{"id":3486,"date":"2026-04-21T06:40:05","date_gmt":"2026-04-21T04:40:05","guid":{"rendered":"https:\/\/www.hayat.dk\/da-dk\/?p=3486"},"modified":"2026-04-21T07:42:29","modified_gmt":"2026-04-21T05:42:29","slug":"dna-studie-stenalderfolk-forsvandt-efter-dramatisk-befolkningskollaps","status":"publish","type":"post","link":"https:\/\/www.hayat.dk\/da-dk\/videnskab\/dna-studie-stenalderfolk-forsvandt-efter-dramatisk-befolkningskollaps\/3486\/","title":{"rendered":"DNA-studie: Stenalderfolk forsvandt efter dramatisk befolkningskollaps"},"content":{"rendered":"<p>Et internationalt forskerhold ledet af K\u00f8benhavns Universitet har fundet spor af et markant befolkningskollaps i stenalderen \u2013 efterfulgt af indvandring fra Sydeuropa.<\/p>\n<p>Fundet stammer fra en af Frankrigs st\u00f8rste stenaldergrave og udfordrer den hidtidige forst\u00e5else af den s\u00e5kaldte neolitiske tilbagegang, hvor store dele af Europas befolkning pludselig blev reduceret.<\/p>\n<h3>To befolkninger \u2013 \u00e9t gravsted<\/h3>\n<p>Studiet bygger p\u00e5 DNA fra 132 mennesker begravet i en j\u00e6ttestue n\u00e6r Bury, nord for Paris.<\/p>\n<p>Analyserne viser, at gravstedet blev brugt i to perioder \u2013 f\u00f8r og efter et befolkningsfald omkring 3.000 f.Kr. \u2013 og at de to grupper ikke er genetisk besl\u00e6gtede.<\/p>\n<p>\u201cVi ser et tydeligt genetisk brud. Den f\u00f8rste gruppe ligner andre stenalderb\u00f8nder i Nordfrankrig og Tyskland, mens den anden har r\u00f8dder i Sydeuropa,\u201d<br \/>\nsiger Frederik Valeur Seersholm fra K\u00f8benhavns Universitet.<\/p>\n<h3>Spor af pest og krise<\/h3>\n<p>Forskerne har analyseret alt DNA i knoglerne \u2013 ogs\u00e5 fra sygdomme.<\/p>\n<p>De fandt spor af blandt andet pestbakterien Yersinia pestis og bakterien Borrelia recurrentis, som forbindes med tilbagefaldsfeber og ofte optr\u00e6der under kriser.<\/p>\n<p>\u201cPest var til stede, men kan ikke alene forklare kollapset. Det kan v\u00e6re en kombination af sygdom, klima eller andre katastrofer,\u201d<br \/>\nsiger lektor Martin Sikora.<\/p>\n<p>Samtidig viser knogleanalyser en us\u00e6dvanlig h\u00f8j d\u00f8delighed \u2013 is\u00e6r blandt unge.<\/p>\n<h3>Fra storfamilier til magtlinjer<\/h3>\n<p>DNA\u2019et afsl\u00f8rer ogs\u00e5 et markant skift i sociale strukturer.<\/p>\n<p>I den f\u00f8rste periode blev flere generationer fra samme storfamilie begravet sammen. I den senere periode dominerer \u00e9n mandlig sl\u00e6gtslinje \u2013 et m\u00f8nster, der minder om arveligt lederskab.<\/p>\n<p>\u201cDet tyder p\u00e5, at den nye befolkning havde helt andre sociale strukturer,\u201d siger Seersholm.<\/p>\n<h3>Nyt kapitel i Europas historie<\/h3>\n<p>Fundet peger p\u00e5, at den neolitiske tilbagegang var mere udbredt end hidtil antaget \u2013 og ikke kun ramte Nordeuropa.<\/p>\n<p>\u201cVi ser en hidtil overset indvandring fra Sydeuropa, der udfylder tomrummet efter kollapset,\u201d<br \/>\nsiger Seersholm.<\/p>\n<p>Det kan ogs\u00e5 forklare, hvorfor j\u00e6ttestuer og andre store stenmonumenter pludselig oph\u00f8rer i store dele af Europa.<\/p>\n<p>\u201cBefolkningen bag dem forsvandt ganske enkelt,\u201d siger han.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nye analyser af 5.000 \u00e5r gamle skeletter fra Frankrig viser pest, h\u00f8j d\u00f8delighed og indvandring \u2013 og afsl\u00f8rer et hidtil overset skifte i Europas befolkning.<\/p>\n","protected":false},"author":2,"featured_media":3491,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":{"subtitle":"Nye analyser af 5.000 \u00e5r gamle skeletter fra Frankrig viser pest, h\u00f8j d\u00f8delighed og indvandring \u2013 og afsl\u00f8rer et hidtil overset skifte i Europas befolkning.","format":"standard","override":[{"template":"3","parallax":"1","fullscreen":"1","layout":"right-sidebar","sidebar":"default-sidebar","second_sidebar":"default-sidebar","share_position":"hide","share_float_style":"share-monocrhome","show_share_counter":"1","show_view_counter":"1","show_featured":"1","show_post_meta":"1","show_post_author":"1","show_post_author_image":"1","show_post_date":"1","post_date_format":"custom","post_date_format_custom":"j. F Y - H:i","show_post_category":"1","show_post_reading_time":"0","post_reading_time_wpm":"300","post_calculate_word_method":"str_word_count","show_zoom_button":"0","zoom_button_out_step":"2","zoom_button_in_step":"3","show_post_tag":"1","show_comment_section":"1","number_popup_post":"1","show_author_box":"0","show_post_related":"0","show_inline_post_related":"0"}],"image_override":[{"single_post_thumbnail_size":"no-crop","single_post_gallery_size":"crop-715"}],"trending_post_position":"meta","trending_post_label":"Trending","sponsored_post_label":"Sponsored by","disable_ad":"0"},"jnews_primary_category":[],"footnotes":""},"categories":[747,748,11,30,40],"tags":[753,493,750,749,751,752],"class_list":["post-3486","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arkaeologi","category-historie","category-kultur","category-sundhed","category-videnskab","tag-befolkning","tag-europa","tag-frederik-valeur-seersholm","tag-koebenhavns-universitet","tag-laure-salanova","tag-martin-sikora"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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