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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">zootech</journal-id><journal-title-group><journal-title xml:lang="ru">Зоотехническая наука Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Zootechnical Science of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0134-9732</issn><publisher><publisher-name>Научно-практический центр Национальной академии наук Беларуси по животноводству</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zootech-1230</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>ТЕХНОЛОГИЯ ПРОИЗВОДСТВА, ЗООГИГИЕНА, СОДЕРЖАНИЕ</subject></subj-group></article-categories><title-group><article-title>ВНЕШНИЕ ПОЛОСПЕЦИФИЧЕСКИЕ ПРИЗНАКИ В СТРОЕНИИ СПИННЫХ ЖУЧЕК ЛИЧИНОК И МОЛОДИ СТЕРЛЯДИ</article-title><trans-title-group xml:lang="en"><trans-title>EXTERNAL SEX SPECIFIC FEATURES IN THE STRUCTURE OF SCUTES OF LARVAE AND JUVENILES OF STERLET</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>Барулин</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Barulin</surname><given-names>N. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>УО «Белорусская государственная орденов Октябрьской Революции и Трудового Красного Знамени сельскохозяйственная академия»</institution></aff><aff xml:lang="en"><institution>Belarusian State Agricultural Academy</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>12</day><month>08</month><year>2022</year></pub-date><volume>52</volume><issue>2</issue><fpage>89</fpage><lpage>99</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Барулин Н.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Барулин Н.В.</copyright-holder><copyright-holder xml:lang="en">Barulin N.V.</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://zootech.belal.by/jour/article/view/1230">https://zootech.belal.by/jour/article/view/1230</self-uri><abstract><p>Нами впервые в практике аквакультуры установлено, что спинные костные пластинки созревающей стерляди имеют достоверные морфологические отличия, которые зависят от пола. Для оценки морфологического строения спинных костных пластинок предлагается определять две группы показателей, характеризующих форму спинных костных пластинок, а также строение их зубцов. Мы определили, что у самцов стерляди спинные костные пластинки более вытянуты в ширину и имеют более сплющенную форму. Спинные костные пластинки самцов также имеют более длинные и заострённые зубцы, количество которых больше, чем у самок. Нами впервые обнаружено, что установленные закономерности в строении спинных костных пластин стерляди сохраняются также у молоди стерляди средней длиной 24,8±1,5 см и у личинок стерляди средней длиной 70,3±3,6 мм. Наши результаты создают методологические основы для мировой практики аквакультуры для разработки систем ранней и сверхранней прижизненной идентификации пола всех представителей семейства Acipenseridae , в том числе на ранних стадиях онтогенеза.</p></abstract><trans-abstract xml:lang="en"><p>We were the first in the practice of aquaculture who found that dorsal scutes of maturing sterlet had significant sex-dependent morphological differences. To assess the morphological structure of the dorsal scutes, it was proposed to define two groups of indicators characterizing the scutes shape, as well as the structure of the cusps of scutes. We found that dorsal scutes of males are more extended in width and have a flattened shape. Dorsal scutes of males have long and thin cusps of larger larger than that of females. For the first time it was found that the established dependence on the structure of dorsal scutes of sterlet is also saved in juveniles with an average length of 24.8 ± 1.5 cm and larvae with an average length of 70.3 ± 3.6 mm. Our results form a methodological basis for global aquaculture practice in effort to develop systems of early and very early sex identification of all Acipenseridae, including the one on the early stages of ontogeny.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>стерлядь</kwd><kwd>определение пола</kwd><kwd>внешний морфологический признак</kwd><kwd>спинные костные пластинки</kwd></kwd-group><kwd-group xml:lang="en"><kwd>sterlet</kwd><kwd>sex determination</kwd><kwd>external morphological characteristics</kwd><kwd>dorsal scutes</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Барулин, Н. В. 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