Characterisation of organic osmolytes and biomarkers of smoltification in the Atlantic salmon (Salmo salar)
Atlantic salmon are an economically important species, particularly in Scotland. The aquaculture of this species is complicated by its anadromous life cycle, requiring transfer to seawater. Smoltification is a complex process whereby fish prepare for entry to seawater, the “smolt window” is the time...
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ftdatacite:10.17630/sta/31 2023-05-15T15:30:17+02:00 Characterisation of organic osmolytes and biomarkers of smoltification in the Atlantic salmon (Salmo salar) Dagen, Claire Alexandra 2020 https://dx.doi.org/10.17630/sta/31 https://research-repository.st-andrews.ac.uk/handle/10023/21491 en eng University of St Andrews Creative Commons Attribution Non Commercial No Derivatives 4.0 International Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 CC-BY-NC-ND Atlantic salmon Salmon Osmoregulation Organic osmolyte Osmolyte Hypoxanthine Biomarker Smolt Smoltification Aquaculture Anadromous Euryhaline Feeding trial QL638.S2D2 Smolting Biochemical markers CreativeWork article 2020 ftdatacite https://doi.org/10.17630/sta/31 2021-11-05T12:55:41Z Atlantic salmon are an economically important species, particularly in Scotland. The aquaculture of this species is complicated by its anadromous life cycle, requiring transfer to seawater. Smoltification is a complex process whereby fish prepare for entry to seawater, the “smolt window” is the time at which fish are best adapted for the transition to seawater. In the aquaculture setting fish are unable to self-select and may be transferred to the marine environment outwith their optimal smolt window, it is thus important that the mechanisms involved in seawater adaptation are well understood. The accumulation of organic osmolytes forms an important part of the adaptation to seawater, allowing fish to maintain osmotic and ionic balance within their tissues. A novel osmolyte identified in a pilot study was characterised and the metabolism of this compound investigated. The novel compound was identified as hypoxanthine, a purine involved in the nucleotide salvage pathway. This osmolyte and taurine were found be accumulated in the skin of Atlantic salmon in the days and weeks following seawater transfer. A number of potential biomarkers of smoltification were also investigated with an aim to develop a more robust set of markers of the hypo-osmoregulatory ability of fish. Genes involved in the transport of ions were found to be the most reliable indicators of smoltification. Article in Journal/Newspaper Atlantic salmon Salmo salar DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Atlantic salmon Salmon Osmoregulation Organic osmolyte Osmolyte Hypoxanthine Biomarker Smolt Smoltification Aquaculture Anadromous Euryhaline Feeding trial QL638.S2D2 Smolting Biochemical markers |
spellingShingle |
Atlantic salmon Salmon Osmoregulation Organic osmolyte Osmolyte Hypoxanthine Biomarker Smolt Smoltification Aquaculture Anadromous Euryhaline Feeding trial QL638.S2D2 Smolting Biochemical markers Dagen, Claire Alexandra Characterisation of organic osmolytes and biomarkers of smoltification in the Atlantic salmon (Salmo salar) |
topic_facet |
Atlantic salmon Salmon Osmoregulation Organic osmolyte Osmolyte Hypoxanthine Biomarker Smolt Smoltification Aquaculture Anadromous Euryhaline Feeding trial QL638.S2D2 Smolting Biochemical markers |
description |
Atlantic salmon are an economically important species, particularly in Scotland. The aquaculture of this species is complicated by its anadromous life cycle, requiring transfer to seawater. Smoltification is a complex process whereby fish prepare for entry to seawater, the “smolt window” is the time at which fish are best adapted for the transition to seawater. In the aquaculture setting fish are unable to self-select and may be transferred to the marine environment outwith their optimal smolt window, it is thus important that the mechanisms involved in seawater adaptation are well understood. The accumulation of organic osmolytes forms an important part of the adaptation to seawater, allowing fish to maintain osmotic and ionic balance within their tissues. A novel osmolyte identified in a pilot study was characterised and the metabolism of this compound investigated. The novel compound was identified as hypoxanthine, a purine involved in the nucleotide salvage pathway. This osmolyte and taurine were found be accumulated in the skin of Atlantic salmon in the days and weeks following seawater transfer. A number of potential biomarkers of smoltification were also investigated with an aim to develop a more robust set of markers of the hypo-osmoregulatory ability of fish. Genes involved in the transport of ions were found to be the most reliable indicators of smoltification. |
format |
Article in Journal/Newspaper |
author |
Dagen, Claire Alexandra |
author_facet |
Dagen, Claire Alexandra |
author_sort |
Dagen, Claire Alexandra |
title |
Characterisation of organic osmolytes and biomarkers of smoltification in the Atlantic salmon (Salmo salar) |
title_short |
Characterisation of organic osmolytes and biomarkers of smoltification in the Atlantic salmon (Salmo salar) |
title_full |
Characterisation of organic osmolytes and biomarkers of smoltification in the Atlantic salmon (Salmo salar) |
title_fullStr |
Characterisation of organic osmolytes and biomarkers of smoltification in the Atlantic salmon (Salmo salar) |
title_full_unstemmed |
Characterisation of organic osmolytes and biomarkers of smoltification in the Atlantic salmon (Salmo salar) |
title_sort |
characterisation of organic osmolytes and biomarkers of smoltification in the atlantic salmon (salmo salar) |
publisher |
University of St Andrews |
publishDate |
2020 |
url |
https://dx.doi.org/10.17630/sta/31 https://research-repository.st-andrews.ac.uk/handle/10023/21491 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_rights |
Creative Commons Attribution Non Commercial No Derivatives 4.0 International Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.17630/sta/31 |
_version_ |
1766360734577459200 |