Corègon del llac Léman

Corègon del llac Léman

Coregonus nasus
Estat de conservació
Risc mínim
UICN	5370
Taxonomia
Superregne	Holozoa
Regne	Animalia
Fílum	Chordata
Classe	Actinopteri
Ordre	Salmoniformes
Família	Salmonidae
Gènere	Coregonus
Espècie	Coregonus nasus (Pallas, 1776)
Nomenclatura
Sinònims	Coregonus kennicotti (Milner, 1883) Salmo nasutus (Pallas, 1776)

El corègon del llac Léman (Coregonus nasus) és una espècie de peix de la família dels salmònids i de l'ordre dels salmoniformes.

Morfologia

• Els mascles poden assolir 71 cm de llargària total i 16 kg de pes.
• Presenta una aleta adiposa.
• Nombre de vèrtebres: 60-65.
• El ventre és de color blanc a groguenc i les aletes, en general, són de color gris en els adults i pàl·lid en els joves.

Alimentació

Menja larves d'insectes aquàtics, petits mol·luscs i crustacis.

Hàbitat

Es troba amb major freqüència als rierols.

Distribució geogràfica

Es troba a l'Àrtic des del riu Pechora (Rússia) fins a Nord-amèrica (Alaska i el Canadà).

Longevitat

Viu fins als 15 anys.

Vàlua econòmica

La seua carn és molt apreciada i és venuda fresca, assecada o fumada.

Bibliografia

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• Graves, J. i E. Hall 1988. Arctic Animals Department of Renewable Resources, Government of the Northwest Territories, Yellowknife, N.W.T., Canadà. 85 p.
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• Hatfield, C.T., J.N. stein, M.R. Falk i C.S. Jessop 1972. Fish resources of the Mackenzie River valley. Department of the Environment, Fisheries Service, Interim Rep. 1, vol. 1, Winnipeg, Manitoba.
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• Jordan, D.S. i C.H. Gilbert 1883. A synopsis of the fishes on North America. Bull. U.S. Natl. Mus. 16:1-1018.
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• Lugas'kov, A.V. i L.N. Stepanov 1989. Feeding and movement of broad whitefish, Coregonus nasus, in the lower Ob' basin. J. Ichthyol. 29(1):64-72.
• Lundqvist, C., J. Schroder, A. Chapelle i M. Himberg 1976. The karyotype of Coregonus nasus sensu Svärdson from the archipelago of Aland. Hereditas 84:246.
• Ma, X., X. Bangxi, W. Yindong i W. Mingxue 2003. Intentionally introduced and transferred fishes in China's inland waters. Asian Fish. Sci. 16(3&4):279-290.
• Machniak, K. 1976. The aquatic resources of the Ya YA Esker in the Mackenzie River delta. Aquatic Environments Limited (Consultants Report 3) to Dept. Fish. Oceans, Winnipeg, Manitoba.
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• McPhail, J.D. i R. Carveth 1993. Field key to the freshwater fishes of British Columbia. Fish Museum, Department of Zoology, U.B.C., Canadà, 239 p.
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• Muth, K.M. 1969. Age and growth of the broad whitefish, Coregonus nasus, in the Mackenzie and Coppermine rivers, Northwest Territories. J. Fish. Res. Board Can. 26:2252-2256.
• Nelson, J.S., E.J. Crossman, H. Espinosa-Pérez, L.T. Findley, C.R. Gilbert, R.N. Lea i J.D. Williams 2004. Common and scientific names of fishes from the United States, Canada, and Mexico. American Fisheries Society, Special Publication 29, Bethesda, Maryland, Estats Units.
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• Reshetnikov, Y.S., 1980. (Ecology and systematics of the coregonid fishes). Nauka, Moscou.
• Reshetnikov, Y.S., N.G. Bogutskaya, E.D. Vasil'eva, E.A. Dorofeeva, A.M. Naseka, O.A. Popova, K.A. Savvaitova, V.G. Sideleva i L.I. Sokolov 1997. An annotated check-list of the freshwater fishes of Russia. J. Ichthyol. 37(9):687-736.
• Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea i W.B. Scott 1980. A list of common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Publ. (12)1-174.
• Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea i W.B. Scott 1991. Common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Pub. (20):183 p.
• Scott, W.B. i E.J. Crossman 1973. Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184:1-966.
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• Viktorovsky, R.M. i L.N. Ermolenko 1982. The chromosomal complexes of Coregonus nasus and Coregonus lavaretus and the problem of the Coregonus karyotype divergence. Tsitologiya (Cytology). 24(7):797-801. Leningrad.
• Walters, V. 1955. Fishes of the western arctic America and eastern arctic Siberia, taxonomy and zoogeography. Bull. Am. Mus. Nat. Hist. N.Y. 106(5):255-368.
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Enllaços externs

• «Coregonus nasus». Catalogue of Life. (anglès) (anglès)