Prof. Dr. Levent Bat, son d\u00f6nemde Karadeniz’de yo\u011fun denizanas\u0131 varl\u0131\u011f\u0131yla ilgili, “Su s\u0131cakl\u0131\u011f\u0131n\u0131n artmas\u0131 nedeniyle rhizostoma pulmo t\u00fcr\u00fc, s\u0131kl\u0131kla y\u0131\u011f\u0131nlar meydana getirmektedir.” dedi.<\/p>\n
Bat, AA muhabirine, \u00e7evresel fakt\u00f6rlerin, jelimsi organizmalar\u0131n pop\u00fclasyon b\u00fcy\u00fckl\u00fc\u011f\u00fcn\u00fc ve zamanlamas\u0131n\u0131 do\u011frudan etkileyebildi\u011fini s\u00f6yledi.<\/p>\n
![\"\"](\"https:\/\/www.aa.com.tr\/uploads\/userFiles\/9c85db40-ef31-40fe-a989-05c7e506d5d0\/11_2023%2F14112023%2Flevent_.jpg\"\/)
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Karadeniz’in en b\u00fcy\u00fck jelimsi t\u00fcr\u00fc olan “deniz ci\u011feri” de denilen denizanas\u0131 t\u00fcr\u00fc rhizostoma pulmonun son d\u00f6nemde a\u015f\u0131r\u0131 \u00e7o\u011fald\u0131\u011f\u0131n\u0131n belirlendi\u011fine i\u015faret eden Bat, “Denizanalar\u0131 s\u0131cakl\u0131k, tuzluluk ile su i\u00e7inde ya\u015fayan ve ak\u0131nt\u0131ya ba\u011fl\u0131 hareket eden canl\u0131lar olarak bilinir. Su s\u0131cakl\u0131\u011f\u0131n\u0131n artmas\u0131 nedeniyle rhizostoma pulmo t\u00fcr\u00fc, s\u0131kl\u0131kla y\u0131\u011f\u0131nlar meydana getirmektedir. Bazen bu y\u0131\u011f\u0131lmalar b\u00fcy\u00fck boyuta ve yo\u011funlu\u011fa d\u00f6n\u00fc\u015fmektedir. Denizanas\u0131n\u0131n \u00e7o\u011falmas\u0131n\u0131 sa\u011flayan etkenlerden biri de et\u00e7il olmas\u0131 ve planktonlarla beslenmesidir.” diye konu\u015ftu.<\/p>\n
Rhizostoma pulmo denizanas\u0131 t\u00fcr\u00fcn\u00fcn Karadeniz’de y\u00fcksek biyok\u00fctleye sahip oldu\u011funu anlatan Bat, bulundu\u011fu denizlere ba\u011fl\u0131 olarak su s\u0131cakl\u0131\u011f\u0131n\u0131n y\u00fckselmesiyle bollu\u011fu ve da\u011f\u0131l\u0131m\u0131n\u0131n artt\u0131\u011f\u0131n\u0131 s\u00f6yledi.<\/p>\n
Denizanas\u0131n\u0131n yaz sonu ve sonbahar aylar\u0131nda yo\u011fun g\u00f6zlendi\u011fini belirten Bat, \u015funlar\u0131 kaydetti:<\/p>\n
“Sonbahar ve k\u0131\u015f aylar\u0131ndaki f\u0131rt\u0131nalarla k\u0131y\u0131lara at\u0131l\u0131r. Rhizostoma pulmo, muhtemelen k\u0131\u015f aylar\u0131nda a\u00e7\u0131k deniz derinliklerine \u00e7ekildi\u011finden takip eden y\u0131l\u0131n haziran sonuna kadar g\u00f6r\u00fclmeyebilir. \u00d6rne\u011fin Samsun k\u0131y\u0131lar\u0131nda yapt\u0131\u011f\u0131m\u0131z \u00e7al\u0131\u015fmada, su s\u0131cakl\u0131\u011f\u0131n\u0131n y\u00fcksek oldu\u011fu yaz aylar\u0131nda artmaya ba\u015flayan pop\u00fclasyonu sonbahar aylar\u0131nda da y\u00fcksek oranda g\u00f6zlenmi\u015f, k\u0131\u015f aylar\u0131n\u0131n ikinci yar\u0131s\u0131ndan itibaren seyrekle\u015fmeye ba\u015flam\u0131\u015f ve bahar aylar\u0131nda g\u00f6zden kaybolmu\u015ftur. Bu veriler, su s\u0131cakl\u0131\u011f\u0131n\u0131n rhizostoma pulmo t\u00fcr\u00fcn\u00fcn da\u011f\u0131l\u0131m\u0131n\u0131 etkiledi\u011fi varsay\u0131m\u0131n\u0131 da desteklemektedir.”<\/p>\n
T\u00fcr\u00fcn d\u00fcnya \u00fczerindeki da\u011f\u0131l\u0131m\u0131n\u0131n kuzey ve g\u00fcney Atlantik Okyanusu, Karadeniz, Akdeniz ve K\u0131z\u0131ldeniz \u015feklinde oldu\u011funu belirten Bat, s\u00f6zlerini, “Rhizostoma pulmo, Akdeniz ve Karadeniz’in b\u00fct\u00fcn k\u0131y\u0131lar\u0131nda g\u00f6r\u00fclmekte, haziran-a\u011fustos aylar\u0131nda yo\u011fun olarak bulunmaktad\u0131r.” diye tamamlad\u0131.<\/p>\n