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1.


   
    Production of EPA and DHA in aquatic ecosystems and their transfer to the land [Text] / M. I. Gladyshev, N. N. Sushchik, O. N. Makhutova // Prostaglandins Other Lipid Mediat. - 2013. - Vol. 107. - P117-126, DOI 10.1016/j.prostaglandins.2013.03.002. - Cited References: 129. - This work was supported by grants of Russian Foundation for Basic Research (RFBR) No. 11-04-00168 and No. 12-05-00298, and also by the project B-15 of Siberian Federal University, carried out according to Federal Tasks of Ministry of Education and Science of Russian Federation. We are grateful to two anonymous reviewers for their helpful comments to improve the manuscript. . - 10. - ISSN 1098-8823
РУБ Biochemistry & Molecular Biology + Cell Biology
Рубрики:
POLYUNSATURATED FATTY-ACIDS
   FRESH-WATER FISH

   EICOSAPENTAENOIC ACID

   DOCOSAHEXAENOIC ACID

   YENISEI RIVER

   BIOTECHNOLOGICAL PRODUCTION

   ARBUSCULAR MYCORRHIZAL

   CAENORHABDITIS-ELEGANS

   MICROBIAL COMMUNITY

   THYMALLUS-ARCTICUS

Кл.слова (ненормированные):
Eicosapentaenoic acid -- Docosahexaenoic acid -- Aquatic ecosystems -- Trophic transfer efficiency
Аннотация: Most omnivorous animals, including humans, have to some degree relied on physiologically important polyunsaturated fatty acids (PUFAs), such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) from food. Only some taxa of microalgae, rather than higher plants can synthesize de novo high amounts of EPA and DHA. Once synthesized by microalgae, PUFA are transferred through trophic chain to organisms of higher levels. Thus, aquatic ecosystems play the unique role in the Biosphere as the principal source of EPA and DHA for most omnivorous animals, including inhabitants of terrestrial ecosystems. PUFA are transferred from aquatic to terrestrial ecosystems through riparian predators, drift of carrion and seaweeds, emergence of amphibiotic insects, and water birds. The essential PUFA are transferred through trophic chains with about twice higher efficiency than bulk carbon. Thereby, PUFA are accumulated, rather than diluted in biomass of organisms of higher trophic levels, e.g., in fish. Mankind is faced with a severe deficiency of EPA and DHA in diet. Although additional sources of PUFA supply for humans, such as aquaculture, biotechnology of microorganisms and transgenic terrestrial oil-seed producing plants are developed, natural fish production of aquatic ecosystems will remain one of the main sources of EPA and DHA for humans. Aquatic ecosystems have to be protected from anthropogenic impacts, such as eutrophication, pollution and warming, which reduce PUFA production. (C) 2013 Elsevier Inc. All rights reserved.

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Scopus
Держатели документа:
[Gladyshev, Michail I.
Sushchik, Nadezhda N.
Makhutova, Olesia N.] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
[Gladyshev, Michail I.
Sushchik, Nadezhda N.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Sushchik, N.N.; Makhutova, O.N.; Russian Foundation for Basic Research (RFBR) [11-04-00168, 12-05-00298]; project B-15 of Siberian Federal University

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2.


   
    Seasonal formation of annual rings on the scales of Baikal grayling inhabiting the middle reaches of the Yenisei River under altered temperature regime / I. V. Zuev, P. Y. Andrushchenko, T. A. Zotina // Environ. Biol. Fishes. - 2021, DOI 10.1007/s10641-021-01155-y. - Cited References:40. - The research was supported by the grant of Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory, and Krasnoyarsk Regional Scientific Foundation No. 20-44-240009. . - Article in press. - ISSN 0378-1909. - ISSN 1573-5133
РУБ Ecology + Marine & Freshwater Biology
Рубрики:
THYMALLUS-ARCTICUS
   FLOW REGULATION

   SOCKEYE-SALMON

   SOMATIC GROWTH

Кл.слова (ненормированные):
Thymallus baicalensis -- Thymallus arcticus -- Number of circuli -- No-growth -- time -- Seasonal migration
Аннотация: The seasonal formation of annual rings on the scales of Baikal grayling from the middle reaches of the Yenisei River has been studied to find out the reasons for the high growth rate of the grayling under altered temperature regime downstream of the dam of the Krasnoyarsk Hydroelectric Plant. The number of circuli outside the last identified annuli and in the second, third, and fourth completed annuli was estimated on 569 fish caught during the annual cycle. The von Bertalanffy growth function was used to describe the increment in the number of circuli over a year. The calculation showed that a new annual ring was produced in July. In November, there was no statistically significant difference between the circulus number in scale increment and the circulus number in the corresponding completed annuli of older fish. Thus, despite the increased duration of the period with optimal water temperatures downstream of the dam of the Krasnoyarsk Hydroelectric Plant, fish growth was observed in a limited period of the year, from July to November. The probable reason for the high growth rate of grayling in the study area is that the fish do not have to waste energy on seasonal migration to the tributaries. Taking into account that grayling biomass production in the middle Yenisei occurs from July to November, we can recommend shifting the dates of commercial fishing for grayling to the end of this period-November-December.

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Держатели документа:
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, 79 Svobodny, Krasnoyarsk 660041, Russia.
Inst Biophys, Fed Res Ctr Krasnoyarsk Sci Ctr SB RAS, Akademgorodok, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Zuev, Ivan V.; Andrushchenko, Pavel Yu.; Zotina, Tatiana A.; Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory; Krasnoyarsk Regional Scientific Foundation [20-44-240009]

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