{"id":6630,"date":"2017-02-02T19:00:56","date_gmt":"2017-02-02T21:00:56","guid":{"rendered":"https:\/\/blog.mindthegraph.com\/?p=6630"},"modified":"2022-10-14T11:22:01","modified_gmt":"2022-10-14T14:22:01","slug":"ancestral-arthropod","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/da\/forfaedre-arthropod\/","title":{"rendered":"Et skridt t\u00e6ttere p\u00e5 det oprindelige leddyr"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">En nyopdaget art kan bringe os et skridt t\u00e6ttere p\u00e5 det oprindelige leddyr. Denne lille lobopodian-art er cirka 500 millioner \u00e5r gammel og ligner en orm - bortset fra dens 20 til 30 ben. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bortset fra m\u00e6ngden af ben, er dette lille v\u00e6sen kaldet <\/span><i><span style=\"font-weight: 400;\">Ovatiovermis cribratus<\/span><\/i><span style=\"font-weight: 400;\"> har nogle andre interessante tr\u00e6k. Da de levede dybt nede i havet i Kambrium, var de <\/span><i><span style=\"font-weight: 400;\">Ovatiovermis cribratus <\/span><\/i><span style=\"font-weight: 400;\">plejede at forankre sig p\u00e5 havets bund og bruge sine ben til at filtrere vandet. Denne f\u00f8deadf\u00e6rd minder om en lille dans, som du kan se i denne fantastiske 3D-video:<\/span><\/p>\n<p><iframe loading=\"lazy\" title=\"500 millioner \u00e5r gammel lobopodian\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/emUXb8lejNo?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p><span style=\"font-weight: 400;\">Forskere fors\u00f8ger at opbygge leddyrenes evolution\u00e6re tr\u00e6 baseret p\u00e5 disse nye fund. Men to hovedproblemer holder dem stadig tilbage:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Lobopodians er udd\u00f8de. Det betyder, at vi ikke kan f\u00e5 molekyl\u00e6re data til at opbygge deres stamtr\u00e6 p\u00e5 samme m\u00e5de, som vi g\u00f8r med nulevende arter. Vejen udenom er at lede efter fossiler og anatomiske oplysninger, der kan hj\u00e6lpe med at opbygge et evolution\u00e6rt scenarie.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Selvom der er fundet andre lobopodiske fossiler, udviser de en stor diversitet og forskellighed fra hinanden. Blandt mange nutidige fossiler er det sv\u00e6rt at bestemme de sande stamgrene.<\/span><\/li>\n<\/ul>\n<p><a href=\"http:\/\/blogs.biomedcentral.com\/bmcseriesblog\/2017\/01\/31\/newly-discovered-500-million-year-old-species-offers-insights-ancestral-arthropod\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-6631\" src=\"https:\/\/blog.mindthegraph.com\/wp-content\/uploads\/2017\/02\/lobopodian-768x952.jpg\" alt=\"Et skridt t\u00e6ttere p\u00e5 det oprindelige leddyr\" width=\"457\" height=\"566\" srcset=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2017\/02\/lobopodian-768x952.jpg 768w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2017\/02\/lobopodian-768x952-242x300.jpg 242w\" sizes=\"(max-width: 457px) 100vw, 457px\" \/><\/a><\/p>\n<h4><strong>S\u00e5 hvorfor al denne st\u00e5hej om et nyt lobopodisk fossil?<\/strong><\/h4>\n<p><span style=\"font-weight: 400;\">Gruppen af leddyr - som lobopoderne er en del af - er en af de bedst dokumenterede grupper af dyr, der d\u00e6kker 80% af alle kendte arter. Ikke alene afsl\u00f8rer lobopodiernes f\u00f8devaner et vigtigt spor i evolutionen af alle leddyr.<\/span><\/p>\n<blockquote><p><span style=\"font-weight: 400;\">Godt <\/span><i><span style=\"font-weight: 400;\">Ovatiovermis <\/span><\/i><span style=\"font-weight: 400;\">(<\/span><i><span style=\"font-weight: 400;\">Ovatio<\/span><\/i><span style=\"font-weight: 400;\"> - Ovation, <\/span><i><span style=\"font-weight: 400;\">Vermis<\/span><\/i><span style=\"font-weight: 400;\"> - orm), har du afsl\u00f8ret, at forfaderen til &gt;80% af dyrearter var en filter-feeder, rejs dig op og giv dig selv en klapsalve! - Dave Marshall for BioMed Central (<a href=\"http:\/\/blogs.biomedcentral.com\/bmcseriesblog\/2017\/01\/31\/newly-discovered-500-million-year-old-species-offers-insights-ancestral-arthropod\/\">L\u00e6s hele artiklen her<\/a>)<\/span><\/p><\/blockquote>\n<p><a href=\"http:\/\/blogs.biomedcentral.com\/bmcseriesblog\/2017\/01\/31\/newly-discovered-500-million-year-old-species-offers-insights-ancestral-arthropod\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-6632 size-full\" src=\"https:\/\/blog.mindthegraph.com\/wp-content\/uploads\/2017\/02\/ovatiovermis.jpg\" alt=\"Et skridt t\u00e6ttere p\u00e5 det oprindelige leddyr\" width=\"800\" height=\"246\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">P\u00e5 trods af alle de nye oplysninger om de oprindelige leddyr er der stadig et sp\u00f8rgsm\u00e5l: Synes folk, at lobopoder er lige s\u00e5 uhyggelige som deres nulevende sl\u00e6gtninge?<\/span><a href=\"https:\/\/blog.mindthegraph.com\/wp-content\/uploads\/2016\/06\/i-love-science.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-5826\" src=\"https:\/\/blog.mindthegraph.com\/wp-content\/uploads\/2016\/06\/i-love-science.png\" alt=\"Et skridt t\u00e6ttere p\u00e5 det oprindelige leddyr\" width=\"380\" height=\"152\" srcset=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2016\/06\/i-love-science.png 1500w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2016\/06\/i-love-science-300x120.png 300w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2016\/06\/i-love-science-1024x410.png 1024w\" sizes=\"(max-width: 380px) 100vw, 380px\" \/><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>En nyopdaget art kan bringe os et skridt t\u00e6ttere p\u00e5 det oprindelige leddyr. Denne lille lobopodiske art er cirka 500 millioner \u00e5r gammel og ligner en orm - bortset fra dens 20 til 30 ben. Bortset fra antallet af ben har dette lille v\u00e6sen kaldet Ovatiovermis cribratus nogle andre interessante tr\u00e6k. Den lever [...]<\/p>","protected":false},"author":11,"featured_media":6638,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":[],"categories":[959,28],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>One step closer to the ancestral arthropod - Mind the Graph Blog<\/title>\n<meta name=\"description\" content=\"A newly discovered species may bring us one step closer to the ancestral arthropod. This lobopodian species looks like a worm - except for its 30 legs!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mindthegraph.com\/blog\/da\/forfaedre-arthropod\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"One step closer to the ancestral arthropod - Mind the Graph Blog\" \/>\n<meta property=\"og:description\" content=\"A newly discovered species may bring us one step closer to the ancestral arthropod. 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