A new species of the genus Achondrostoma Robalo, Almada, Levy & Doadrio, 2007 (Actynopterigii, Cyprinidae) from western Spain
DOI:
https://doi.org/10.3989/graellsia.2007.v63.i2.96Keywords:
Cypriniformes, freshwater fishes, taxonomy, Duero River, Iberian PeninsulaAbstract
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.
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