Lipids in the daubed shanny (Teleostei: Leptoclinus maculatus) in Svalbard waters

Мурзина, С. А.; Нефедова, З. А.; Falk‐Petersen, Stig; Hop, Haakon; Ryokolainen, Tatiana R.; Ottesen, Camilla A. Meyer; Ripatti, P. O.; Berge, Jørgen; Немова, Н. Н.

doi:10.1007/s00300-013-1381-x

Cited by 10 publications

(4 citation statements)

References 59 publications

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“…L. macdonaldi, B. euryops, and Sc. beanii contained high levels of the FAs that are biomarkers of Calanus copepods (20:1(n-9) and 22:1(n-11))-the main food item for planktivorous consumers [24,72,73,99]. Feeding on zooplankton in L. macdonaldi is also corroborated by the muscular accumulation of waxes and the long-chain alcohol 22:1(n-11)Alk, which are abundant in Calanus copepods [100,101].…”

Section: Discussionmentioning

confidence: 93%

Lipids and Fatty Acids in Some Mesopelagic Fish Species: General Characteristics and Peculiarities of Adaptive Response to Deep-Water Habitat

Voronin

Артеменков

Орлов

et al. 2022

JMSE

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The lipid and fatty acid composition of muscles of mesopelagic fish species Lampanyctus macdonaldi, Bathylagus euryops, Serrivomer beanii, Scopelogadus beanii in the Irminger Sea at deep range were studied. The contents of the total lipids (TLs), total phospholipids (PLs), monoacylglycerols (MAGs), diacylglycerols (DAGs), triacylglycerols (TAGs), cholesterol (Chol), Chol esters, non-esterified fatty acids (NEFAs), and wax esters were determined by HPTLC; the PL classes were determined by HPLC; and fatty acids (FAs) were determined using GC. It was found significant differences in lipid profile of the studied fishes: Chol esters and waxes were dominant in L. macdonaldii and S. beanii, fish species with diel vertical migrations (DVM), while TAGs were prevalent in B. euryops and Sc. Beanii—non-migratory species. It was revealed the species-specific differences in FAs profiles of the studied fish. Along with this, it was detected the similarity of FAs in fish, which is associated with food sources. A comparative analysis of lipids and FAs among L. macdonaldi and S. beanii collected in the Irminger Sea and L. alatus and S. beanii collected in the Tropic Seamount revealed similar biochemical strategies for the accumulation of certain lipids characterized the mesopelagic inhabit despite latitude differences of the area of study.

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Section: Discussionmentioning

confidence: 93%

Lipids and Fatty Acids in Some Mesopelagic Fish Species: General Characteristics and Peculiarities of Adaptive Response to Deep-Water Habitat

Voronin

Артеменков

Орлов

et al. 2022

JMSE

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“…The lipid sac is a depot of lipids that ensures buoyancy and, to some extent, phenotypic adaptation to pelagic conditions. It consists of large, densely packed lipid drops [27,28,30]. Later [28,29], it was found that postlarvae inhabit the pelagic zone until the age of 3-5 years, after which juveniles switch to a demersal mode of life.…”

Section: Introductionmentioning

confidence: 99%

Tiny but Fatty: Lipids and Fatty Acids in the Daubed Shanny (Leptoclinus maculatus), a Small Fish in Svalbard Waters

et al. 2020

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The seasonal dynamic of lipids and their fatty acid constituents in the lipid sac and muscles of pelagic postlarval Leptoclinus maculatus, an ecologically important fish species in the Arctic food nets, in Kongsfjord, Svalbard waters was studied. The determination of the qualitative and quantitative content of the total lipids (TLs), total phospholipids (PLs), triacylglycerols (TAGs), cholesterol (Chol), cholesterol esters (Chol esters) and wax esters was analyzed by TLC, the phosphatidylserine (PS), phosphatidylethanolamine (PE), phosphatidylinositol (PI), phosphatidylcholine (PC), lysophosphatidylcholine (LPC) and sphingomyelin (SM) were determined by HPLC, and fatty acids of total lipids using GC. The lipid sac is a system of cavities filled with lipids, and it is not directly connected to organs of the digestive system. The wall’s inner layer is a multinuclear symplast that has a trophic function. The results provide additional knowledge on the role of lipids in the biochemical and physiological adaptation of fish to specific environments and clarify the relationship between fatty acids and the food specialization of postlarvae. Analysis of the fatty acid (FA) profile of TLs in the muscles and lipid sac of daubed shanny pelagic postlarvae showed it to be tissue- and organ-specific, and tightly associated with seasonal variations of environmental factors (temperature conditions and trophic resources).

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“…It has been suggested that increase hydrostatic pressure and low temperature effect the biomembrane (Velansky and Kostetsky 2008) as shown with the increase of MUFA with depth. In our previous research, we found that the MUFA/PUFA content in the TL is higher in the arctic L. maculatus (Fries 1838) (Isfjord, Spitzbergen) inhabiting at 0ºC temperatures at 206 m compared with the subarctic Lumpenus fabricii (Reinhardt 1836) (White Sea) collected from two habitats in the temperature range of 5.9-6.7ºC at depths down to 38 m (Murzina et al 2013). Despite the known genetic determinacy, the FA composition of the PL may vary at early ontogenetic stages in fish in response to environmental factors (Tocher et al 2008).…”

Section: Discussionmentioning

confidence: 91%

“…The lipid sacs of the L3, L4, and L4* development stages was dissected out from the fresh fish as soon as possible in cold conditions (Fig 1 , Table 2). To prevent degradation of complex lipids, samples were fixed in 96% ethyl alcohol (10 ml in each) mixed with 0.001% of BHT as antioxidant (Murzina et al 2013). In the laboratory, total lipid was extracted from the samples stored in chloroform/methanol (2:1, v/v) by the method of Folch et al (1957) and further threated as outlined by Murzina et al (2013).…”

Section: Lipid Extractionmentioning

confidence: 99%

Fatty acid composition of the postlarval daubed shanny (Leptoclinus maculatus) during the polar night

et al. 2020

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Recent discoveries of high levels of biological activity in the Arctic marine ecosystems during the polar night raise questions regarding the ecophysiology of the pelagic postlarval daubed shanny Leptoclinus maculatus. Of special interest in the composition of the lipid sac -a unique feature not found in other Arctic fishes. Analysis of the fatty acid content of major classes of lipids as membrane -total phospholipids (PL) and storage -triacylglycerols (TAG) in the different postlarvae stages during the polar night is presented in this work for the first time. A high levels of monounsaturated fatty acids (MUFA) (70%-74% of the total fatty acids (FA) of TAG) was found in the TAG of the L3-L4 postlarvae stages, among which 20:1n-9 (28%) and 22:1n-11 (27%-29%) FA are trophic biomarkers of the zooplankton Calanus spp. Among the polyunsaturated FA (PUFA) the n-3 FA dominated (22:6n-3 -in the PL, and 18:4n-3 -in the TAG). A decrease in the SFA and an increase in the MUFA in the structural PL during the transition from the postlarval to the demersal stage was observed. Our analyses of the FA composition of the lipid sac suggest that it continues to actively hunt for its preferred prey item Calanus spp. during the polar night.

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Lipids in the daubed shanny (Teleostei: Leptoclinus maculatus) in Svalbard waters

Cited by 10 publications

References 59 publications

Lipids and Fatty Acids in Some Mesopelagic Fish Species: General Characteristics and Peculiarities of Adaptive Response to Deep-Water Habitat

Lipids and Fatty Acids in Some Mesopelagic Fish Species: General Characteristics and Peculiarities of Adaptive Response to Deep-Water Habitat

Tiny but Fatty: Lipids and Fatty Acids in the Daubed Shanny (Leptoclinus maculatus), a Small Fish in Svalbard Waters

Fatty acid composition of the postlarval daubed shanny (Leptoclinus maculatus) during the polar night

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