{"id":16184,"date":"2023-03-20T21:57:12","date_gmt":"2023-03-21T01:57:12","guid":{"rendered":"https:\/\/conexion23.com\/?p=16184"},"modified":"2023-03-20T21:57:16","modified_gmt":"2023-03-21T01:57:16","slug":"la-salvacion-del-rinoceronte-blanco-del-norte-esta-cada-vez-mas-cerca","status":"publish","type":"post","link":"https:\/\/conexion23.com\/?p=16184","title":{"rendered":"La salvaci\u00f3n del rinoceronte blanco del norte est\u00e1 cada vez m\u00e1s cerca."},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">El futuro del rinoceronte blanco del norte, uno de los mam\u00edferos m\u00e1s amenazados del planeta y del que quedan dos hembras en el mundo, depende actualmente de los 24 embriones congelados de la especie que existen en todo el mundo, una limitaci\u00f3n que quedar\u00eda superada si se logran producir \u00f3vulos y espermatozoides a partir de c\u00e9lulas germinales.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00abHace dos a\u00f1os era impensable tener c\u00e9lulas primordiales embrionarias, y las tenemos. Es cuesti\u00f3n de tiempo y dinero\u00bb, explica a EFE Jan Stejskal, portavoz del zoo de Dvur Kralove, un centro pionero en el programa de salvaci\u00f3n de este animal, y el \u00fanico donde se ha logrado reproducir a esta subespecie en cautividad.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El siguiente paso ser\u00e1 poder obtener en laboratorio c\u00e9lulas sexuales, para no depender de Fatu, una hembra nacida en el a\u00f1o 2000 en la Rep\u00fablica Checa y que actualmente vive en una reserva en Kenia, y que es la \u00fanica que puede ovular.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Las c\u00e9lulas germinales primordiales (CGP), que se han obtenido a partir de c\u00e9lulas madre pluripotentes, son el primer paso para lograr gametos masculinos y femeninos, para no tener que depender de los \u00f3vulos de Fatu o del esperma congelado.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esta t\u00e9cnica va tomando visos de realidad despu\u00e9s de que un equipo japon\u00e9s consiguiera esas CGP a partir de material celular de una hembra, Sabir\u00e9, muerta en 2015 en Dvur Kralove.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00abEn Berl\u00edn y San Diego hay muestras de doce animales y con esto trabajamos esa segunda v\u00eda de protecci\u00f3n de los rinocerontes blancos del norte\u00bb, asevera Stejskal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Otras de las ventajas de esta v\u00eda ser\u00eda producir \u00f3vulos a partir del material gen\u00e9tico de hembras vivas, Fatu y Sami, actualmente en el parque nacional keniano de OI Pejeta bajo estrecha vigilancia.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>El futuro del rinoceronte blanco del norte, uno de los mam\u00edferos m\u00e1s amenazados del planeta y del que quedan dos hembras en el mundo, depende actualmente de los 24 embriones congelados de la especie que existen en todo el mundo, una limitaci\u00f3n que quedar\u00eda superada si se logran producir \u00f3vulos y espermatozoides a partir de [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-16184","post","type-post","status-publish","format-standard","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - 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