Fatty acid profile of juvenile arctic char (Salvelinus alpinus complex) from natural ecosystems and aquaculture

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Significant differences in the fatty acid composition of the muscle tissue of juvenile Arctic char Salvelinus alpinus [Linnaeus, 1758] from the natural habitat (Lake Sobachye) and aquaculture, as well as juveniles of the anadromous form of char (malma) Salvelinus malma [Walbaum, 1792] from the Avacha River. The observed differences between aquaculture and wild juvenile char were associated with different food sources. The muscle tissue of juvenile char from natural habitat was characterized by significantly higher levels of fatty acids – biomarkers of diatoms, as well as biomarkers of marine copepods in the anadromous form. In the fatty acid composition of juvenile char from aquaculture, significantly higher levels of linoleic acid were revealed, as well as long-chain monounsaturated acids, the source of which could be aquaculture feed. The identified differences did not have a significant effect on the content of eicosapentaenoic and docosahexaenoic acids in the muscle tissue of juvenile aquaculture and wild char. The content of biochemically valuable omega 3 polyunsaturated fatty acids in juvenile char from natural ecosystems and aquaculture was similar.

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Sobre autores

A. Rudchenko

Siberian Federal University; Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”

Autor responsável pela correspondência
Email: arudchenko@sfu-kras.ru
Rússia, Krasnoyarsk; Krasnoyarsk

V. Karpov

Siberian Federal University

Email: arudchenko@sfu-kras.ru
Rússia, Krasnoyarsk

N. Sushchik

Siberian Federal University; Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”

Email: arudchenko@sfu-kras.ru

Corresponding Member

Rússia, Krasnoyarsk; Krasnoyarsk

L. Glushchenko

Siberian Federal University

Email: arudchenko@sfu-kras.ru
Rússia, Krasnoyarsk

M. Gladyshev

Siberian Federal University; Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”

Email: arudchenko@sfu-kras.ru

Corresponding Member 

Rússia, Krasnoyarsk; Krasnoyarsk

Bibliografia

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2. Fig. 1. Analysis of the main components of the fatty acid composition (% of the total FA) in the muscle tissue of juvenile Arctic char (Salvelinus alpinus) and Dolly Varden (Salvelinus malma) from aquaculture and natural ecosystems.

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3. Fig. 2. Content of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) and total fatty acid (∑FA) content (mg/g wet weight) in muscle tissue of juvenile Arctic char (Salvelinus alpinus) and Dolly Varden (Salvelinus malma) from aquaculture and natural ecosystems. Values marked with the same letter did not have significant differences in the analysis of variance using the Tukey test at a significance level of p < 0.05.

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