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Gollum, El Pez Subterráneo Que Sobrevivió a La División De Un

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Gollum, El Pez Subterráneo Que Sobrevivió a La División De Un INFO GRA CIENCIA FÍA 19 razon.com.mx VIERNES 06.11.2020 • La Razón DESCUBREN NUEVA ESPECIE PREDECESOR A DE LOS DINOSAURIOS. Científicos de la Univer- sidad de la Cámara Argentina de Comercio y Servicios, en Bolivia, informaron en la revista Historical Biology CIENCIA las huellas de un animal que precedió a los dinosaurios.Aún se busca develar de qué animal se trata. ESPECIE DEPREDADORA DE AGUA DULCE HÁBITAT Y DISTRIBUCIÓN Fue descubierto en un campo agricultor al norte de Kochi, India, donde esta nueva especie de pez se encontraba en un arrozal alimentándose. Gollum, el pez subterráneo Avistamientos Estos extraños peces de cuerpo largo habitan en que sobrevivió acuíferos de roca porosa. a la división de un continente India Gráficos C. Alejandro Sánchez, Ismael F. Mira, Roberto Alvarado y Luisa Ortega Kochi ICTIÓLOGOS del Museo de Zoología de Dresde, Alemania, descubrieron una familia de peces con forma de anguila, llamados cabezas de serpiente dragón, que viven en aguas subterráneas en el sur de la India, según Sri los análisis es un linaje separado de cabezas de serpiente, que se estima se separó de su grupo hermano hace Lanka al menos 34 o 109 millones de años, lo que puede indicar que Aenigmachanna es un linaje de Gondwana, Ghats occidentales Lagos y arroyos que ha sobrevivido a la ruptura del supercontinente, donde India se separó de África hace alrededor de 120 Se encuentran al sur de la Hay más de India, es un punto caliente 50 especies millones de años. Estos animales primitivos habitan en acuíferos de roca porosa y rara vez se ven ya que sólo de biodiversidad. En de cabezas total, los científicos han de serpiente salen a la superficie después de las inundaciones causadas por las fuertes lluvias. descubierto 10 especies Channidae, que de peces subterráneos viven en arroyos en los acuíferos que y lagos en Asia y proporcionan agua a África. AENIGMACHANNA millones de personas. Tiene el cuerpo alargado, aletas dorsales y anal largas, no Los Hábitat Aenigma- posee espinas en esas regiones y las narinas anteriores son channidae poseen notablemente extendidas como tubos nasales. Se encontró la nueva especie en arrozales los cuales una gran variedad de contienen agua estancada que ayuda a rociar y alimentar rasgos primitivos y muy las plantas y el cual contiene una alta biodiversidad como atinadamente, se los serpientes, peces e insectos. describe como fósi- les vivientes Linaje RELACIONES FILOGENÉTICAS El rango de edad mínima El estudio del árbol genealógico de la especie está basado estimada de la especie es de 83-136 millones de años. en 46 caracteres morfológicos. Pristolepis fasciata Nandus nandus 2 Badis corycaeus Especies Belontia hasselti Aenigmachanna son las existentes Sandelia bainsii Cavidad suprabranquial Carece de este órgano y también Ctenopoma multispine del suprabranquial en conjunto. Órganos Aenigmachanna gollum La familia carece de una estructura llamada órgano suprabranquial, que Parachanna africana permite respirar aire. 109 Parachanna oscura Millones de años lleva la especie en la Tierra Channa micropeltes Channa bankanensis Channa marulius Channa punctata Vejiga natatoria Channa gachua A diferencia de las especies similares taxonómicamente, ésta tiene la vejiga acortada. Channa bleheri Ojos y pigmentación Son de color marrón rojizo, poco comunes en peces subterráneos, ya que suelen COMPARATIVO ser blancos y sin ojos. Entre la especie recientemente descubierta y Channid Parachanna con la que comparte algunos rasgos morfológicos. Aenigmachannid Aenigmachanna CRÁNEO Y ESQUELETO vértebra caudal El vector muestra el proceso postorbitario y la punta posterior del maxilar muy alargado de esta nueva especie. Respiradero Vértebra caudal Las vértebras 8.1 cm Esqueleto del holotipo de 90.2 mm, el cual muestra el respiradero y donde empieza Respiradero Channid Parachanna la vértebra caudal. Dr. Ralf Britz vértebra caudal Se centra en la anatomía comparada, la Maxilar filogenética y la taxonomía de los peces acti- La presencia de un gran parche nopterigios y sarcopterigios, que van desde dentario parafenoides y un cuestiones generales de biología evolutiva tabique interorbitario completo y homología y estudios de relaciones de formado por contacto de nivel superior hasta problemas básicos en Respiradero frontal y parafenoides taxonomía y sistemática de varios grupos de 9 cm peces y es el lider del estudio. 19LR3556.indd 3 05/11/20 20:39.
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