Triploidy does not decrease contents of eicosapentaenoic and docosahexaenoic acids in filets of pink salmon Oncorhynchus gorbuscha

Gladyshev, Michail I.; Артамонова, В. С.; Махров, А. А.; Sushchik, Nadezhda N.; Kalachova, Galina S.; Dgebuadze, Yury Yu.

doi:10.1016/j.foodchem.2016.08.021

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…In our study, a considerable discrepancy between levels (percentages) of PUFA and their content in mass units in fish biomass was found, as in many other studies [14,24,[26][27][28]. Indeed, C. lavaretus from the Keret River had the highest EPA and DHA levels, 12.1 and 26.5%, respectively, while it had one of the lowest contents of EPA + DHA, 2.33 mg g −1 wet weight.…”

Section: Discussioncontrasting

confidence: 68%

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Fatty Acid Composition and Contents of Seven Commercial Fish Species of Genus Coregonus from Russian Subarctic Water Bodies

Gladyshev

Sushchik

Makhutova

et al. 2017

Lipids

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In several Russian northern lakes and rivers, Arctic cisco Coregonus autumnalis, least cisco C. sardinella, peled C. peled, tugun C. tugun, broad whitefish C. nasus, whitefish C. lavaretus and vendace C. albula were sampled in periods of officially permitted commercial fishery. Special attention was paid to contents (mg g of wet weight) of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in muscle tissues (filets), which are essential for human nutrition. The highest values of EPA + DHA content in semi-anadromous fish and freshwater fish were recorded for C. autumnalis from the Yenisei River, 17.60 mg g wet weight, and for C. lavaretus from the Sobachye Lake, 16.61 mg g wet weight, respectively. Intra-genus variations of EPA + DHA contents of Coregonus species were from 1.87 to 17.60 mg g wet weight. Since the congeneric species were genetically close to each other, the variations in EPA and DHA contents were thought to be caused primarily by ecological factors: migrational capability, type of feeding and trophic status of aquatic ecosystems. In general, the majority of studied species appeared to be of a high nutritive value for humans, although unfavorable environmental conditions could considerably diminish this value.

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Section: Discussioncontrasting

confidence: 68%

“…percent of total FA [25]. Nevertheless, to estimate the nutritive value of fish for humans, it is necessary to measure EPA and DHA contents in edible biomass (mg g −1 ), rather than then percent [18,24,[26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Fatty Acid Composition and Contents of Seven Commercial Fish Species of Genus Coregonus from Russian Subarctic Water Bodies

Gladyshev

Sushchik

Makhutova

et al. 2017

Lipids

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“…An analysis of its evolutionary consequences in plants [ 11 ] and teleosts [ 12 ] has led to the idea of autopolyploidy as a nearly neutral process. Experimental data available for salmonids agree with the idea, apart from sterility in triploids [ 13 , 14 ]. However, functional divergence of many duplicated genes as a result of long−term evolution has been observed in polyploid groups, including those of salmonids [ 15 , 16 , 17 ].…”

Section: Introductionsupporting

confidence: 55%

A Narrowing of the Phenotypic Diversity Range after Large Rearrangements of the Karyotype in Salmonidae: The Relationship between Saltational Genome Rearrangements and Gradual Adaptive Evolution

Махров

2017

Genes

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The problem of how a gradual development of ecological and morphological adaptations combines with large genome rearrangements, which have been found to occur in the phylogeny of many groups of organisms, is a matter of discussion in the literature. The objective of this work was to study the problem with the example of salmonids, whose evolution included at least six events of multiple chromosome fusions. Large karyotype rearrangements are associated with a decrease in ecological and morphological diversity in salmonids. In the above example, genome rearrangements seem to distort the function of the genetic systems that are responsible for the occurrence of certain ecological forms in salmonids.

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Meta-analysis of factors associated with omega-3 fatty acid contents of wild fish

Gladyshev

Sushchik

Толомеев

et al. 2017

Rev Fish Biol Fisheries

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Fish are recognized as the main source of physiologically important omega-3 long-chain polyunsaturated fatty acids, namely, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), for human nutrition. However, muscle tissue contents of these fatty acids in diverse fish species, i.e., their nutritive value for humans, varied within two orders of magnitude. We reviewed contents of EPA and DHA, measured by similar methods using an internal standard during chromatography as mg per g of wet mass in 172 fish species belonging to 16 orders, to evaluate probable variations in phylogenetic and ecological drivers. EPA+DHA content varied from 25.6 mg•g-1 of wet mass (Sardinops sagax) to 0.12 mg•g-1 (Gymnura spp.). Multidimensional redundancy analysis revealed that among phylogenetic, ecomorphological and abiotic environmental factors, the highest proportion of variation contribution belonged to the shared contribution of sets of phylogenetic and ecomorphological factors. Specifically, the highest values of EPA+DHA content were characteristic of fish belonging to the orders Clupeiformes or Salmoniformes, were pelagic fast swimmers, ate zooplankton and inhabited marine waters or migrated from fresh to marine waters (anadromous migrations). High EPA and DHA content in muscle tissues of the above species appeared to be a metabolic adaptation for fast continuous swimming. In contrast to common beliefs, our meta-analysis did not support the significant influence of higher trophic levels (piscivory) and cold environments (homeoviscous adaptation) on EPA and DHA content in fish. However, many causes of high and low levels of physiologically important fatty acids in certain fish species remained unexplained and require evaluation in future studies.

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Triploidy does not decrease contents of eicosapentaenoic and docosahexaenoic acids in filets of pink salmon Oncorhynchus gorbuscha

Cited by 5 publications

References 18 publications

Fatty Acid Composition and Contents of Seven Commercial Fish Species of Genus Coregonus from Russian Subarctic Water Bodies

Fatty Acid Composition and Contents of Seven Commercial Fish Species of Genus Coregonus from Russian Subarctic Water Bodies

A Narrowing of the Phenotypic Diversity Range after Large Rearrangements of the Karyotype in Salmonidae: The Relationship between Saltational Genome Rearrangements and Gradual Adaptive Evolution

Meta-analysis of factors associated with omega-3 fatty acid contents of wild fish

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