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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">actabiomedica</journal-id><journal-title-group><journal-title xml:lang="ru">Acta Biomedica Scientifica</journal-title><trans-title-group xml:lang="en"><trans-title>Acta Biomedica Scientifica</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2541-9420</issn><issn pub-type="epub">2587-9596</issn><publisher><publisher-name>Scientific Centre for Family Health and Human Reproduction Problems</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29413/ABS.2024-9.5.27</article-id><article-id custom-type="elpub" pub-id-type="custom">actabiomedica-5063</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>ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>EXPERIMENTAL RESEARCHES</subject></subj-group></article-categories><title-group><article-title>Влияние фотопериодических условий Северо-Запада России и экзогенного мелатонина на психоэмоциональный статус сирийского хомяка (Mesocricetus auratus)</article-title><trans-title-group xml:lang="en"><trans-title>Effect of northwestern photoperiod and exogenous melatonin on the psychoemotional state of the Syrian hamsters (Mesocricetus auratus)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4740-2141</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Антонова</surname><given-names>Е. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Antonova</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Антонова Екатерина Петровна – кандидат биологических наук, старший научный сотрудник, руководитель лаборатории экологической физиологии животных</p><p>185910, г. Петрозаводск,ул. Пушкинская, 11</p></bio><bio xml:lang="en"><p>Ekaterina P. Antonova – Cand. Sc. (Biol.), Senior Research Officer, Head of the Laboratory of Animal Ecophysiology</p><p>Pushkinskaya str. 11, Petrozavodsk 185910</p></bio><email xlink:type="simple">antonova88ep@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5064-3731</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баишникова</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Baishnikova</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баишникова Ирина Валерьевна – кандидат биологических наук, старший научный сотрудник лаборатории экологической физиологии животных</p><p>185910, г. Петрозаводск,ул. Пушкинская, 11</p></bio><bio xml:lang="en"><p>Irina V. Baishnikova – Cand. Sc. (Biol.), Senior Research Officer at the Laboratory of Animal Ecophysiology</p><p>Pushkinskaya str. 11, Petrozavodsk 185910</p></bio><email xlink:type="simple">iravbai@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3042-8617</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кижина</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kizhina</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кижина Александра Геннадьевна – кандидат биологических наук, старший научный сотрудник лаборатории экологической физиологии животных</p><p>185910, г. Петрозаводск,ул. Пушкинская, 11</p></bio><bio xml:lang="en"><p>Aleksandra G. Kizhina – Cand. Sc. (Biol.), Senior Research Officer at the Laboratory of Animal Ecophysiology</p><p>Pushkinskaya str. 11, Petrozavodsk 185910</p></bio><email xlink:type="simple">golubewa81@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7085-4154</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Илюха</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilyukha</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Илюха Виктор Александрович – доктор биологических наук, главный научный сотрудник лаборатории экологической физиологии животных; старший научный сотрудник</p><p>185910, г. Петрозаводск, ул. Пушкинская, 11</p><p>152742, Ярославская обл., Некоузский р-н, п. Борок, 109</p></bio><bio xml:lang="en"><p>Viktor A. Ilyukha – Dr. Sc. (Biol.), Chief Research Officer at the Laboratory of Animal Ecophysiology; Senior Research Office</p><p>Pushkinskaya str. 11, Petrozavodsk 185910</p><p>109, Borok 152742, Nekouzsky District, Yaroslavl Region</p></bio><email xlink:type="simple">ilyukha.62@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт биологии, ФИЦ «Карельский научный центр РАН»</institution></aff><aff xml:lang="en"><institution>Institute of Biology, Karelian Research Centre of the Russian Academy of Sciences</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт биологии, ФИЦ «Карельский научный центр РАН»; ФГБУН Институт биологии&#13;
внутренних вод им. И.Д. Папанина РАН</institution></aff><aff xml:lang="en"><institution>Institute of Biology, Karelian Research Centre of the Russian Academy of Sciences; Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>24</day><month>11</month><year>2024</year></pub-date><volume>9</volume><issue>5</issue><fpage>251</fpage><lpage>260</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Антонова Е.П., Баишникова И.В., Кижина А.Г., Илюха В.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Антонова Е.П., Баишникова И.В., Кижина А.Г., Илюха В.А.</copyright-holder><copyright-holder xml:lang="en">Antonova E.P., Baishnikova I.V., Kizhina A.G., Ilyukha V.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://www.actabiomedica.ru/jour/article/view/5063">https://www.actabiomedica.ru/jour/article/view/5063</self-uri><abstract><p>Обоснование. Среди факторов окружающей среды, влияющих на рост частоты возникновения психоэмоциональных состояний, большое значение придаётся световому режиму. Однако механизмы регуляции поведения млекопитающих в нестандартных световых условиях и роль гормона мелатонина в этом процессе до конца не исследованы.Цель исследования. Оценить воздействие специфических световых условий Севера и мелатонина на поведение Mesocricetus auratus.Методы. Животные были разделены на 4 группы: LD (контроль), NL (световые условия Севера), а также LD + mel и NL + mel (мелатонин, 100 мкг/ животное). Исследование поведенческих реакций, уровня эмоционального и тревожно-фобического состояния животных проводили в установках «Открытое поле» и «Тёмная камера с отверстиями».Результаты. Содержание M. auratus в NL оказало негативное влияние на их поведение – выявлено снижение двигательной активности (горизонтальной и вертикальной) и «норкового рефлекса» (обследования отверстий), увеличение количества реакций замирания и груминга и времени первого выглядывания из верхнего отверстия. Показано, что мелатонин способствовал увеличению ориентировочно-исследовательской активности и снижению количества актов тревожности в NL + mel по сравнению с NL; противоположное воздействие гормона на данные показатели наблюдалось в LD + mel.Заключение. Полученные результаты указывают на важную роль фотопериода и мелатонина в регуляции поведения сезонно размножающихся видов.</p></abstract><trans-abstract xml:lang="en"><p>Background. Among the environmental factors that influence the increase in the frequency of occurrence of psychoemotional states, great importance is attributed to the light conditions. However, the mechanisms of behaviour regulation in the mammals in non-standard light conditions and the role of melatonin in this process have not been fully studied.The aim of the study. To assess the effects of specific northern light conditions and melatonin on the behavior of Mesocricetus auratus.Methods. The animals were divided into 4 groups: LD (control), NL (northern light conditions), and LD + mel and NL + mel (melatonin, 100 μg/animal). The study of behavioral reactions, the level of emotional and phobic anxiety state of animals was carried out in the “Open field” and “Dark chamber with holes” installations.Results. Keeping M. auratus in NL had a negative effect on their behavior – a decrease in motor activity (horizontal and vertical) and the “hole-exploratory behavior”, an increase in the number of freezing and grooming reactions and the time of the first peeking out of the upper hole were revealed. It was shown that melatonin contributed to an increase in exploratory activity and a decrease in the number of anxiety acts in NL + mel group compared to NL group; the opposite effect of the hormone on these parameters was observed in LD + mel group.Conclusion. The obtained results indicate the important role of photoperiod and melatonin in regulating the behavior of seasonally breeding species.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>млекопитающие</kwd><kwd>мелатонин</kwd><kwd>световой режим</kwd><kwd>открытое поле</kwd><kwd>поведение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>mammals</kwd><kwd>melatonin</kwd><kwd>light conditions</kwd><kwd>open field</kwd><kwd>behavior</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Финансовое обеспечение исследований осуществлялось из средств федерального бюджета на выполнение государственного задания ФИЦ «Карельский научный центр РАН» (FMEN-2022-0003).</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">Pevet P, Klosen P, Felder-Schmittbuhl MP. The hormone melatonin: Animal studies. 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