Zay\u0131f g\u00f6r\u00fc\u015fe sahip hayvanlar, karanl\u0131k ortamlarda g\u00f6rebilmek i\u00e7in benzersiz uyarlamalar geli\u015ftirmi\u015flerdir. Bu uyarlamalardan biri, deri s\u0131rtl\u0131 deniz kaplumba\u011fas\u0131n\u0131n tavan penceresidir; kafatas\u0131n\u0131n \u00fcst k\u0131sm\u0131nda al\u0131\u015f\u0131lmad\u0131k derecede ince bir kemik alan\u0131d\u0131r. Bu tavan penceresi, \u0131\u015f\u0131\u011f\u0131n kaplumba\u011fan\u0131n epifiz bezine ula\u015fmas\u0131n\u0131 sa\u011flar; bu bez, uykuyu ve di\u011fer d\u00f6ng\u00fcsel aktiviteleri d\u00fczenleyen bir yap\u0131d\u0131r.<\/p>\n\n
\u00c7o\u011fu omurgal\u0131da epifiz bezi, uykuyu ve di\u011fer d\u00f6ng\u00fcsel aktiviteleri d\u00fczenlemek i\u00e7in ortam \u0131\u015f\u0131\u011f\u0131n\u0131 kullan\u0131r. Bununla birlikte, s\u00fcr\u00fcngenler ve amfibiler gibi baz\u0131 t\u00fcrlerde epifiz bezi, mercek ve retina ile tamamlanm\u0131\u015f \u00fc\u00e7\u00fcnc\u00fc bir g\u00f6ze d\u00f6n\u00fc\u015fm\u00fc\u015ft\u00fcr. Bu \u00fc\u00e7\u00fcnc\u00fc g\u00f6z, g\u00fcn \u0131\u015f\u0131\u011f\u0131n\u0131 \u00f6l\u00e7mek ve g\u00fcn\u00fcn saatini belirlemek i\u00e7in kullan\u0131l\u0131r.<\/p>\n\n
Deri s\u0131rtl\u0131 deniz kaplumba\u011fas\u0131, \u00fc\u00e7\u00fcnc\u00fc g\u00f6z yerine bir tavan penceresine sahip oldu\u011fu bilinen tek hayvand\u0131r. Tavan penceresi, kaplumba\u011fan\u0131n kafatas\u0131n\u0131n \u00fcst\u00fcnde, pigmentsiz bir cilt lekesinin hemen alt\u0131nda yer al\u0131r. Bu, \u0131\u015f\u0131\u011f\u0131n do\u011frudan epifiz bezine girmesini sa\u011flar.<\/p>\n\n
Deri s\u0131rtl\u0131 deniz kaplumba\u011fas\u0131, tavan penceresini uzun dalga boylu \u0131\u015f\u0131klardaki de\u011fi\u015fiklikleri alg\u0131lamak i\u00e7in kullan\u0131r. Bu bilgiler, kaplumba\u011fan\u0131n “ekil\u00fcx”\u00fc hesaplamas\u0131n\u0131 sa\u011flar; yani g\u00fcn bat\u0131m\u0131 ve g\u00fcn do\u011fumunun tam 12 saat arayla ger\u00e7ekle\u015fti\u011fi g\u00fcnd\u00fcr. Bu, g\u00f6\u00e7 i\u00e7in su s\u0131cakl\u0131\u011f\u0131ndan veya \u0131\u015f\u0131k yo\u011funlu\u011fundan daha g\u00fcvenilir bir i\u015farettir. Kuzey Atlantik’te beslenen deri s\u0131rtl\u0131 deniz kaplumba\u011falar\u0131, ekil\u00fcx\u00fc kullanarak her sonbaharda g\u00fcneye do\u011fru ne zaman hareket edeceklerini bilirler.<\/p>\n\n
Evrim, bir\u00e7ok hayvan\u0131 v\u00fccutlar\u0131n\u0131n \u00e7e\u015fitli b\u00f6lgelerinde \u0131\u015f\u0131\u011fa tepki vermek i\u00e7in fotoresept\u00f6rlerle donatm\u0131\u015ft\u0131r. \u00d6rne\u011fin, baz\u0131 deniz y\u0131lanlar\u0131n\u0131n kuyruklar\u0131nda, saklan\u0131rken ma\u011faralara tamamen girdiklerinden emin olmak i\u00e7in fotoresept\u00f6rler vard\u0131r. Baz\u0131 kelebeklerin, a\u00e7\u0131k havaya bo\u015falmamak i\u00e7in erkek \u00fcreme organlar\u0131nda \u0131\u015f\u0131\u011fa duyarl\u0131 h\u00fccreler bulunur. Baz\u0131 mercanlar, ilkbahar\u0131n ikinci dolunay\u0131nda mavi \u0131\u015f\u0131k miktar\u0131na ba\u011fl\u0131 olarak \u00fcreme d\u00f6ng\u00fclerine girerler.<\/p>\n\n
Deri s\u0131rtl\u0131 deniz kaplumba\u011fas\u0131n\u0131n tavan penceresi, ortam \u0131\u015f\u0131\u011f\u0131n\u0131 alg\u0131lamas\u0131na ve g\u00fcn\u00fcn saatini belirlemesine olanak tan\u0131yan dikkate de\u011fer bir uyarlamad\u0131r. Bu bilgiler, kaplumba\u011fan\u0131n hayatta kalmas\u0131 i\u00e7in \u00e7ok \u00f6nemlidir; \u00e7\u00fcnk\u00fc bunlar\u0131 uyku ve g\u00f6\u00e7 modellerini d\u00fczenlemek i\u00e7in kullan\u0131r. Tavan penceresinin ke\u015ffi, hayvanlar\u0131n \u00e7evrelerini alg\u0131lamak ve onlara tepki vermek i\u00e7in evrimle\u015ftikleri \u00e7e\u015fitli ve yarat\u0131c\u0131 yollar\u0131 vurgulamaktad\u0131r.<\/p>","protected":false},"excerpt":{"rendered":"
Deri S\u0131rtl\u0131 Deniz Kaplumba\u011fas\u0131n\u0131n Tavan Penceresi: Ortam I\u015f\u0131\u011f\u0131n\u0131 Alg\u0131lamak \u0130\u00e7in Benzersiz Bir Uyarlama Giri\u015f Zay\u0131f g\u00f6r\u00fc\u015fe sahip hayvanlar, karanl\u0131k ortamlarda g\u00f6rebilmek i\u00e7in benzersiz uyarlamalar geli\u015ftirmi\u015flerdir. Bu uyarlamalardan biri, deri s\u0131rtl\u0131…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[280],"tags":[361,17882,141,136,8489,2706,17883,293],"class_list":["post-13268","post","type-post","status-publish","format-standard","hentry","category-zoology","tag-marine-biology","tag-leatherback-turtles","tag-natural-history","tag-evolution","tag-vision","tag-animal-adaptations","tag-pineal-gland","tag-circadian-rhythm"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/13268","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=13268"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/13268\/revisions"}],"predecessor-version":[{"id":13269,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/13268\/revisions\/13269"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/media?parent=13268"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/categories?post=13268"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/tags?post=13268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}