{"ok":true,"nota":{"id":"e2518536466ea539","slug":"ratones-de-montana-tienen-menos-fertilidad-masculina-que-sus-parientes-e25185","titulo":"Ratones de montaña tienen menos fertilidad masculina que sus parientes de tierras bajas","resumen":"Compararon ratones de poblaciones de alta y baja altura con una especie de tierras bajas. Midieron fenotipos reproductivos masculinos y la sensibilidad al estrés por falta de oxígeno.","fuente":"biorxiv","fuenteNombre":"bioRxiv · preprints","color":"#be2628","autor":"Hunnicutt, K. E., Glenn, E. S., Perry, J. C., Tatro, M. Q., Conrad, L. K., Juergens, M. Y., Wilsterman, K., Skinner, B. ","url":"https://www.biorxiv.org/content/10.64898/2026.10.16.759662v1?rss=1","imagen":"/hoy/portada/e2518536466ea539","tema":"ciencia","subtemas":["adaptacion a la altura","fertilidad masculina","hipoxia","evolucion","roedores"],"entidades":["Peromyscus maniculatus","Peromyscus leucopus"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-22T00:00:00.000Z","indexTs":"2026-10-22T21:54:18.823Z","hash":"6d1e1d1ce166101302205dad54000d11762eabc91482e63a93812421c0ddf912","tsa":{"time":"Oct 22 21:55:20 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"Vivir en altura obliga a los cuerpos a convivir con menos oxígeno, y este estudio muestra que la reproducción masculina puede pagar un costo distinto según la población. Es un ejemplo de cómo la evolución resuelve un problema a costa de otro. Para una persona que vive en la Puna o viaja a la altura, es una pista de cómo el cuerpo se adapta, aunque el estudio se hizo en roedores silvestres.","quienFirma":"bioRxiv · preprints","confianza":"preprint","consulta":null},"sello":{"hash":"6d1e1d1ce166101302205dad54000d11762eabc91482e63a93812421c0ddf912","sello":"6af66abd7f7ed96490a168a4d99056cdb7a945078cd40cce2d1a4559cc2ebb1d","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6575836,"aleatorio":"a8739c6f28d7e03ed191a881119536d56c373334288c8dc3d26ef33eb54db44f","tiempo":"2026-10-22T21:55:00.000Z"},"nist":{"cadena":2,"pulso":1995117,"salida":"932C769A8B73E2CC53835512DA1C7CF78DC4B06757B136D8DCC28C89B61C25ED52E0DD74B99E06F83F83805D89C905466FC5BF54DA4D037DEA5F5312DBA4C659","tiempo":"2026-10-22T21:54:00.000Z"},"noAntes":"2026-10-22T21:55:00.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 22 21:55:20 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"Reduced baseline male fertility and increased sensitivity to hypoxic stress in high-elevation deer mice","descripcion":"Extreme environments like high elevation impose chronic challenges to endothermic animals who must sustain metabolic demand despite reduced oxygen availability. Male reproduction is a tightly regulated physiological system, and hypoxia exposure has negative but transient effects on male reproductive output in diverse mammal species not adapted to high-elevation. Little is known about whether high elevation populations adapt to the detrimental effects of hypoxia on male reproductive physiology. Here, we use high- and low-elevation populations of deer mice (Peromyscus maniculatus) and a lowland congener, P. leucopus, to test how male reproductive phenotypes have diverged across populations and","pubDate":"2026-10-22","url":"https://www.biorxiv.org/content/10.64898/2026.10.16.759662v1?rss=1"},"indexado":"2026-10-22T21:54:18.823Z"}}