Leuciscus bearnensis (Blanchard 1866)

Leuciscus bearnensis és una espècie de peix de la família dels ciprínids i de l'ordre dels cipriniformes, registrada en algunes localitats de la conca de l'Ador^[3] (d'aquí l'epítet bearnensis, del Bearn). Estudis recents de taxonomia molecular han posat en dubte si Leuciscus bearnensis i Leuciscus oxyrrhis, de la propera conca del Garona, són realment espècies diferents.^[4]

Referències

Bibliografia

• Eschmeyer, William N., ed. 1998. Catalog of Fishes. Special Publication of the Center for Biodiversity Research and Information, núm. 1, vol. 1-3. California Academy of Sciences. San Francisco (Califòrnia), Estats Units. 2905. ISBN 0-940228-47-5.
• Helfman, G., B. Collette i D. Facey: The diversity of fishes. Blackwell Science, Malden, Massachusetts (Estats Units), 1997.
• McAllister, D.E., 1990. A working list of fishes of the world. Copies available from D.E. McAllister, Canadian Museum of Nature, P.O. Box 3443, Ottawa, Ontàrio K1P 6P4, Canadà. 2661 p. plus 1270 p. Index
• Moyle, P. i J. Cech.: Fishes: An Introduction to Ichthyology, 4a edició, Upper Saddle River, Nova Jersey, Estats Units: Prentice-Hall. Any 2000.
• Nelson, J.: Fishes of the World, 3a edició. Nova York, Estats Units: John Wiley and Sons. Any 1994.
• Wheeler, A.: The World Encyclopedia of Fishes, 2a edició, Londres: Macdonald. Any 1985.

The Bearn beaked dace (Leuciscus bearnensis) is a putative species of cyprinid fish, recorded from several localities in the Adour drainage in France.

Description

The Bearn beaked dace is distinguished from other western European members of the genus Leuciscus by having a keel which runs from its nape to the origin of the dorsal fin, a projecting snout which has a rounded tip and a projecting upper jaw, the dorsal profile of head and body shows a distinct hump; the snout is 32-35% of the length of the head; and the lateral line has around 47-52 scales.^[2] It also has thick, fleshy lips and a large eye, the diameter of them being approximately a fifth to a quarter of the length of the head. It grows to 280mm in standard length.^[4]

Distribution

The Bearn beaked dave occurs only in the drainage basin of the Adour in south-western France^[4]

Habitat and ecology

The Bearn beaked dace is found in streams, especially in sections of the streams which have clear water and current with cool, deep pools.^[1]

See also

• Beaked dace
• Long-snout dace

References

Leuciscus bearnensis Leuciscus generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cyprinidae familian.

Aturri ibaiaren arroan baino ez da bizi eta 28 cm.-ko luzera ere izan dezake.^[2]

Banaketa

Erreferentziak

• FhisBase.org

Ikus, gainera

• Leuciscus
• Cyprinidae

Leuciscus bearnensis is een straalvinnige vissensoort uit de familie van de eigenlijke karpers (Cyprinidae).^[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1866 door Blanchard.