Biodiversidad de crustáceos peracáridos en el delta del Río Orinoco, Venezuela
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| Autor: | |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2007 |
| Descripción: | The composition, abundance, diversity and density of benthonic peracarid crustaceans were studied in the Orinoco river delta, Venezuela. Samples were collected at 18 sites distributed in five areas: one at the high delta, two at the medium sector and two at the low delta. Two field seasons were included: high waters (18-28 November 2002) and low waters (8-19 May 2003). Three samples were dredged at each sampling site, identifying more than 510 specimens belonging to eight families and 11 species: Amphipoda (three families, six species), Isopoda (one family, one species), Tanaidacea (two families, three species), Cumacea (one family) and Mysida (one family, one species). Two species (Discapseudes surinamensis and Halmyrapseudes spaansi) and an unidentified species of Kalliapseudes are new records for Venezuela. Their density and distribution suggest that a salinity gradient influenced longitudinal distribution: greater densities and species richness were in the lower delta, near the mouth of the Mariusa and Winikina rivers. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Lenguaje: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/5809 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/5809 |
| Palabra clave: | Anfípodos isópodos diversidad tanaidáceos densidad río Orinoco Amphipods isopod diversity tanaids density Orinoco River |