{"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\/fi\/esi-maasyopalaiset\/","title":{"rendered":"Askel l\u00e4hemm\u00e4s niveljalkaisen esi-is\u00e4\u00e4"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">\u00c4skett\u00e4in l\u00f6ydetty laji saattaa tuoda meid\u00e4t askeleen l\u00e4hemm\u00e4ksi niveljalkaisten esi-is\u00e4\u00e4. T\u00e4m\u00e4 pieni lobopodian-laji on noin 500 miljoonaa vuotta vanha, ja se n\u00e4ytt\u00e4\u00e4 madolta - lukuun ottamatta sen 20-30 jalkaa. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Lukuun ottamatta jalkojen m\u00e4\u00e4r\u00e4\u00e4, t\u00e4m\u00e4 pieni olento nimelt\u00e4 - <\/span><i><span style=\"font-weight: 400;\">Ovatiovermis cribratus<\/span><\/i><span style=\"font-weight: 400;\"> on muitakin mielenkiintoisia ominaisuuksia. Kambriumin kaudella syv\u00e4ll\u00e4 meress\u00e4 el\u00e4nyt <\/span><i><span style=\"font-weight: 400;\">Ovatiovermis cribratus <\/span><\/i><span style=\"font-weight: 400;\">ankkuroitui meren pohjaan ja k\u00e4ytti jalkojaan veden suodattamiseen. T\u00e4m\u00e4 ruokintak\u00e4ytt\u00e4ytyminen muistuttaa pient\u00e4 tanssia, kuten voit n\u00e4hd\u00e4 t\u00e4ll\u00e4 h\u00e4mm\u00e4stytt\u00e4v\u00e4ll\u00e4 3D-videolla:<\/span><\/p>\n<p><iframe loading=\"lazy\" title=\"500 miljoonaa vuotta vanha 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;\">Tutkijat yritt\u00e4v\u00e4t rakentaa niveljalkaisten evoluutiopuuta n\u00e4iden uusien l\u00f6yd\u00f6sten perusteella. Kaksi p\u00e4\u00e4ongelmaa kuitenkin jarruttaa heit\u00e4 edelleen:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Lobopodiat ovat kuolleet sukupuuttoon. T\u00e4m\u00e4 tarkoittaa, ett\u00e4 emme voi saada molekyylitietoja niiden sukupuun rakentamiseksi samalla tavalla kuin el\u00e4vien lajien kohdalla. Keinona on etsi\u00e4 fossiileja ja anatomisia tietoja, jotka voisivat auttaa evoluutioskenaarion rakentamisessa.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Vaikka muitakin lobopodian fossiileja on l\u00f6ydetty, ne ovat hyvin erilaisia ja poikkeavat toisistaan. Monien nykyisten fossiilien joukosta on vaikea m\u00e4\u00e4ritt\u00e4\u00e4 todellisia esi-isien haaroja.<\/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=\"Askel l\u00e4hemm\u00e4s niveljalkaisen esi-is\u00e4\u00e4\" 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>Miksi sitten t\u00e4m\u00e4 kaikki t\u00e4m\u00e4 h\u00f6ss\u00f6tys yhdest\u00e4 uudesta lobopodian fossiilista?<\/strong><\/h4>\n<p><span style=\"font-weight: 400;\">Niveljalkaisten ryhm\u00e4, johon lobopodiat kuuluvat, on yksi parhaiten tunnetuista el\u00e4inryhmist\u00e4, johon kuuluu 80% kaikista tunnetuista lajeista. Lobopodioiden ravintotottumukset paljastavat t\u00e4rke\u00e4n j\u00e4ljen kaikkien niveljalkaisten evoluutiossa.<\/span><\/p>\n<blockquote><p><span style=\"font-weight: 400;\">No <\/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;\"> - mato), olet paljastanut, ett\u00e4 &gt;80% el\u00e4inlajin esi-is\u00e4 oli suodatinsy\u00f6j\u00e4, nouse yl\u00f6s ja anna itsellesi aplodit! - Dave Marshall, BioMed Central (<a href=\"http:\/\/blogs.biomedcentral.com\/bmcseriesblog\/2017\/01\/31\/newly-discovered-500-million-year-old-species-offers-insights-ancestral-arthropod\/\">Lue koko artikkeli t\u00e4\u00e4lt\u00e4<\/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=\"Askel l\u00e4hemm\u00e4s niveljalkaisen esi-is\u00e4\u00e4\" width=\"800\" height=\"246\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">Huolimatta kaikesta uudesta tiedosta esi-isien niveljalkaisista, yksi kysymys on edelleen avoinna: ovatko lobopodit ihmisten mielest\u00e4 yht\u00e4 karmivia kuin niiden el\u00e4v\u00e4t sukulaiset?<\/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=\"Askel l\u00e4hemm\u00e4s niveljalkaisen esi-is\u00e4\u00e4\" 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>\u00c4skett\u00e4in l\u00f6ydetty laji saattaa tuoda meid\u00e4t askeleen l\u00e4hemm\u00e4ksi niveljalkaisten esi-is\u00e4\u00e4. T\u00e4m\u00e4 pieni lobopodian-laji on noin 500 miljoonaa vuotta vanha, ja se n\u00e4ytt\u00e4\u00e4 madolta - lukuun ottamatta sen 20-30 jalkaa. Jalkojen m\u00e4\u00e4r\u00e4n lis\u00e4ksi t\u00e4ll\u00e4 pienell\u00e4 otuksella nimelt\u00e4 Ovatiovermis cribratus on muitakin mielenkiintoisia piirteit\u00e4. El\u00e4v\u00e4 [...]<\/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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