Abstract
The Queguay river is one of the main tributaries of the lower Uruguay river basin. At the confluencce of its main effluents large wetlands and riparian forest are developed, that according to their biodiversity and ecosystem functions have been included in the National Protected Areas System, under the name “Montes del Queguay”. At a national scale the basin is included in two ecoregions: the Basaltic Slope and the Western Sedimentary Basin. Except for an unsupported listing in scientific collections, there is no documented information about its ichthyofauna. Therefore, the objective of this work was to prepare an updated list of the fish species in the Queguay River basin. Considering all the sources of information, a total of 94 species were registered for the basin, corresponding to 60 genera, 28 families and nine orders. The composition of species found was similar to the largest tributary of the low Uruguay ecoregion, the Rio Negro basin. The main migratory species of the Plata basin stand out, as well as a species of annual fish endemic to the wetlands of the basin, and the presence of an invasive exotic species (Cyprinus carpio).
Highlights
El Río Uruguay es uno de los principales afluentes de la cuenca del Plata, la quinta en extensión en el planeta
Esta cuenca drena una de las pocas regiones en Uruguay sobre la que no existen centros industriales, grandes ciudades, o represas en el entorno directo de sus márgenes (Litovsky & Urruty, 2013)
Especies exóticas invasoras de Uruguay: distribución, impactos socioambientales y estrategias de gestión, pp
Summary
The Queguay river is one of the main tributaries of the lower Uruguay river basin. Large wetlands and riparian forest develop at the confluence of its main affluents and according to their biodiversity and ecosystem functions, they have been included in the National Protected Areas System, under the name “Montes del Queguay”. The objective of this work was to prepare an updated list of the fish species in the Queguay River basin. The main migratory species of the La Plata basin stand out, as well as a species of annual fish endemic to the wetlands of the basin, and the presence of an invasive exotic species. El Río Uruguay es uno de los principales afluentes de la cuenca del Plata, la quinta en extensión en el planeta. El tramo alto ocurre desde sus nacientes (incluyendo sus principales afluentes, los ríos Pelotas y Canoas), hasta el Salto de Yucumã; el tramo medio, desde este salto hasta el Salto Grande; y el tramo inferior, desde el
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