Abstract
A hypothesis was advanced and grounded that the total content of eicosapentaenoic (EPA, 20:5n-3) and docosahexaenoic (DHA, 22:6n-3) acids in fish muscle tissue is associated with the species-specific (taxon-specific) duration of embryo development. A meta-analysis of the original and published data was performed using fishes of the families Coregonidae and Salmonidae as an example. Fishes with longer embryo development times, which are observed at lower temperatures, were found to have significantly higher EPA + DHA contents in muscles as compared with the species that belong to the same families but have shorter embryo development times. This association was explained by the fact that an embryo forms more cells per unit tissue volume at lower temperatures, which requires a greater specific amount of cell membranes and, therefore, greater amounts of EPA and DHA to produce them.
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ACKNOWLEDGMENTS
We are grateful to N.V. Bardukov and L.S. Osetskii for discussion of the problems considered in the study.
Funding
The study was supported by the Russian Science Foundation (project no. 16-14-10001).
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Translated by M. Batrukova
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Artamonova, V.S., Makhrov, A.A., Gladyshev, M.I. et al. Polyunsaturated Fatty Acid Content in Muscle Tissue Is Associated with the Duration of Embryo Development in Salmonoid Fishes (Salmonoidei). Dokl Biochem Biophys 491, 59–61 (2020). https://doi.org/10.1134/S1607672920020039
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DOI: https://doi.org/10.1134/S1607672920020039