presents data on previously unstudied genes in the context of salmonids and pre-adaptation to saltwater indicating that they could be important for predicting SW-tolerance in juvenile salmon. Paper II further illustrates the importance of photoperiod stimuli to drive smolting and preadaptation to saltwater. The data presented in paper II show clear differences in the response to saltwater between different photoperiod treatments. Not only in the number of responsive genes but also in the group of genes whose expression was influenced by saltwater exposure. Saltwater-responsive genes in the two treatments designed not to bring forth a saltwater-adapted juvenile were enriched for promoter motifs linked with a general stress response and osmoregulatory stress. The third paper focused on the temporal and spatial expression of the so-called clock genes in salmon, also smolting. One of the main findings of this paper is that many clock genes derived from the fourth salmon specific whole genome duplication have tissue-specific expression profiles, and that their regulation in the gill correlates with smolting. The main findings of these papers are presented and discussed together with insights from literature and unpublished data derived from the same datasets presented in the papers. Doctoral or Postdoctoral Thesis Atlantic salmon University of Tromsø: Munin Open Research Archive Salmon Pass ENVELOPE(177.514,177.514,52.003,52.003) |