{"id":8691,"date":"2026-04-10T23:23:09","date_gmt":"2026-04-10T20:23:09","guid":{"rendered":"https:\/\/neoberidhaber.kahveciyazilim.com\/?p=8691"},"modified":"2026-04-10T23:23:10","modified_gmt":"2026-04-10T20:23:10","slug":"sicakkanliligin-kokeni-permiyen-donemi-fosilleri-memeli-tarihini-yeniden-yaziyor","status":"publish","type":"post","link":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/2026\/04\/10\/sicakkanliligin-kokeni-permiyen-donemi-fosilleri-memeli-tarihini-yeniden-yaziyor\/","title":{"rendered":"S\u0131cakkanl\u0131l\u0131\u011f\u0131n K\u00f6keni: Permiyen D\u00f6nemi Fosilleri Memeli Tarihini Yeniden Yaz\u0131yor"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>250 Milyon Y\u0131l \u00d6nceki D\u00f6n\u00fc\u015f\u00fcm: Memeliler Nas\u0131l &#8220;Biz&#8221; Oldu?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Paleontologlar, modern memelilerin do\u011frudan atas\u0131 olan <strong>Cynodont<\/strong> (K\u00f6pek Di\u015fliler) grubuna ait fosiller \u00fczerinde yapt\u0131klar\u0131 mikro-tomografi incelemeleriyle, evrimsel biyolojinin en b\u00fcy\u00fck sorular\u0131ndan birini yan\u0131tlad\u0131.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. Termoreg\u00fclasyonun Do\u011fu\u015fu<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ara\u015ft\u0131rma, bu canl\u0131lar\u0131n kemik dokusundaki b\u00fcy\u00fcme halkalar\u0131n\u0131 inceleyerek, onlar\u0131n bug\u00fcnk\u00fc s\u00fcr\u00fcngenler gibi \u00e7evresel s\u0131cakl\u0131\u011fa ba\u011f\u0131ml\u0131 olmad\u0131\u011f\u0131n\u0131, i\u00e7sel bir v\u00fccut s\u0131cakl\u0131\u011f\u0131 (s\u0131cakkanl\u0131l\u0131k) geli\u015ftirmeye ba\u015flad\u0131klar\u0131n\u0131 ortaya koydu.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>H\u0131zl\u0131 B\u00fcy\u00fcme:<\/strong> Fosillerdeki damar yap\u0131s\u0131n\u0131n yo\u011funlu\u011fu, bu canl\u0131lar\u0131n \u00e7ok h\u0131zl\u0131 bir metabolizmaya sahip oldu\u011funu g\u00f6steriyor.<\/li>\n\n\n\n<li><strong>\u0130klim Adaptasyonu:<\/strong> D\u00fcnyan\u0131n g\u00f6rd\u00fc\u011f\u00fc en b\u00fcy\u00fck kitlesel yok olu\u015ftan sonra de\u011fi\u015fen hava ko\u015fullar\u0131, bu canl\u0131lar\u0131 sabit bir v\u00fccut \u0131s\u0131s\u0131 korumaya zorlam\u0131\u015f olabilir.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. Fosillerdeki &#8220;B\u0131y\u0131k&#8221; \u0130pu\u00e7lar\u0131<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ke\u015ffin en heyecan verici k\u0131s\u0131mlar\u0131ndan biri, kafatas\u0131 yap\u0131s\u0131ndaki sinir kanallar\u0131:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Duyusal Geli\u015fim:<\/strong> Fosillerin burun k\u0131sm\u0131ndaki k\u00fc\u00e7\u00fck delikler (foramen), bu canl\u0131lar\u0131n geli\u015fmi\u015f b\u0131y\u0131klara sahip oldu\u011funu d\u00fc\u015f\u00fcnd\u00fcr\u00fcyor.<\/li>\n\n\n\n<li><strong>T\u00fcylerin \u0130lk Ad\u0131m\u0131:<\/strong> B\u0131y\u0131klar\u0131n varl\u0131\u011f\u0131, v\u00fccudu kaplayan t\u00fcylerin (k\u00fcrk\u00fcn) evrimle\u015fmesinden hemen \u00f6nceki a\u015fama olarak kabul ediliyor. Bu da memeli atalar\u0131n\u0131n 250 milyon y\u0131l \u00f6nce &#8220;t\u00fcyl\u00fc&#8221; olabilece\u011fi anlam\u0131na geliyor.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. Dinozorlar\u0131n G\u00f6lgesinde De\u011fil, Onlardan \u00d6nce!<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Genel kan\u0131 memelilerin dinozorlar\u0131n g\u00f6lgesinde, k\u00fc\u00e7\u00fck ve gececil canl\u0131lar olarak evrimle\u015fti\u011fi y\u00f6n\u00fcndeydi. Ancak bu \u00e7al\u0131\u015fma, memeli \u00f6zelliklerinin (karizmatik di\u015f yap\u0131s\u0131, diyaframl\u0131 solunum ve s\u0131cakkanl\u0131l\u0131k) dinozorlar\u0131n y\u00fckseli\u015finden \u00e7ok \u00f6nce, bask\u0131n bir hayatta kalma stratejisi olarak ba\u015flad\u0131\u011f\u0131n\u0131 kan\u0131tl\u0131yor.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/evrimagaci.org\/gonderi\/memeli-atalarinin-sirri-cozuldu-250-milyon-yillik-32738\">haber kayna\u011f\u0131 i\u00e7in t\u0131kla<\/a><\/div>\n<\/div>\n\n\n<div class=\"wp-block-post-author\"><div class=\"wp-block-post-author__avatar\"><img alt='' src='https:\/\/secure.gravatar.com\/avatar\/7aa2fa816019145edcb28b57f49f72b3e1caebcb19884adf0783399888b2d8e6?s=48&#038;d=mm&#038;r=g' srcset='https:\/\/secure.gravatar.com\/avatar\/7aa2fa816019145edcb28b57f49f72b3e1caebcb19884adf0783399888b2d8e6?s=96&#038;d=mm&#038;r=g 2x' class='avatar avatar-48 photo' height='48' width='48' \/><\/div><div class=\"wp-block-post-author__content\"><p class=\"wp-block-post-author__name\">Mahmut Can Yal\u00e7\u0131n<\/p><\/div><\/div>\n\n\n<p class=\"wp-block-paragraph\">10.04.2026 23:22<\/p>\n","protected":false},"excerpt":{"rendered":"Bilim d\u00fcnyas\u0131 uzun zamand\u0131r memelilerin ay\u0131rt edici \u00f6zellikleri olan s\u0131cakkanl\u0131l\u0131k ve t\u00fcy yap\u0131s\u0131n\u0131n ne zaman ortaya \u00e7\u0131kt\u0131\u011f\u0131n\u0131 tart\u0131\u015f\u0131yordu. G\u00fcney Afrika\u2019da ke\u015ffedilen ve 250 milyon y\u0131l \u00f6ncesine tarihlenen yeni fosiller, bu d\u00f6n\u00fc\u015f\u00fcm\u00fcn san\u0131landan \u00e7ok daha erken ba\u015flad\u0131\u011f\u0131n\u0131 kan\u0131tlad\u0131. Ara\u015ft\u0131rma, memeli atalar\u0131n\u0131n B\u00fcy\u00fck Permiyen Yok Olu\u015fu&#8217;ndan hemen sonra, ekstrem iklim ko\u015fullar\u0131na uyum sa\u011flamak i\u00e7in metabolizmalar\u0131n\u0131 h\u0131zland\u0131rd\u0131\u011f\u0131n\u0131 ve ilk yal\u0131t\u0131m t\u00fcylerini geli\u015ftirdi\u011fini g\u00f6steriyor.","protected":false},"author":6,"featured_media":8693,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_display_header_overlay":false,"csco_singular_sidebar":"","csco_page_header_type":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_location_hash":"","csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0,"footnotes":""},"categories":[212,1],"tags":[],"class_list":["post-8691","post","type-post","status-publish","format-standard","has-post-thumbnail","category-bilim","category-genel","cs-entry","cs-video-wrap"],"_links":{"self":[{"href":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/wp-json\/wp\/v2\/posts\/8691","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/wp-json\/wp\/v2\/comments?post=8691"}],"version-history":[{"count":1,"href":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/wp-json\/wp\/v2\/posts\/8691\/revisions"}],"predecessor-version":[{"id":8694,"href":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/wp-json\/wp\/v2\/posts\/8691\/revisions\/8694"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/wp-json\/wp\/v2\/media\/8693"}],"wp:attachment":[{"href":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/wp-json\/wp\/v2\/media?parent=8691"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/wp-json\/wp\/v2\/categories?post=8691"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/neoberidhaber.kahveciyazilim.com\/index.php\/wp-json\/wp\/v2\/tags?post=8691"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}