Abstract (en):
In order to provide information on the composition and richness of fish in the Colombian Orinoco piedmont (Tauramena - Casanare), collections were made every two months (June 2012 - February 2013), and standardized (arts-length-time), for six streams and three rivers from de Cusiana River piedmont, Orinoco River Basin, Colombia. 88 species where registered, 33 found on streams and 78 on rivers, there all grouped into six orders, 24 families and 56 genera. Two orders: Characiformes (43 sp.) and Siluriformes (34 sp.) and two families: Characidae (27 sp.) and Loricariidae (15 sp.) had the highest species richness. The results obtained increase the number of species to from the Cusiana River drainage by 26 species, for a new total of 141 species; nine of these had been considered endemic to other sub-drainages. There was also a record of a new order and family (Synbranchiformes: Synbranchidae) and a new genus Ceratobranchia. Eight of the reported species of the reported species require further confirmation because they are new records. The importance of fish diversity and human intervention that the Cusiana River drainage is suffering makes this research a tool for the conservation of this aquatic ecosystems and its fish species.
Abstract (es):
Con el objeto de proporcionar información sobre la composición y riqueza de los peces del piedemonte de la Orinoquia colombiana (Tauramena - Casanare), se realizaron colectas bimestralmente (junio 2012- febrero 2013) y estandarizadas (artes-longitud-tiempo), para seis quebradas y tres ríos del piedemonte de la cuenca del río Cusiana, cuenca del Orinoco, Colombia. Se registraron 88 especies, 33 en quebradas y 78 para los ríos, agrupadas en seis órdenes, 24 familias y 56 géneros. La mayor riqueza la presentaron los órdenes Characiformes (43 sp.) y Siluriformes (34 sp.) y las familias Characidae (27 sp.) y Loricariidae (15 sp.). Los resultados obtenidos incrementan el número de especies para la cuenca media del río Cusiana en 26, para un total de 141. Nueve de estas habían sido consideradas como endémicas para otras subcuencas, registrándose un nuevo orden y familia (Synbranchiformes: Synbranchidae) y un género Ceratobranchia. Ocho especies de las reportadas necesitan ser confirmadas pues se trata de nuevos reportes. La importancia de la diversidad íctica y la intervención antrópica que sufre la cuenca del río Cusiana, hacen de esta investigación una herramienta para la conservación de estos ecosistemas acuáticos y sus especies de peces.
Keywords:
Biodiversidad, Casanare, Conservación, Peces, Monitoreo (es)
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How to Cite
Urbano-Bonilla, A., Prada-Pedreros, S., Zapata, Ángela, Barrera-Cataño, J. I., & Moreno-Cárdenas, A. C. (2014). Composition and fish species richness in piedmont streams and rivers of the Cusiana River drainage in the Colombian Orinoco River Basin. Biota Colombiana, 15(Supl. 1). Retrieved from https://revistas.humboldt.org.co/index.php/biota/article/view/342
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