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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Advances in Current Biology</journal-id><journal-title-group><journal-title xml:lang="en">Advances in Current Biology</journal-title><trans-title-group xml:lang="ru"><trans-title>Успехи современной биологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0042-1324</issn><issn publication-format="electronic">3034-6347</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">653259</article-id><article-id pub-id-type="doi">10.31857/S0042132423020084</article-id><article-id pub-id-type="edn">KMHBIY</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></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Variability of the Gene Cytochrome <italic>b</italic> mtDNA of the Tundra Vole (<italic>Alexandromys oeconomus</italic> Pallas, 1776) in North-Eastern Asia and Alaska</article-title><trans-title-group xml:lang="ru"><trans-title>Изменчивость гена цитохрома <italic>b</italic> мтДНК полевки-экономки (<italic>Alexandromys oeconomus</italic> Pallas, 1776) северо-восточной Азии и Аляски</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pereverzeva</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Переверзева</surname><given-names>В. В.</given-names></name></name-alternatives><email>vvpereverzeva@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dokuchaev</surname><given-names>N. E.</given-names></name><name xml:lang="ru"><surname>Докучаев</surname><given-names>Н. Е.</given-names></name></name-alternatives><email>vvpereverzeva@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Primak</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Примак</surname><given-names>А. А.</given-names></name></name-alternatives><email>vvpereverzeva@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dubinin</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Дубинин</surname><given-names>Е. А.</given-names></name></name-alternatives><email>vvpereverzeva@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Biological Problems of the North, Far Eastern Branch of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт биологических проблем Севера ДВО РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-03-01" publication-format="electronic"><day>01</day><month>03</month><year>2023</year></pub-date><volume>143</volume><issue>2</issue><issue-title xml:lang="ru"/><fpage>149</fpage><lpage>164</lpage><history><date date-type="received" iso-8601-date="2025-02-02"><day>02</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Российская академия наук</copyright-statement><copyright-year>2023</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/0042-1324/article/view/653259">https://journals.eco-vector.com/0042-1324/article/view/653259</self-uri><abstract xml:lang="en"><p id="idm45181324226400">The nucleotide sequence polymorphism and haplotype diversity of the cytochrome <italic>b</italic> gene in samples of the tundra vole (<italic>Alexandromys oeconomus</italic>) from North-Eastern Asia and Alaska were studied. 63 haplotypes of <italic>cytb</italic> gene (51 variants of Central Asian and 12 of Beringian genetic lineages), differing among themselves by 94 mutations, were found. The Upper Kolyma River is inhabited by voles of the Central Asian clade. Mixed population of this species in the basin of the Omolon River (right tributary of the Kolyma River) was found. In Chukotka and Alaska, only specimens of the Beringian phylogroup were found. Genetic differences between all samples are statistically significant. Genetic data of <italic>A. oeconomus</italic> populations of the Kolyma River basin, Alaska, and Northern Okhotomorye were compared. A total of 231 substitutions in 226 sites were found in the nucleotide sequence of cytochrome <italic>b</italic> mtDNA gene in voles from both clades. The values of molecular diversity indices testify to the stability of populations with a high value of effective abundance over a long period of time. An analysis of population gene pool formation was performed and a proposed reconstruction of the complex dispersal history of this species across North-Eastern Asia was proposed.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181324223424">Исследован полиморфизм нуклеотидной последовательности и гаплотипическое разнообразие гена цитохрома <italic>b</italic> в выборках полевки-экономки (<italic>Alexandromys oeconomus</italic>) с территории Северо-Восточной Азии и Аляски. Найдено 63 гаплотипа гена цитохрома <italic>b</italic> (51 вариант центральноазиатской генетической линии и 12 – берингийской), различающихся между собой 94 мутациями. Бассейны притоков верховьев р. Колыма заселены полевками центральноазиатской клады. В бассейне р. Омолон обнаружена смешанная популяция этого вида. На Чукотке и Аляске найдены особи только берингийской филогруппы. Генетические различия между всеми выборками статистически достоверны. Проведено сравнение генетических данных популяций <italic>A. oeconomus</italic> бассейна р. Колыма, Чукотки, Аляски и Северного Охотоморья. В общей сложности в нуклеотидной последовательности гена цитохрома <italic>b</italic> мтДНК у полевок-экономок обеих клад обнаружена 231 замена в 226 сайтах. Значения индексов молекулярного разнообразия свидетельствуют о стабильности популяций, имеющих в течение длительного времени высокое значение эффективной численности. Проведен анализ формирования генофондов популяций и предложена вероятная реконструкция сложной истории расселения этого вида по территории Северо-Восточной Азии.</p></trans-abstract><kwd-group xml:lang="en"><kwd>root vole</kwd><kwd><italic>Alexandromys oeconomus</italic></kwd><kwd>cytochrome <italic>b </italic>(<italic>cytb</italic>) gene</kwd><kwd>genetic polymorphism</kwd><kwd>phylogenetic analysis</kwd><kwd>North-Eastern Asia</kwd><kwd>Alaska</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>полевка-экономка</kwd><kwd><italic>Alexandromys oeconomus</italic></kwd><kwd>ген цитохрома <italic>b</italic> (<italic>cytb</italic>)</kwd><kwd>генетический полиморфизм</kwd><kwd>филогенетический анализ</kwd><kwd>Северо-Восточная Азия</kwd><kwd>Аляска</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Воронцов Н.Н., Ляпунова Е.А., Боескоров Г.Г., Ревин Ю.В. 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