Abstract (en):
The South American dipnoans are represented by a single species (Lepidosiren paradoxa) belonging to the Lepidosirenidae family (Nelson, 1994). These fishes are related to the African lungfish family Protopteridae that belong to the same order (Lepidosireniformes), and share with them a number of morphological characteristics and behavior. They tend to be considered authentic living fossils, as they are one evolutionary step between fish and amphibians. The Lepidosirenids have elongated bodies that may measure up to 1, 25 m; their fins are vascularized filaments; they have unpaired vomerine teeth, and lack bones in their cheeks, as well as in the premaxila and maxila (Arratia 2003).
Abstract (es):
Los dipnoos suramericanos están representados por la familia Lepidosirenidae con una única especie, Lepidosiren paradoxa (Nelson 1994). Estos peces son emparentados con la familia Protopteridae, peces pulmonados africanos, que pertenecen al mismo orden (Lepidosireniformes), con los que comparten características morfológicas y hábitos en su comportamiento. Son considerados auténticos fósiles vivientes al ser un escalón evolutivo entre los peces y los anfibios. Los lepidosirenidos presentan cuerpos alargados que pueden alcanzar hasta 1,25 m de longitud; sus aletas son filamentos vacularizados, en la boca presentan dientes vomerianos impares y carecen de huesos en las mejillas al igual que la premaxila y maxila (Arratia 2003).
Keywords:
Pulmonado, <em>Lepidosiren paradoxa</em>, Cuenca del Orinoco (es)
Lungfish, Lepidosiren paradoxa, Orinoco basin (en)
Lungfish, Lepidosiren paradoxa, Orinoco basin (en)
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How to Cite
Bogotá-Gregory, J. D., & Maldonado-Ocampo, J. A. (2006). First register of Lepidosiren paradoxa Fitzinger, 1837 for the Orinoco basin (PNN El Tuparro, Vichada, Colombia). Biota Colombiana, 7(2). Retrieved from https://revistas.humboldt.org.co/index.php/biota/article/view/179
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