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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Doklady Biological Sciences</journal-id><journal-title-group><journal-title xml:lang="en">Doklady Biological Sciences</journal-title><trans-title-group xml:lang="ru"><trans-title>Доклады Российской академии наук. Науки о жизни</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2686-7389</issn><issn publication-format="electronic">3034-5057</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">686368</article-id><article-id pub-id-type="doi">10.31857/S2686738925030041</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Comparative analysis of nutritional and biotechnological value of muscle tissue of mesopelagic fishes of the North-East Atlantic region</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнительный анализ пищевой и биотехнологической ценности мышечной ткани мезопелагических рыб Северо-Восточного Атлантического региона</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Voronin</surname><given-names>V. P.</given-names></name><name xml:lang="ru"><surname>Воронин</surname><given-names>В. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Institute of Biology </p></bio><bio xml:lang="ru"><p>Институт биологии</p></bio><email>voronen-viktor@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Artemenkov</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Артеменков</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>voronen-viktor@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Orlov</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Орлов</surname><given-names>А. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>voronen-viktor@mail.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Murzina</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Мурзина</surname><given-names>С. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Institute of Biology </p></bio><bio xml:lang="ru"><p>Институт биологии </p></bio><email>voronen-viktor@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Karelian Research Centre of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Федеральное государственное бюджетное учреждение науки Федеральный исследовательский центр “Карельский научный центр Российской академии наук”</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Russian Federal Research Institute of Fisheries and Oceanography (VNIRO)</institution></aff><aff><institution xml:lang="ru">Федеральное государственное бюджетное научное учреждение “Всероссийский научно-исследовательский институт рыбного хозяйства и океанографии”</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Shirshov Institute of Oceanology of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Федеральное государственное бюджетное учреждение науки “Институт океанологии им. П.П. Ширшова Российской академии наук”</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">4Федеральное государственное бюджетное учреждение науки “Институт проблем экологии и эволюции им. А.Н. Северцова Российской академии наук”</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-06-15" publication-format="electronic"><day>15</day><month>06</month><year>2025</year></pub-date><volume>522</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>335</fpage><lpage>344</lpage><history><date date-type="received" iso-8601-date="2025-06-29"><day>29</day><month>06</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-06-29"><day>29</day><month>06</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/2686-7389/article/view/686368">https://journals.eco-vector.com/2686-7389/article/view/686368</self-uri><abstract xml:lang="en"><p>A comparative analysis of some nutritional and biotechnological characteristics of muscle tissue of the most widespread and abundant mesopelagic fish species inhabiting the Irminger Sea (North Atlantic) was carried out. At the level of lipid metabolism, potential nutritional value was established for non-commercial <italic>Notoscopelus kroyeri</italic> and <italic>Serrivomer beanii</italic> along with the commercial beaked redfish <italic>Sebastes mentella</italic>. For <italic>Lampanyctus macdonaldi</italic> and, partially, <italic>Borostomias antarcticus</italic>, possible biotechnological value was shown in terms of extracting individual valuable molecules and substances of lipid nature. The other studied species (<italic>Bathylagus euryops</italic>, <italic>Chauliodus sloani</italic>, <italic>Malacosteus niger</italic>, <italic>Scopelogadus beanii</italic>, <italic>Stomias boa</italic>), as well as <italic>B. antarcticus</italic>, are very promising for their use in aquaculture in the development of innovative feed compositions and additives for them. It was found that the depth and area of catch don’t have a significant effect on the nutritional and biotechnological characteristics of the muscle tissue of the studied species. The exception is <italic>B. euryops</italic>, the characteristics under consideration of which vary depending on the area of catch, and for <italic>S. mentella</italic> and <italic>S. beanii</italic> – on the depth of catch. The results of the study can serve as a basis for the development and improvement of methods and protocols for the rational use of deep-sea biological resources in the process of their development in the North Atlantic region, and also determine the areas of practical application of these species and the type of products obtained from them or with their use (feed, additive, pure substance, composition, functional food product, etc.).</p></abstract><trans-abstract xml:lang="ru"><p>Проведена сравнительная оценка некоторых пищевых и биотехнологических характеристик мышечной ткани наиболее распространенных и массовых мезопелагических видов рыб, обитающих в море Ирмингера (Северная Атлантика). На уровне липидного обмена установлена потенциальная пищевая ценность для непромысловых <italic>Notoscopelus kroyeri</italic> и <italic>Serrivomer beanii</italic> наряду с промысловым окунем-клювачом <italic>Sebastes mentella</italic>. Для <italic>Lampanyctus macdonaldi</italic> и, частично, <italic>Borostomias antarcticus</italic> показана возможная биотехнологическая ценность в части извлечения отдельных ценных молекул и веществ липидной природы. Остальные исследованные виды (<italic>Bathylagus euryops</italic>, <italic>Chauliodus sloani</italic>, <italic>Malacosteus niger</italic>, <italic>Scopelogadus beanii</italic>, <italic>Stomias boa</italic>), а также <italic>B. antarcticus</italic> представляют большую перспективность для их использования в области аквакультуры при разработке инновационных композиций кормов и добавок для них. Установлено, что глубина и район вылова не оказывают значительного влияния на пищевые и биотехнологические характеристики мышечной ткани исследованных видов. Исключением являются <italic>B. euryops</italic>, рассматриваемые характеристики которого изменяются в зависимости от района вылова, а для <italic>S. mentella</italic> и <italic>S. beanii – </italic>от<italic> </italic>глубины вылова. Результаты исследования могут использоваться для разработки и совершенствования методов и протоколов рационального использования глубоководных биологических ресурсов в процессе их освоения в Северо-Атлантическом регионе, а также определяют области практического применения этих видов и тип получаемой из них или с их использованием продукции (корм, добавка, чистое вещество, композиция, функциональный продукт питания и др.).</p></trans-abstract><kwd-group xml:lang="en"><kwd>lipids</kwd><kwd>fatty acids</kwd><kwd>nutritional and biotechnological indexes</kwd><kwd>mesopelagic fish</kwd><kwd>Irminger Sea</kwd><kwd>North Atlantic</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>липиды</kwd><kwd>жирные кислоты</kwd><kwd>пищевые и биотехнологические индексы</kwd><kwd>мезопелагические рыбы</kwd><kwd>море Ирмингера</kwd><kwd>Северная Атлантика</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования РФ</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of science and higher education of Russian Federation</institution></institution-wrap></funding-source></award-group></funding-group></article-meta><fn-group><fn xml:lang="en"><p>Presented by Academician of the RAS N.N. 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