Journal
RUSSIAN JOURNAL OF ECOLOGY
Volume 48, Issue 3, Pages 240-244Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1067413617030134
Keywords
Arctic ecosystems; adaptations; daubed shanny; development; lipids; fatty acids
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Funding
- Presidium of the RAS Program of Fundamental Research Searching Fundamental Research for Development of the Russian Arctic [114061940010]
- International Project Timing of Ecological Processes in Spitsbergen Fjords (SpitsEco) [ES504895]
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The dynamics of lipid and fatty acid composition of the muscles (flesh) and lipid sac in L. maculatus early life stages of different age collected in Kongsfjorden (Svalbard, Norway), in winter, during the polar night was studied. We showed that the total lipid content in the muscles increases on account of energetic triacylglycerols derived from the lipid sac, which is resorbed in juveniles as they switch to a demersal mode of life. The fatty acid spectrum directly reflects age-dependent and seasonal features of L. maculatus early life stages. The results of the study elucidate the specific role of lipids and fatty acids in the ecological and biochemical mechanisms related to ontogenic development of fish from the family Stichaeidae, particularly arctic-boreal L. maculatus, which assumed to become increasingly frequent in the Spitsbergen water area. They are important for understanding the ability of organisms to maintain and preserve the functional stability of ecosystems as a whole, especially under conditions of climate change in the Arctic.
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