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Article . 2005 . Peer-reviewed
License: CC BY
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New species of the genus Chondrostoma Agassiz, 1832 (Actynopterigii, Cyprinidae) from western Portugal

Authors: Robalo, Joana Isabel; Almada, Vítor Carvalho; Santos, Carla Sousa; Moreira, Maria Inês Vasconcelos de Albergaria Pinheiro; Doadrio, Ignacio;

New species of the genus Chondrostoma Agassiz, 1832 (Actynopterigii, Cyprinidae) from western Portugal

Abstract

[ES] Se describe una nueva especie de ciprínido endémico del oeste de Portugal, Chondrostoma occidentale sp. n., sobre la base de peces colectados en las pequeñas cuencas costeras de los ríos Alcabrichel, Sizandro y Safarujo. La nueva especie comparte algunas características geneticas y morfologicas con C. oligolepis y C. arcasii con los cuales forma un grupo monofiletico. Se puede diferenciar de estas dos especies de Chondrostoma por una combinación de los siguientes caracteres: 40-43 (x = 40,9) escamas acanaladas en la línea lateral; 6-7 (x = 6,9) escamas por encima de la línea lateral; 2-3 (x = 2,9) por debajo de la línea lateral. La escama axilar es más corta o igual a la inserción de la aleta pelviana. El proceso coronoideo del dentario es muy robusto. La mínima distancia de divergencia para el citocromo b entre C. occidentale y otras especies de Chondrostoma fue de “p”= 4,8-5,9%. Esta nueva especie debe ser considerada En Peligro Crítico (CR) de acuerdo con las categorías de la lista Roja de la UICN.

[EN] A new cyprinid species endemic to western Portugal, Chondrostoma occidentale sp. n., is described based on fish collected in the small costal drainages of the Rivers Alcabrichel, Sizandro and Safarujo. The new species belongs to a monophyletic clade that also includes C. oligolepis and C. arcasii, with which it shares many molecular and morphological features. However, it can be distinguished from these two Chondrostoma species by a combination of the following characters: 40-43 (x = 40.9) canaliculate scales on the lateral line; 6-7 (x = 6.9) above the lateral line; 2-3 (x = 2.9) scales below the lateral line. The axilary pelvic scale is smaller than or at most equal to the base of the pelvic fin. The coronoid process of the dentary is very thick. The minimum divergence distances in cytochrome b between C. occidentale and C. oligolepis and C. arcasii was “p” = 4.8-5.9%. This new species should be considered Critically Endangered (CR) according to the IUCN Red List Categories.

This study was funded by the projects “Evolution of feeding and agonistic behaviour in cyprinid fishes of the genus Chondrostoma” (funded by ISPA) and Plurianual Program (Fundação para a Ciência e Tecnologia, FCT, UI&D 331/94, partially FEDER funded). C. Sousa Santos was also supported by a grant from FCT (SFRH/BD/8320/2002). J.I. Robalo and C. Sousa Santos benefited from grants from BiodIberia during the development of this study.

11 pages, 3 figures, 2 tables.

Peer reviewed

Countries
Spain, Portugal
Keywords

taxonomy, Western Portugal, Taxonomía, cyprinids, Chondrostoma occidentale, western Portugal, oeste de Portugal, Cyprinids, Ciprínidos, Oeste de Portugal, taxonomía, Taxonomy

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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