Thiamin dynamics during the adult life cycle of Atlantic salmon (Salmo salar).
Atlantic salmon
Baltic Sea
M74 syndrome
Salmon life cycle
Thiamin
Thiamin deficiency
Journal
Journal of fish biology
ISSN: 1095-8649
Titre abrégé: J Fish Biol
Pays: England
ID NLM: 0214055
Informations de publication
Date de publication:
Mar 2024
Mar 2024
Historique:
revised:
05
09
2023
received:
20
05
2023
accepted:
06
10
2023
medline:
18
3
2024
pubmed:
12
10
2023
entrez:
12
10
2023
Statut:
ppublish
Résumé
Thiamin is an essential water-soluble B vitamin known for its wide range of metabolic functions and antioxidant properties. Over the past decades, reproductive failures induced by thiamin deficiency have been observed in several salmonid species worldwide, but it is unclear why this micronutrient deficiency arises. Few studies have compared thiamin concentrations in systems of salmonid populations with or without documented thiamin deficiency. Moreover, it is not well known whether and how thiamin concentration changes during the marine feeding phase and the spawning migration. Therefore, samples of Atlantic salmon (Salmo salar) were collected when actively feeding in the open Baltic Sea, after the sea migration to natal rivers, after river migration, and during the spawning period. To compare populations of Baltic salmon with systems without documented thiamin deficiency, a population of landlocked salmon located in Lake Vänern (Sweden) was sampled as well as salmon from Norwegian rivers draining into the North Atlantic Ocean. Results showed the highest mean thiamin concentrations in Lake Vänern salmon, followed by North Atlantic, and the lowest in Baltic populations. Therefore, salmon in the Baltic Sea seem to be consistently more constrained by thiamin than those in other systems. Condition factor and body length had little to no effect on thiamin concentrations in all systems, suggesting that there is no relation between the body condition of salmon and thiamin deficiency. In our large spatiotemporal comparison of salmon populations, thiamin concentrations declined toward spawning in all studied systems, suggesting that the reduction in thiamin concentration arises as a natural consequence of starvation rather than to be related to thiamin deficiency in the system. These results suggest that factors affecting accumulation during the marine feeding phase are key for understanding the thiamin deficiency in salmonids.
Substances chimiques
Thiamine
X66NSO3N35
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
807-824Subventions
Organisme : Kalmar's and Växjö's major Linnaeus scholarship for research within ecologically sustainable development
Organisme : Royal Swedish Academy of Sciences
ID : BS2019-0043
Organisme : Svenska Forskningsrådet Formas
ID : FR-2020/0008
Organisme : Vetenskapsrådet
ID : 2019-04251
Informations de copyright
© 2023 The Authors. Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles.
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