Eosen \u00c7a\u011f\u0131’nda, yakla\u015f\u0131k 55,8-33,9 milyon y\u0131l \u00f6nce, D\u00fcnya memeli pop\u00fclasyonlar\u0131nda bir art\u0131\u015fa tan\u0131k oldu. Primatlar yak\u0131n zamanda ortaya \u00e7\u0131km\u0131\u015ft\u0131 ve Kuzey Amerika yakla\u015f\u0131k 30 k\u00f6pek t\u00fcr\u00fcne ev sahipli\u011fi yap\u0131yordu. Ancak yeni bir \u00e7al\u0131\u015fma, bu antik k\u00f6peklerin \u00e7o\u011funun yakla\u015f\u0131k 20 milyon y\u0131l \u00f6nce aniden ortadan kayboldu\u011funu ortaya \u00e7\u0131kard\u0131. Su\u00e7lu? \u0130lk kediler.<\/p>\n\n
Hesaplamal\u0131 biyolog ve ba\u015f yazar Daniele Silvestro’ya g\u00f6re, \u00e7e\u015fitli etobur gruplar\u0131 k\u00f6peklerle rekabet etmi\u015f olsa da, kedigiller (kediler) en ikna edici rekabet kan\u0131t\u0131n\u0131 sergiledi. Antik k\u00f6peklerin neslinin t\u00fckenmesinin \u00f6zel nedenini belirlemek i\u00e7in Silvestro ve ekibi, 20-40 milyon y\u0131l \u00f6nce ya\u015fam\u0131\u015f hayvanlardan 2000’den fazla fosili analiz etti.<\/p>\n\n
Ara\u015ft\u0131rmac\u0131lar, gezegenin de\u011fi\u015fen ikliminde yiyecek i\u00e7in potansiyel rakipleri belirlemek \u00fczere ay\u0131, kurt ve b\u00fcy\u00fck kediler gibi etobur hayvanlar\u0131n v\u00fccut tiplerini kar\u015f\u0131la\u015ft\u0131rd\u0131lar. Antik kediler, \u00f6zellikle de k\u0131l\u0131\u00e7 di\u015fli sahte kedi, ba\u015f \u015f\u00fcpheliler olarak ortaya \u00e7\u0131kt\u0131. Bu kediler k\u00f6peklerle boyut olarak kar\u015f\u0131la\u015ft\u0131r\u0131labilirdi, benzer avlar\u0131 t\u00fcketiyorlard\u0131 ve k\u00f6peklerin fosil kay\u0131tlar\u0131ndan h\u0131zla kayboldu\u011fu d\u00f6nemde geli\u015ftiler.<\/p>\n\n
Geleneksel olarak iklim de\u011fi\u015fikli\u011fi, biyolojik \u00e7e\u015fitlili\u011fin evriminde bask\u0131n bir g\u00fc\u00e7 olarak g\u00f6r\u00fclm\u00fc\u015ft\u00fcr. Ancak Silvestro’nun ara\u015ft\u0131rmas\u0131, etobur t\u00fcrler aras\u0131ndaki rekabetin k\u00f6peklerin gerilemesinde daha da \u00f6nemli bir rol oynad\u0131\u011f\u0131n\u0131 \u00f6ne s\u00fcr\u00fcyor. Gezegenin h\u0131zla de\u011fi\u015fen iklimine ra\u011fmen kediler, k\u00f6pek rakiplerini geride b\u0131rakan \u00fcst\u00fcn avc\u0131lar olduklar\u0131n\u0131 kan\u0131tlad\u0131.<\/p>\n\n
\u0130lk kediler bir\u00e7ok antik k\u00f6pek t\u00fcr\u00fcn\u00fcn yok olmas\u0131na yol a\u00e7m\u0131\u015f olsa da, k\u00f6pekler insanlar ile olan ortakl\u0131klar\u0131 sayesinde bir avantaj elde ettiler. Genetik kan\u0131tlar, k\u00f6peklerin kurtlardan yakla\u015f\u0131k 27.000 y\u0131l \u00f6nce ayr\u0131ld\u0131\u011f\u0131n\u0131, daha \u00f6nce d\u00fc\u015f\u00fcn\u00fcld\u00fc\u011f\u00fcnden \u00e7ok daha erken bir tarihte oldu\u011funu g\u00f6steriyor. \u00d6te yandan, yabani kediler insanlarla yaln\u0131zca yakla\u015f\u0131k 9500 y\u0131l \u00f6nce ili\u015fki kurmaya ba\u015flad\u0131.<\/p>\n\n
Kediler ve k\u00f6pekler aras\u0131ndaki rekabet milyonlarca y\u0131l \u00f6ncesine dayan\u0131yor. Eosen \u00c7a\u011f\u0131’nda, antik kediler \u00e7ok say\u0131da antik k\u00f6pek t\u00fcr\u00fcn\u00fcn yok olmas\u0131nda belirleyici bir rol oynad\u0131. \u0130klim de\u011fi\u015fikli\u011finden ziyade yiyecek ve kaynaklar i\u00e7in rekabet, bu yok olma olay\u0131n\u0131n birincil itici g\u00fcc\u00fc olarak ortaya \u00e7\u0131kt\u0131. Kediler bu erken sava\u015fta \u00fcst\u00fcnl\u00fck sa\u011flam\u0131\u015f olsa da k\u00f6pekler sonunda insanlarla olan benzersiz ili\u015fkileri sayesinde bir avantaj elde ettiler.<\/p>","protected":false},"excerpt":{"rendered":"
Antik Kediler: Antik K\u00f6peklerin Yok Olmas\u0131n\u0131n Su\u00e7lular\u0131 Eosen \u00c7a\u011f\u0131’nda Rekabet ve \u0130klim De\u011fi\u015fikli\u011fi Eosen \u00c7a\u011f\u0131’nda, yakla\u015f\u0131k 55,8-33,9 milyon y\u0131l \u00f6nce, D\u00fcnya memeli pop\u00fclasyonlar\u0131nda bir art\u0131\u015fa tan\u0131k oldu. Primatlar yak\u0131n zamanda…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[398],"tags":[23119,17918,5638,911,141,23120,136,23121,7077,137,3162,342,400],"class_list":["post-17600","post","type-post","status-publish","format-standard","hentry","category-life-science","tag-ancient-cats","tag-ancient-dogs","tag-predation","tag-science-art","tag-natural-history","tag-eocene-era","tag-evolution","tag-felids","tag-mammals","tag-paleontology","tag-competition","tag-life-science","tag-extinction"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/17600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/comments?post=17600"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/17600\/revisions"}],"predecessor-version":[{"id":17601,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/17600\/revisions\/17601"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/media?parent=17600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/categories?post=17600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/tags?post=17600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}