{"ok":true,"nota":{"id":"a064ce8b068f3aeb","slug":"frozen-sperm-enables-embryo-development-in-endangered-japanese-bird-fo-a064ce","titulo":"Logran por primera vez que un embrión de ave en peligro se desarrolle con esperma congelado","resumen":"Investigadores usaron esperma congelado de un ave endémica de Okinawa, en peligro de extinción, para fecundar huevos y lograr que los embriones se desarrollaran. Los pollitos, sin embargo, no llegaron a salir del cascarón.","fuente":"phys","fuenteNombre":"Phys.org","color":"#2b5c8a","autor":"","url":"https://phys.org/news/2026-11-frozen-sperm-enables-embryo-endangered.html","imagen":"https://scx1.b-cdn.net/csz/news/tmb/2026/frozen-sperm-enables-e.jpg","tema":"ciencia","subtemas":["conservacion de especies","criopreservacion","aves en peligro","reproduccion asistida","biodiversidad"],"entidades":["Okinawa","Yanbaru","Japón"],"formato":"dato","entretenimiento":false,"pubTs":"2026-11-11T18:40:06.000Z","indexTs":"2026-11-12T15:42:14.121Z","hash":"9005dc1301dafde1d014ec261116403cbc36554fd05883b2d693a611a329e3e5","tsa":{"time":"Nov 11 18:44:36 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"Para una especie que llegó a quedar con apenas 820 ejemplares, guardar esperma en frío abre una herramienta de respaldo si la población vuelve a caer. El resultado tiene un límite serio: el avance llegó hasta el embrión, pero no hasta un ave viva. Todavía falta resolver ese último paso para que la técnica sirva de algo concreto.","quienFirma":"Universidad de Okinawa","confianza":"revisado","consulta":null},"sello":{"hash":"9005dc1301dafde1d014ec261116403cbc36554fd05883b2d693a611a329e3e5","sello":"5e5d3ca58a174015bfff2f641522a8e5b62562f943f444a74620b78733fa976f","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6633055,"aleatorio":"09b71c7439012fe96fcf697bcc81b82f69d7e5bb30e69b3cbca8ba9d3e15cd4b","tiempo":"2026-11-11T18:44:30.000Z"},"nist":{"cadena":2,"pulso":2023461,"salida":"45AFCA722B959BBD86F28EAF6C8CBAE6A176EEBDC1ECB605941FA9D7807AA8878F35143F1467F929585297B15711E94DF33E2ACD404F581E1DDFEF80DC51CD9C","tiempo":"2026-11-11T18:43:00.000Z"},"noAntes":"2026-11-11T18:44:30.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Nov 11 18:44:36 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"Frozen sperm enables embryo development in endangered Japanese bird for first time—but chick fails to hatch","descripcion":"The Okinawa rail (Hypotaenidia okinawae) is an endangered flightless bird endemic to the Yanbaru forest region of Okinawa Island in Japan. The bird has only recently begun recovering its numbers after introduced predators, such as the mongoose, and traffic accidents reduced its population to as low as 820 individuals.","pubDate":"Wed, 11 Nov 2026 13:40:06 EST","url":"https://phys.org/news/2026-11-frozen-sperm-enables-embryo-endangered.html"},"indexado":"2026-11-12T15:42:14.121Z"}}