Carleton \u00dcniversitesi\u2019nden biliminsanlar\u0131nca yap\u0131lan \u00e7al\u0131\u015fmada, yavru bak\u0131m\u0131n\u0131n tarihini ortaya koyan bir fosil ke\u015ffedildi.<\/p>\n
Yavru bak\u0131m\u0131na ili\u015fkin en eski fosil kal\u0131nt\u0131s\u0131 \u00f6rne\u011fini bulan biliminsanlar\u0131n\u0131n raporlar\u0131 Nature Ecology&Evolution dergisinde yay\u0131mland\u0131. Fosil \u00fczerinde yap\u0131lan incelemeler, yavru bak\u0131m\u0131n\u0131n 40 milyon y\u0131l \u00f6nceye dayand\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcnd\u00fcrmekte.<\/p>\n
\u00c7al\u0131\u015fman\u0131n y\u00fcr\u00fct\u00fcc\u00fclerinden Hillary Maddin, \u201cKaz\u0131 \u00e7al\u0131\u015fmalar\u0131nda bulundu\u011fumuz canl\u0131, do\u011fum sonras\u0131nda bir ma\u011fara i\u00e7erisinde yavruyu gizliyor ve onu koruyor. Bu, omurgal\u0131larda uzun s\u00fcreli gebelik s\u00fcreci sonras\u0131nda yavru bak\u0131m\u0131 oldu\u011funun en eski kan\u0131t\u0131d\u0131r. Yavru bak\u0131m\u0131 davran\u0131\u015f\u0131 bug\u00fcn memelilerde yayg\u0131n bir bi\u00e7imde g\u00f6r\u00fcl\u00fcyor. Bu davran\u0131\u015f\u0131n bu kadar erken bir s\u00fcre\u00e7te ortaya \u00e7\u0131kmas\u0131 olduk\u00e7a ilgin\u00e7\u201d a\u00e7\u0131klamalar\u0131nda bulundu.<\/p>\n
Maddin ve ekibi, yak\u0131n zamanda Nova Scotia Burnu civar\u0131ndaki bir b\u00f6lgede bir a\u011fa\u00e7 k\u00fct\u00fc\u011f\u00fcn\u00fcn i\u00e7erisinde Varanopid synapsid<\/em> isimli kertenkele benzeri omurgal\u0131 canl\u0131ya ait fosil kal\u0131nt\u0131s\u0131n\u0131 ke\u015ffetti. Bu canl\u0131n\u0131n iskeleti b\u00fcy\u00fck oranda korunmu\u015ftu. Fosil kal\u0131nt\u0131lar\u0131 \u00fczerinde \u00e7al\u0131\u015fmalarda bulunan biliminsanlar\u0131, bu kal\u0131nt\u0131lar\u0131n baz\u0131lar\u0131n\u0131n ayn\u0131 yerde bulunan bir yavruya ait oldu\u011funu raporlad\u0131.<\/p>\n Varanopid synapsid<\/em>, g\u00f6r\u00fcn\u00fcm olarak kertenkeleye benzeyen ancak evrimsel olarak kertenkelelere yak\u0131n olmayan bir t\u00fcrd\u00fcr. Bu canl\u0131 t\u00fcr\u00fcn\u00fcn, evrimsel s\u00fcre\u00e7 i\u00e7erisinde biri s\u00fcr\u00fcngenlere ve ku\u015flara do\u011fru giden, di\u011feri ise memelilerin olu\u015fumuna yol a\u00e7an dallanma s\u00fcrecinde memelilere yak\u0131n bir t\u00fcr olarak ortaya \u00e7\u0131kt\u0131\u011f\u0131 d\u00fc\u015f\u00fcn\u00fclmekte.<\/p>\n Yavru bak\u0131m\u0131 ise, ebeveynlerin yavrular\u0131n\u0131n hayatta kalma ihtimalini artt\u0131rmak ve soylar\u0131n\u0131n devaml\u0131l\u0131\u011f\u0131n\u0131 sa\u011flamak i\u00e7in zamanla edindikleri bir davran\u0131\u015ft\u0131r. Yavru bak\u0131m\u0131n\u0131n pek \u00e7ok bi\u00e7imi olsa da, \u00f6zellikle de memelilerde ve benzeri canl\u0131larda, uzun s\u00fcreli gebelik s\u00fcrecinin ard\u0131ndan yavrunun hayatta kalma ihtimalini artt\u0131rmak ad\u0131na ba\u015fvurulan yavru bak\u0131m davran\u0131\u015f\u0131 yayg\u0131n olarak g\u00f6r\u00fcl\u00fcr. Bununla birlikte, yavru bak\u0131m davran\u0131\u015f\u0131n\u0131n evrimsel tarihi a\u00e7\u0131s\u0131ndan \u00e7ok fazla bilgiye sahip de\u011filiz.<\/p>\n Biliminsanlar\u0131 fosil \u00e7al\u0131\u015fmalar\u0131yla birlikte yavru bak\u0131m\u0131n\u0131n tarihini ayd\u0131nlatmaya \u00e7al\u0131\u015f\u0131yor.<\/p>\n Kaynak:<\/strong> https:\/\/phys.org\/news\/2019-12-earliest-fossil-evidence-parental-behavior.html<\/p>\n","protected":false},"excerpt":{"rendered":" Carleton \u00dcniversitesi\u2019nden biliminsanlar\u0131nca yap\u0131lan \u00e7al\u0131\u015fmada, yavru bak\u0131m\u0131n\u0131n tarihini ortaya koyan bir fosil ke\u015ffedildi. Yavru bak\u0131m\u0131na ili\u015fkin en eski fosil kal\u0131nt\u0131s\u0131 \u00f6rne\u011fini bulan biliminsanlar\u0131n\u0131n raporlar\u0131 Nature Ecology&Evolution dergisinde yay\u0131mland\u0131. Fosil \u00fczerinde yap\u0131lan incelemeler, yavru bak\u0131m\u0131n\u0131n 40 milyon y\u0131l \u00f6nceye dayand\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcnd\u00fcrmekte. \u00c7al\u0131\u015fman\u0131n y\u00fcr\u00fct\u00fcc\u00fclerinden Hillary Maddin, \u201cKaz\u0131 \u00e7al\u0131\u015fmalar\u0131nda bulundu\u011fumuz canl\u0131, do\u011fum sonras\u0131nda bir ma\u011fara i\u00e7erisinde yavruyu gizliyor […]<\/p>\n","protected":false},"author":1390,"featured_media":39238,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[200,816,5687,5686],"class_list":["post-39237","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","tag-evrim","tag-fosil","tag-omurgali","tag-yavru-bakimi"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/39237","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/users\/1390"}],"replies":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/comments?post=39237"}],"version-history":[{"count":0,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/39237\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media\/39238"}],"wp:attachment":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media?parent=39237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/categories?post=39237"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/tags?post=39237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}