Transcriptomic profiling of gill biopsies to define predictive markers for seawater survival in farmed Atlantic salmon
Publication details
Journal : Journal of Fish Biology , p. 1–9–8 , 2024
Publisher : John Wiley & Sons
International Standard Numbers
:
Printed
:
0022-1112
Electronic
:
1095-8649
Publication type : Academic article
Links
:
ARKIV
:
hdl.handle.net/10037/36056
DOI
:
doi.org/10.1111/jfb.16025
Research areas
Farmed fish
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Summary
Wild Atlantic salmon migrate to sea following completion of a developmental process known as parr-smolt transformation (PST), which establishes a seawater (SW) tolerant phenotype. Effective imitation of this aspect of anadromous life history is a crucial aspect of commercial salmon production, with current industry practice being marred by significant losses during transition from the freshwater (FW) to SW phase of production. The natural photoperiodic control of PST can be mimicked by exposing farmed juvenile fish to a reduced duration photoperiod for at least 6 weeks before increasing the photoperiod in the last 1–2 months before SW transfer. While it is known that variations in this general protocol affect subsequent SW performance, there is no uniformly accepted industry standard; moreover, reliable prediction of SW performance from fish attributes in the FW phase remains a major challenge. Here we describe an experiment in which we took gill biopsies 1 week prior to SW transfer from 3000 individually tag
