Analysis of carotenoids and fatty acid compositions in Atlantic salmon exposed to elevated temperatures and displaying flesh color loss.
- Resource Type
- Academic Journal
- Authors
- Vo TTM; Centre for Bioinnovation, University of the Sunshine Coast, 4 Locked Bag, Maroochydore DC, Queensland 4558, Australia; School of Science, Technology and Engineering, University of the Sunshine Coast, 4 Locked Bag, Maroochydore DC, Queensland 4558, Australia. Electronic address: thu.vo@research.usc.edu.au.; Tran TD; Centre for Bioinnovation, University of the Sunshine Coast, 4 Locked Bag, Maroochydore DC, Queensland 4558, Australia; School of Science, Technology and Engineering, University of the Sunshine Coast, 4 Locked Bag, Maroochydore DC, Queensland 4558, Australia. Electronic address: ttran1@usc.edu.au.; Amoroso G; Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 49, Hobart, Tasmania 7001, Australia. Electronic address: gianluca.amoroso@utas.edu.au.; Ventura T; Centre for Bioinnovation, University of the Sunshine Coast, 4 Locked Bag, Maroochydore DC, Queensland 4558, Australia; School of Science, Technology and Engineering, University of the Sunshine Coast, 4 Locked Bag, Maroochydore DC, Queensland 4558, Australia. Electronic address: tventura@usc.edu.au.; Elizur A; Centre for Bioinnovation, University of the Sunshine Coast, 4 Locked Bag, Maroochydore DC, Queensland 4558, Australia. Electronic address: aelizur@usc.edu.au.
- Source
- Publisher: Elsevier Applied Science Publishers Country of Publication: England NLM ID: 7702639 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-7072 (Electronic) Linking ISSN: 03088146 NLM ISO Abbreviation: Food Chem Subsets: MEDLINE
- Subject
- Language
- English
Tasmanian-farmed Atlantic salmon populations exhibit starvation followed by a reduced growth rate alongside reduced flesh pigmentation in response to elevated summer temperatures, which at times can exceed their optimum threshold. Here we investigated fatty acids and carotenoids of Atlantic salmon displaying three different flesh color phenotypes, using metabolomic and chemical analyses of lipids and pigments in six key tissues. Astaxanthin is mainly responsible for flesh pigmentation, while canthaxanthin is associated with carotenoid catabolism in the liver, as our findings indicate. Reduced flesh pigmentation correlated with lower levels of carotenoids across all tested tissues and clear evidence of a correlation between carotenoid and fatty acid levels in all detected fatty acid classes was observed. The reduced growth performance and flesh pigmentation are most likely due to the impact of varying levels of starvation on fatty acids and carotenoid profiles supporting the link between carotenoids and fatty acid metabolic processes.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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