Examinando por Autor "García-Melo, Jorge E."
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- PublicaciónSólo datosA New Pristella (Characiformes: Characidae) from the Río Orinoco Basin, Colombia, with a Redefinition of the Genus(Copeia, 2019-08-28) Conde-Saldaña, Cristhian C.; Albornoz-Garzón, Juan G.; García-Melo, Jorge E.; Villa-Navarro, Francisco A.; Mirande, J. Marcos; Lima, Flávio C. T.A new species of Pristella is described from the Río Meta drainage, Río Orinoco basin, Colombia. Pristella ariporo, new species, is described as the second known species of the genus and differs from P. maxillaris by lacking maxillary teeth, possessing all teeth of premaxilla and dentary conical, by the absence of a dark blotch on the pelvic fin and the absence of a humeral blotch. The evaluation of the relationships of the new taxon within Characidae through an extensive phylogenetic analysis recovered Pristella as a monophyletic clade, sister to Bryconella pallidifrons. A new diagnosis of Pristella is provided. Hyphessobrycon axelrodi, the only species of this genus possessing only conical teeth, may actually be a species of Pristella.
- PublicaciónSólo datosFishes from the Río Alvarado drainage, Upper Río Magdalena Basin, Colombia(Check List, 2020-09-18) Albornoz-Garzón, Juan G.; Conde-Saldaña, Cristhian C.; López-Delgado, Edwin O.; García-Melo, Jorge E.; Villa-Navarro, Francisco A.An annotated list of the freshwater fishes of the Río Alvarado drainage, Upper Río Magdalena Basin is presented. Fishes were captured from nine localities, quarterly sampled between September 2012 and July 2013. A total of 36 species belonging to 14 families, distributed in five orders were collected. The most abundant species was Trichomycterus banneaui (Eigenmann, 1912) (19.4%), followed by Creagrutus affinis Steindachner, 1880 (13%), Chaetostoma thomsoni Regan, 1904 (9.1%), Trichomycterus mogotensis Ardila-Rodríguez, 2017 (7.7%), Astroblepus homodon (Regan, 1904) (6.6%), Creagrutus dulima Albornoz-Garzón, Conde-Saldaña, García-Melo, Taphorn & Villa-Navarro, 2018 (5.9%), Poecilia sphenops Valenciennes, 1846 (5.7%) and Argopleura magdalenensis (Eigenmann, 1913) (5.6%). An identification key and a complete photographic catalog of all fish species recorded in the drainage are presented.
- PublicaciónSólo datosSpecies delimitation reveals an underestimated diversity of Andean catfishes of the family Astroblepidae (Teleostei: Siluriformes)(Neotropical Ichthyology, 2020-12-04) Ochoa, Luz E.; Melo, Bruno F.; García-Melo, Jorge E.; Maldonado-Ocampo, Javier A.; Souza, Camila S.; Albornoz-Garzón, Juan G.; Villa-Navarro, Francisco; Conde-Saldaña, Cristhian C.; Ortega-Lara, Armando; Oliveira, ClaudioCatfishes of the family Astroblepidae form a group composed by 82 valid species of the genus Astroblepus inhabiting high-gradient streams and rivers throughout tropical portions of the Andean Cordillera. Little has been advanced in the systematics and biodiversity of astroblepids other than an unpublished thesis, a single regional multilocus study and isolated species descriptions. Here, we examined 208 specimens of Astroblepus that apparently belong to 16 valid species from several piedmont rivers from northern Colombia to southern Peru. Using three single-locus approaches for species delimitation in combination with a species tree analysis estimated from three mitochondrial genes, we identified a total of 25 well-delimited lineages including eight valid and 17 potential undescribed species distributed in two monophyletic groups: the Central Andes Clade, which contains 14 lineages from piedmont rivers of the Peruvian Amazon, and the Northern Andes Clade with 11 lineages from trans- and cis-Andean rivers of Colombia and Ecuador, including the Orinoco, Amazon, and Magdalena-Cauca basins and Pacific coastal drainages. Results of species delimitation methods highlight several taxonomical incongruences in recently described species denoting potential synonymies.