Research article - Peer-reviewed, 2021
Proof of concept: visual categorization of carotenoid pigmentation in Arctic charr (Salvelinus alpinus L) can predict stress response
Backstrom, Tobias; Brannas, Eva; Nilsson, Jan; Carlberg, Hanna; Johansson, Kajsa; Magnhagen, CarinAbstract
Carotenoid pigmentation in Salvelinus alpinus has been connected to stress responsiveness in earlier studies. This has, however, only been tested with time-consuming image analysis from photos. Here, we used quick visual categorization of carotenoid pigmentation to investigate the stress responsiveness of the extreme groups. The visually selected charr were then exposed to a net restraint stressor. Arctic charr with few spots also had a lower stress responsiveness compared to charr with many spots. Thus, visual selection could be used as a simple method within aquaculture.Keywords
aquaculture; Arctic superior; carotenoid; net restraint stressor; pigmentationPublished in
Journal of Fish Biology2021, volume: 98, number: 4, pages: 1192-1195
Publisher: WILEY
Authors' information
Backstrom, Tobias
University of Koblenz and Landau
Brännäs, Eva
Swedish University of Agricultural Sciences, Department of Wildlife, Fish and Environmental Studies
Swedish University of Agricultural Sciences, Department of Wildlife, Fish and Environmental Studies
Johansson, Kajsa
Swedish University of Agricultural Sciences, Department of Wildlife, Fish and Environmental Studies
Swedish University of Agricultural Sciences, Department of Wildlife, Fish and Environmental Studies
Nilsson, Jan
Swedish University of Agricultural Sciences, Department of Wildlife, Fish and Environmental Studies
UKÄ Subject classification
Fish and Aquacultural Science
Publication Identifiers
DOI: https://doi.org/10.1111/jfb.14633
URI (permanent link to this page)
https://res.slu.se/id/publ/110365