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Proof of concept: visual categorization of carotenoid pigmentation in Arctic charr ( Salvelinus alpinus L) can predict stress response
Author(s) -
Backström Tobias,
Brännäs Eva,
Nilsson Jan,
Carlberg Hanna,
Johansson Kajsa,
Magnhagen Carin
Publication year - 2021
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.14633
Subject(s) - salvelinus , biology , arctic , categorization , carotenoid , zoology , stressor , ecology , evolutionary biology , artificial intelligence , fishery , fish <actinopterygii> , neuroscience , computer science , botany , trout
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.