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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">Samara Journal of Science</journal-id><journal-title-group><journal-title xml:lang="en">Samara Journal of Science</journal-title><trans-title-group xml:lang="ru"><trans-title>Самарский научный вестник</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2309-4370</issn><issn publication-format="electronic">2782-3016</issn><publisher><publisher-name xml:lang="en">Samara State University of Social Sciences and Education</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">635535</article-id><article-id pub-id-type="doi">10.55355/snv2024131106</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Biological Sciences</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Биологические науки</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 data on the blood leukocyte composition of semi-aquatic turtles from the Samara Zoo</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнительные данные о лейкоцитарном составе крови черепах с полуводным образом жизни из Самарского зоопарка</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Romanova</surname><given-names>Elena Borisovna</given-names></name><name xml:lang="ru"><surname>Романова</surname><given-names>Елена Борисовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>doctor of biological sciences, professor of Ecology Department</p></bio><bio xml:lang="ru"><p>доктор биологических наук, профессор кафедры экологии</p></bio><email>romanova@ibbm.unn.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Stolyarova</surname><given-names>Irina Aleksandrovna</given-names></name><name xml:lang="ru"><surname>Столярова</surname><given-names>Ирина Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>master student of Ecology Department</p></bio><bio xml:lang="ru"><p>магистрант кафедры экологии</p></bio><email>irinaisto75@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bakiev</surname><given-names>Andrey Gennadievich</given-names></name><name xml:lang="ru"><surname>Бакиев</surname><given-names>Андрей Геннадьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>candidate of biological sciences, senior researcher of Biodiversity Laboratory</p></bio><bio xml:lang="ru"><p>кандидат биологических наук, старший научный сотрудник лаборатории биоразнообразия</p></bio><email>herpetology@list.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gorelov</surname><given-names>Roman Andreevich</given-names></name><name xml:lang="ru"><surname>Горелов</surname><given-names>Роман Андреевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>candidate of biological sciences, junior researcher of Biodiversity Laboratory</p></bio><bio xml:lang="ru"><p>кандидат биологических наук, младший научный сотрудник лаборатории биоразнообразия</p></bio><email>gorelov.roman@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National Research Lobachevsky State University of Nizhny Novgorod</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский Нижегородский государственный университет им. Н.И. Лобачевского</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Institute of Ecology of the Volga River Basin of the Russian Academy of Sciences – Branch of the Samara Federal Research Center of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт экологии Волжского бассейна РАН – филиал Самарского федерального исследовательского центра РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-03-01" publication-format="electronic"><day>01</day><month>03</month><year>2024</year></pub-date><volume>13</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>44</fpage><lpage>53</lpage><history><date date-type="received" iso-8601-date="2024-08-30"><day>30</day><month>08</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-08-30"><day>30</day><month>08</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Romanova E.B., Stolyarova I.A., Bakiev A.G., Gorelov R.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Романова Е.Б., Столярова И.А., Бакиев А.Г., Горелов Р.А.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Romanova E.B., Stolyarova I.A., Bakiev A.G., Gorelov R.A.</copyright-holder><copyright-holder xml:lang="ru">Романова Е.Б., Столярова И.А., Бакиев А.Г., Горелов Р.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://snv63.ru/2309-4370/article/view/635535">https://snv63.ru/2309-4370/article/view/635535</self-uri><abstract xml:lang="en"><p>The leukocyte blood count of 16 species of five families of semi-aquatic turtles from the Samara Zoo was determined. A comparison of the leukogram of representatives of two genera of the family Emydidae revealed a reduced proportion of heterophils and an increased proportion of basophils in <italic>Graptemys</italic> (<italic>G</italic>. <italic>pseudogeographica</italic>, <italic>G</italic>. <italic>nigrinoda</italic>) compared with <italic>Terrapene</italic> (<italic>T</italic>. <italic>triunguis</italic>, <italic>T</italic>. <italic>ornata</italic>). The leukocyte profile of <italic>Cuora mouhotii</italic> (Geoemydidae) was characterized by an increased content of heterophils, which showed a higher activation of innate immune responses. The most similar in leukocyte composition are the species of the Kinosternidae family of three genera: <italic>Kinosternon</italic>, <italic>Sternotherus</italic> and <italic>Staurotypus</italic>. The clade Trionychia (Trionychidae) differed from the clade Durocryptodira (Emydidae, Geoemydidae and Kinosternidae) by an increased number of heterophils and monocytes, and a low content of eosinophils. The Pleurodira suborder (Chelidae) differed from the Cryptodira suborder (Emydidae, Geoemydidae, Kinosternidae, Trionychidae) by an increased content of agranulocytes. Positive significant correlations of the length of the carapace with the content of heterophils and the values of leukocyte indices (index of the eosinophils and lymphocytes ratio, index of the heterophils and eosinophils ratio, index of the heterophils and lymphocytes ratio) reflecting the increased role of nonspecific resistance of the turtle organism during ontogenesis and negative significant correlations with the content of eosinophils were revealed. The index of the heterophils and lymphocytes ratio, which is an indicator of physiological stress, had the minimum value among the studied species in <italic>Sternotherus odoratus</italic> (Kinosternidae), the maximum value in <italic>C. mouhotii</italic> (Geoemydidae).</p></abstract><trans-abstract xml:lang="ru"><p>Определены лейкоцитарные формулы крови 16 видов пяти семейств черепах, ведущих полуводный образ жизни, из Самарского зоопарка. При сравнении лейкограмм представителей двух родов семейства<italic> </italic>Emydidae выявлены пониженная доля гетерофилов и повышенная доля базофилов у <italic>Graptemys</italic> (<italic>G</italic>. <italic>pseudogeographica</italic>, <italic>G</italic>.<italic> nigrinoda</italic>) по сравнению с <italic>Terrapene</italic> (<italic>T</italic>. <italic>triunguis</italic>, <italic>T</italic>.<italic> ornata</italic>). Лейкоцитарный профиль <italic>Cuora mouhotii</italic> (Geoemydidae) отличался повышенным содержанием гетерофилов, что показывало более высокую активацию врожденных иммунных реакций. Наиболее сходны по лейкоцитарному составу виды семейства Kinosternidae из трех родов: <italic>Kinosternon</italic>, <italic>Sternotherus </italic>и <italic>Staurotypus</italic>. Инфраотряд Trionychia (Trionychidae) отличался от инфраотряда Durocryptodira (Emydidae, Geoemydidae и Kinosternidae) повышенным количеством гетерофилов и моноцитов, невысоким содержанием эозинофилов. Подотряд Pleurodira (Chelidae) отличался от подотряда Cryptodira (Emydidae, Geoemydidae, Kinosternidae, Trionychidae) повышенным содержанием агранулоцитов. Выявлены отражающие усиление роли неспецифической резистентности организма черепах в ходе онтогенеза положительные значимые корреляции длины карапакса с содержанием гетерофилов и значениями лейкоцитарных индексов (соотношения лимфоцитов и эозинофилов, гетерофилов и эозинофилов, гетерофилов и лимфоцитов), отрицательные значимые корреляции с содержанием эозинофилов. Соотношение гетерофилов и лимфоцитов, являющееся показателем физиологического стресса, имело минимальное среди исследованных видов значение у <italic>Sternotherus odoratus</italic> (Kinosternidae), максимальное значение – у <italic>C. mouhotii</italic> (Geoemydidae).</p></trans-abstract><kwd-group xml:lang="en"><kwd>blood cells</kwd><kwd>WBC (white blood cells) leukocyte blood formula</kwd><kwd>integral leukocyte indices</kwd><kwd>Emydidae</kwd><kwd>Geoemydidae</kwd><kwd>Kinosternidae</kwd><kwd>Trionychidae</kwd><kwd>Chelidae</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>клетки крови</kwd><kwd>лейкоцитарная формула крови</kwd><kwd>лейкоцитарные индексы</kwd><kwd>Emydidae</kwd><kwd>Geoemydidae</kwd><kwd>Kinosternidae</kwd><kwd>Trionychidae</kwd><kwd>Chelidae</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Krenz J.G., Naylor G.J.P., Shaffer H.B., Janzen F.J. 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