{"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\/sv_se\/forfader-artropoder\/","title":{"rendered":"Ett steg n\u00e4rmare den ursprungliga leddjuret"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">En nyuppt\u00e4ckt art kan f\u00f6ra oss ett steg n\u00e4rmare den ursprungliga leddjuret. Denna lilla lobopodian-art \u00e4r cirka 500 miljoner \u00e5r gammal och ser ut som en mask - med undantag f\u00f6r sina 20 till 30 ben. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bortsett fr\u00e5n antalet ben, denna lilla varelse som kallas <\/span><i><span style=\"font-weight: 400;\">Ovatiovermis cribratus<\/span><\/i><span style=\"font-weight: 400;\"> har n\u00e5gra andra intressanta egenskaper. N\u00e4r de levde djupt nere i havet under kambrium <\/span><i><span style=\"font-weight: 400;\">Ovatiovermis cribratus <\/span><\/i><span style=\"font-weight: 400;\">brukade f\u00f6rankra sig p\u00e5 havsbotten och anv\u00e4nde sina ben f\u00f6r att filtrera vattnet. Detta matningsbeteende p\u00e5minner om en liten dans, som du kan se i denna fantastiska 3D-video:<\/span><\/p>\n<p><iframe loading=\"lazy\" title=\"500 miljoner \u00e5r gammal 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;\">Forskare f\u00f6rs\u00f6ker bygga upp ett evolution\u00e4rt tr\u00e4d f\u00f6r leddjuren baserat p\u00e5 dessa nya r\u00f6n. Men tv\u00e5 viktiga fr\u00e5gor h\u00e5ller dem fortfarande tillbaka:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Lobopodians \u00e4r utd\u00f6da. Det inneb\u00e4r att vi inte kan f\u00e5 fram molekyl\u00e4ra data f\u00f6r att bygga upp deras sl\u00e4kttr\u00e4d p\u00e5 samma s\u00e4tt som vi g\u00f6r med levande arter. L\u00f6sningen \u00e4r att leta efter fossil och anatomisk information som kan hj\u00e4lpa oss att bygga upp ett evolution\u00e4rt scenario.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">\u00c4ven om andra lobopodiska fossil har hittats, uppvisar de en stor m\u00e5ngfald och olikhet sinsemellan. Bland m\u00e5nga nutida fossil \u00e4r det sv\u00e5rt att fastst\u00e4lla verkliga sl\u00e4ktgrenar.<\/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=\"Ett steg n\u00e4rmare den ursprungliga leddjuret\" 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 varf\u00f6r all denna uppst\u00e5ndelse kring en ny lobopodisk fossil?<\/strong><\/h4>\n<p><span style=\"font-weight: 400;\">Gruppen leddjur - som lobopoderna tillh\u00f6r - \u00e4r en av de mest v\u00e4lbevarade djurgrupperna och omfattar 80% av alla k\u00e4nda arter. Dessutom avsl\u00f6jar lobopodiernas matvanor ett viktigt sp\u00e5r i utvecklingen av alla leddjur.<\/span><\/p>\n<blockquote><p><span style=\"font-weight: 400;\">Tja <\/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;\"> - mask), har du avsl\u00f6jat att f\u00f6rfadern till &gt;80% av djurarterna var en filtermatare, st\u00e4ll dig upp och ge dig sj\u00e4lv en appl\u00e5d! - Dave Marshall f\u00f6r BioMed Central (<a href=\"http:\/\/blogs.biomedcentral.com\/bmcseriesblog\/2017\/01\/31\/newly-discovered-500-million-year-old-species-offers-insights-ancestral-arthropod\/\">L\u00e4s hela artikeln h\u00e4r<\/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=\"Ett steg n\u00e4rmare den ursprungliga leddjuret\" width=\"800\" height=\"246\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">Trots all ny information om den ur\u00e5ldriga leddjuret kvarst\u00e5r en fr\u00e5ga: tycker m\u00e4nniskor att lobopoder \u00e4r lika l\u00e4skiga som deras levande sl\u00e4ktingar?<\/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=\"Ett steg n\u00e4rmare den ursprungliga leddjuret\" 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 nyuppt\u00e4ckt art kan f\u00f6ra oss ett steg n\u00e4rmare den ursprungliga leddjuret. Denna lilla lobopodian-art \u00e4r cirka 500 miljoner \u00e5r gammal och ser ut som en mask - f\u00f6rutom sina 20 till 30 ben. Bortsett fr\u00e5n antalet ben har denna lilla varelse som kallas Ovatiovermis cribratus n\u00e5gra andra intressanta egenskaper. 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. 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