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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">izvkgtu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия КГТУ</journal-title><trans-title-group xml:lang="en"><trans-title>KSTU News</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1997-3071</issn><publisher><publisher-name>Калининградский государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.46845/1997-3071-2024-75-26-39</article-id><article-id custom-type="elpub" pub-id-type="custom">izvkgtu-66</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>БИОЛОГИЯ, ЭКОЛОГИЯ И РЫБНОЕ ХОЗЯЙСТВО</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOLOGY, ECOLOGY AND FISHERIES</subject></subj-group></article-categories><title-group><article-title>Черты биологии антарктического криля Euphausia superba Dana, 1850 (Euphausiacea: Euphausiidae) из бассейна Пауэлла в 2020 г.</article-title><trans-title-group xml:lang="en"><trans-title>Biologic characteristics of Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea: Euphausiidae) from the Powell Basin in 2020</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колесникова</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolesnikova</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александра Дмитриевна Колесникова – магистрант кафедры водных биоресурсов и аквакультуры</p><p>Калининград</p></bio><bio xml:lang="en"><p>Aleksandra D. Kolesnikova – Undergraduate student of the Department of Water Bioresources and Aquaculture</p><p>Kaliningrad</p></bio><email xlink:type="simple">kolesnikova_aleksasha@bk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Судник</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sudnik</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Светлана Александровна Судник – кандидат биологических наук, доцент кафедры водных биоресурсов и аквакультуры</p><p>Калининград</p></bio><bio xml:lang="en"><p>Svetlana А. Sudnik – PhD in Biology, Associate Professor of the Department of Water Bioresources and Aquaculture</p><p>Kaliningrad</p></bio><email xlink:type="simple">svetlana.sudnik@klgtu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Калининградский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kaliningrad State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>19</day><month>03</month><year>2025</year></pub-date><volume>0</volume><issue>75</issue><fpage>26</fpage><lpage>39</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Колесникова А.Д., Судник С.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Колесникова А.Д., Судник С.А.</copyright-holder><copyright-holder xml:lang="en">Kolesnikova A.D., Sudnik S.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://journal.klgtu.ru/jour/article/view/66">https://journal.klgtu.ru/jour/article/view/66</self-uri><abstract><p>Статья посвящена исследованию биологии антарктического криля (Euphausia superba Dana, 1850), массового промыслового вида Антарктического части Атлантики (АчА). Будучи фитопланктофагом, криль является важным звеном в пищевых цепях и распределении первичной продукции. E. superba – высокоценное сырье многих сфер промышленности, играет важную роль в отечественном промысле. В целом, в ходе анализа 805 особей криля из бассейна Пауэлла отмечено преобладание в пробах ювенильных особей, а среди разнополых особей – самок. Общая длина тела криля составила 13,6 – 50,2 мм (при длине карапакса 3,1 – 19,0 мм), индивидуальная масса – 0,02 – 1,20 г. Самцы E. superba бассейна Пауэлла, в среднем, оказались крупнее самок, однако длина карапакса самок была больше. Впервые для криля этого района показано достоверное опережение весового роста над линейным. Как среди самцов, так и среди самок преобладали мелкие особи (длина тела 29,3 – 36,4 мм) с неразвитыми или слабо развитыми гонадами и совокупительными органами, почти созревшие особи встречались редко, их размеры были крупнее (45,3 – 46,5 мм). Также впервые для вида определен гонадосоматический индекс предзрелых самок, который составил 12 – 25 %, и рассчитаны средние размеры наиболее развитых вителлогенных ооцитов – 0,42 х 0,54 мм. Разнокачественность созревания самок, вероятно, связана с особенностями циркуляции вод исследуемого промыслового района и переноса сюда молоди.</p></abstract><trans-abstract xml:lang="en"><p>The article is devoted to the study of the biology of Antarctic krill (Euphausia superba Dana, 1850), a mass commercial species in the Antarctic part of the Atlantic (APA). As a phytoplanktivore, krill is an important link in food chains and primary production distribution. E. superba is a highly valuable raw material for many industries and plays an important role in domestic fishing. In general, during the analysis of 805 krill individuals from the Powell Basin, the predominance of juvenile individuals in the samples was noted, and among heterosexual individuals – females. The total body length of krill was 13.6–50.2 mm (with the length of the carapace 3.1– 19.0 mm). The individual body weight of the individuals was 0.02–1.2 g. Males of E. superba of the Powell basin, on average, turned out to be larger than females, at the same time, but along the length of the carapace, the females reached large maximum sizes. For the first time for krill of this region, a significant advance in weight growth over linear growth was shown. Both males and females were dominated by small individuals (body length 29.3–36.4 mm) with very undeveloped or poorly developed gonads and copulatory organs, almost mature individuals were rare, their sizes were larger (45.3–46.5 mm). For the first time, the gonadosomatic index of precocious females was determined for the species, which amounted to 12–25%. For the first time, the average sizes of the most developed vitellogenic oocytes – 0.42 x 0.54 mm – were calculated for krill in the basin. The heterogeneity of maturation of female krill is probably related to the peculiarities of water circulation in the studied fishing area of the study and the transfer of juveniles here.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>антарктический криль</kwd><kwd>Euphausia superba</kwd><kwd>бассейн Пауэлла</kwd><kwd>длина</kwd><kwd>масса тела</kwd><kwd>размерно-весовая зависимость</kwd><kwd>репродукция</kwd><kwd>размеры ооцитов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>antarctic krill</kwd><kwd>Euphausia superba</kwd><kwd>Powell basin</kwd><kwd>length</kwd><kwd>body weight</kwd><kwd>size-weight dependence</kwd><kwd>reproduction</kwd><kwd>sizes of oocytes</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают большую благодарность сотрудникам института океанологии им. П. П. Ширшова (г. Москва) за предоставление материала &lt;i&gt;E. superba.&lt;/i&gt; Работа выполнена в рамках ИП НИР Научно-образовательного центра имени профессора Н. С. Гаевской ФГБОУ ВО «КГТУ» «Систематика, зоогеография и экология ракообразных Мирового океана», рег. № 13.13.029.2 (ОНИОКР УНИД КГТУ), а также в рамках научного сотрудничества и по заказу ИО РАН, г. Москва.</funding-statement><funding-statement xml:lang="en">The authors express their gratitude to the staff of the P. P. Shirshov Institute of Oceanology (Moscow) for providing &lt;i&gt;E. superba&lt;/i&gt; material.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Quantifying circumpolar summer habitat for Antarctic krill and Ice krill, two key species of the Antarctic marine ecosystem / B. Merkel, P. Trathan, S. Thorpe, E. J. Murphy, H. Pehlke, K. Teschke, G. P. Griffith // ICES Journal Marine Science. 2023. V. 80. N 6. P. 1773–1786.</mixed-citation><mixed-citation xml:lang="en">Merkel В., Trathan P., Thorpe S., Murphy E. 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