A new species of the genus Achondrostoma Robalo, Almada, Levy & Doadrio, 2007 (Actynopterigii, Cyprinidae) from western Spain
A new species of the genus Achondrostoma Robalo, Almada, Levy & Doadrio, 2007 (Actynopterigii, Cyprinidae) from western Spain
[ES] Se describe una nueva especie de pez de agua dulce, Achondrostoma salmantinum, anteriormente considerada como una población de Iberochondrostoma lemmingii, a partir de caracteres genéticos y morfológicos. La nueva especie vive en la cuenca del río Duero en los ríos Uces, Huebra y Águeda y sus afluentes en la provincia de Salamanca en el oeste de España. De acuerdo con los caracteres morfométricos y genéticos la especie se distingue de Iberochondrostoma lemmingii y de otras especies del género Achondrostoma por un pedúnculo caudal estrecho, larga longitud de la cabeza y de la distancia postorbital, pequeño número de escamas (9/10/44-53/4-6), pequeño número de branquispinas (15-22), frecuentemente 5-5 dientes faríngeos, cuatro loci isozimáticos diagnósticos (IDHP-2*, IDHP-3*, MDH-B* and PEP*) y un único alelo (MDH-A*95). La distribución de I. lemmingii se restringe ahora a las cuencas de los ríos Tajo, Guadiana, Odiel y Guadalquivir. Este nuevo ciprínido es considerado En Peligro (EN) de acuerdo a las categorías de la Lista Roja de la UICN.
[EN] A new freshwater fish species, Achondrostoma salmantinum, formerly considered as one population of Iberochondrostoma lemmingii, is described on the basis of genetic and morphological characters. The new species inhabits the rivers Huebra, Águeda and Uces and tributaries in the Duero River basin in Salamanca province, western Spain. The species is distinguished from Iberochondrostoma lemmingii and from other species of the genus Achondrostoma according to morphometric, meristic and genetic characters such as a narrow caudal peduncle, long postorbital and head lengths, small number of scales (9-10/44-53/4-6), small number of gill rakers (15-22), usually 5-5 pharyngeal teeth, four diagnostic isozyme loci (IDHP-2*, IDHP-3*, MDH-B* and PEP*) and one unique allele (MDH-A*95). The distribution of I. lemmingii is currently known to be restricted to the Tajo, Guadiana, Odiel and Guadalquivir basins. This new cyprinid is considered Endangered (EN) according to IUCN Red List Categories.
This study was financially sponsored by a DGES project REM2001-0662/G10.
10 pages, 4 figures, 2 tables.
Peer reviewed
Cypriniformes, Taxonomía, Peces de agua dulce, Río Duero, Duero river, Freshwater fishes, Península Ibérica, Taxonomy, Iberian Peninsula
Cypriniformes, Taxonomía, Peces de agua dulce, Río Duero, Duero river, Freshwater fishes, Península Ibérica, Taxonomy, Iberian Peninsula
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