{"id":7326,"date":"2026-11-07T19:49:53","date_gmt":"2026-11-08T00:49:53","guid":{"rendered":"https:\/\/canasanta.ca\/?p=7326"},"modified":"2026-11-07T19:49:53","modified_gmt":"2026-11-08T00:49:53","slug":"ave-gigante-isla-flores-megapodius-rokusi","status":"publish","type":"post","link":"https:\/\/canasanta.ca\/en\/ciencia\/ave-gigante-isla-flores-megapodius-rokusi\/","title":{"rendered":"UN AVE GIGANTE HABIT\u00d3 LA ISLA DE LOS HOBBITS"},"content":{"rendered":"

En una cueva de la isla indonesia de Flores, c\u00e9lebre por los restos de un peque\u00f1o pariente humano, apareci\u00f3 la huella de otra criatura extraordinaria. No se trata de un nuevo hom\u00ednido, sino de un ave terrestre de gran tama\u00f1o cuya existencia se ha reconstruido a partir de un fragmento de hueso. Su nombre cient\u00edfico es Megapodius rokusi<\/em> y representa una especie hasta ahora desconocida para la ciencia.<\/p>\n

El estudio que la describe se public\u00f3 el 22 de octubre de 2026<\/strong> en la revista paleontol\u00f3gica Alcheringa<\/em>. La investigaci\u00f3n fue realizada por Hanneke J. M. Meijer<\/strong>, Thomas Sutikna<\/strong>, E. Wahyu Saptomo<\/strong> y Matthew W. Tocheri<\/strong>. Los cient\u00edficos calculan que el animal pesaba alrededor de 3,9 kilogramos<\/strong>, una masa considerable para el g\u00e9nero al que pertenec\u00eda.<\/p>\n

El hallazgo procede de Liang Bua<\/strong>, una cueva que ocupa un lugar singular en la historia de la paleoantropolog\u00eda. All\u00ed se encontraron los famosos restos de Homo floresiensis<\/em>, una especie humana extinta de peque\u00f1a estatura. El nuevo f\u00f3sil muestra que el entorno de aquella cueva albergaba tambi\u00e9n aves muy distintas de las actuales.<\/p>\n

UN HUESO QUE REVEL\u00d3 UNA ESPECIE<\/h2>\n

Lo sorprendente es la escasez del material disponible: los investigadores identificaron la especie mediante una porci\u00f3n de un tarsometatarso<\/strong>, hueso de la parte inferior de la pata de las aves. Sus dimensiones y determinados rasgos anat\u00f3micos permitieron distinguirlo de los megapodios conocidos, vivos y extinguidos.<\/p>\n

El hueso se recuper\u00f3 en sedimentos cuya antig\u00fcedad se sit\u00faa aproximadamente entre 190.000 y 120.000 a\u00f1os<\/strong>. Esa dataci\u00f3n corresponde al dep\u00f3sito geol\u00f3gico en que apareci\u00f3, no a una medici\u00f3n directa de la edad del hueso. Los cient\u00edficos consideran que se trata del mayor representante del g\u00e9nero Megapodius<\/em> descrito hasta ahora.<\/p>\n

Los megapodios son aves de aspecto semejante al de ciertas gallinas, pero poseen una caracter\u00edstica reproductiva excepcional: en vez de incubar sus huevos principalmente con el calor del cuerpo, suelen enterrarlos y aprovechar el calor ambiental, procedente del suelo o de materia vegetal en descomposici\u00f3n. Sus polluelos emergen con un grado de desarrollo notable y pueden valerse por s\u00ed mismos poco despu\u00e9s de nacer.<\/p>\n

UN AVE QUE INCUBABA BAJO TIERRA<\/h2>\n

En Flores todav\u00eda vive Megapodius reinwardt<\/em>, una especie mucho m\u00e1s peque\u00f1a, cuya masa habitual se sit\u00faa aproximadamente entre medio kilogramo y 1,2 kilogramos. La comparaci\u00f3n ayuda a imaginar la magnitud del animal desaparecido, aunque no permite conocer con certeza su plumaje, sus movimientos o su comportamiento.<\/p>\n

\"Pared
Imagen contextual de roca caliza. Fotograf\u00eda: Teuku Faza Rivaldi \/ Unsplash. No corresponde a Liang Bua.<\/figcaption><\/figure>\n

El nombre rokusi<\/em> honra al zooarque\u00f3logo indonesio Rokus Due Awe<\/strong>, cuya labor fue decisiva en las investigaciones de Liang Bua. El reconocimiento tambi\u00e9n recuerda que la reconstrucci\u00f3n del pasado depende de d\u00e9cadas de trabajo local, excavaciones minuciosas y estudio de colecciones que a menudo contienen piezas aparentemente modestas.<\/p>\n

Flores forma parte de Wallacea<\/strong>, la regi\u00f3n biogeogr\u00e1fica que separa grandes conjuntos de fauna asi\u00e1tica y australiana. Hasta este descubrimiento no se hab\u00eda descrito all\u00ed un megapodio f\u00f3sil. La nueva especie sugiere que la diversidad de estas aves fue mayor durante el Pleistoceno de lo que indican las poblaciones actuales.<\/p>\n

UNA PIEZA NUEVA EN LA HISTORIA DE FLORES<\/h2>\n

El descubrimiento plantea interrogantes dif\u00edciles de resolver. Los investigadores no saben si Megapodius rokusi<\/em> pod\u00eda volar: para determinarlo har\u00edan falta, entre otros elementos, huesos de las alas y la cintura escapular. Tampoco conocen la fecha de su extinci\u00f3n ni la causa de su desaparici\u00f3n.<\/p>\n

El entorno de Liang Bua incluy\u00f3 en distintos momentos otros animales singulares, como estegodontes y dragones de Komodo. Los huevos de los megapodios, ricos en yema y enterrados en lugares accesibles, pudieron representar una fuente potencial de alimento para depredadores. Pero no existe evidencia directa<\/strong> de que Homo floresiensis<\/em> consumiera huevos de esta especie reci\u00e9n identificada.<\/p>\n

LO QUE TODAV\u00cdA NO SABEMOS<\/h2>\n

Es importante distinguir esa posibilidad ecol\u00f3gica de un hecho demostrado. Un f\u00f3sil aislado no permite reconstruir una cadena alimentaria completa ni atribuir a la actividad humana la desaparici\u00f3n del ave. Los autores insisten en que se necesitan m\u00e1s restos para comprender su historia evolutiva y su relaci\u00f3n con otras especies.<\/p>\n

El valor del hallazgo reside precisamente en lo que a\u00f1ade a una historia todav\u00eda incompleta. En una isla famosa por sus antiguos humanos diminutos, el registro f\u00f3sil revela ahora un ave extraordinariamente grande para su grupo. Cada fragmento recuperado ampl\u00eda la imagen de un ecosistema desaparecido y recuerda cu\u00e1nto queda por descubrir bajo el suelo de las cuevas de Indonesia.<\/p>","protected":false},"excerpt":{"rendered":"

Un hueso hallado en la cueva indonesia de Liang Bua revela una especie de megapodio de 3,9 kilos que vivi\u00f3 hace m\u00e1s de 120.000 a\u00f1os.<\/p>","protected":false},"author":284226809,"featured_media":7324,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[33205457,33205542,3213,33205505],"tags":[33208726,33208725,33208724],"class_list":["post-7326","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-al-dia","category-animales","category-ciencia","category-paleontologia","tag-aves-prehistoricas","tag-flores","tag-megapodius-rokusi"],"acf":[],"yoast_head":"\nUN 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