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Prosopium cylindraceum  (Pennant, 1784)

Round whitefish
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Native range
This map was computer-generated and has not yet been reviewed.
Prosopium cylindraceum   AquaMaps   Data sources: GBIF OBIS
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Image of Prosopium cylindraceum (Round whitefish)
Prosopium cylindraceum
Picture by Steinhart, G.B.

Classification / Names Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinoptérygiens (poissons à nageoires rayonnées) > Salmoniformes (Salmons) > Salmonidae (Salmonids) > Coregoninae
Etymology: Prosopium: Greek, prosopon = face (Ref. 45335);  cylindraceum: cylindraceum meaning like a cylinder (Ref. 1998).

Environment: milieu / climate zone / depth range / distribution range Écologie

; eau douce; saumâtre démersal; potamodrome (Ref. 51243); profondeur ? - 72 m (Ref. 1998), usually ? - 37 m (Ref. 1998).   Temperate; 71°N - 43°N

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

North America: Arctic and Pacific drainages from western Hudson Bay in Canada to Alaska and northern British Columbia, Canada; Arctic and Atlantic drainages from Labrador in Canada to Connecticut, USA and west through St. Lawrence-Great Lakes basin in Canada-USA (except Lake Erie). Northern Asia: widely distributed in Siberian rivers (Ref. 26334).

Length at first maturity / Taille / Poids / Âge

Maturity: Lm 30.0  range ? - ? cm
Max length : 59.0 cm TL mâle / non sexé; (Ref. 40637); common length : 28.5 cm TL mâle / non sexé; (Ref. 12193); poids max. publié: 2.7 kg (Ref. 4699); âge max. reporté: 16 années (Ref. 28860)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 0; Rayons mous dorsaux (Total): 11-15; Épines anales 0; Rayons mous anaux: 10 - 13. Body slender, elongate, almost cylindrical in cross section, posteriorly somewhat compressed laterally, greatest depth in front of the dorsal fin. Head relatively short; eye moderate, its diameter less than snout length; snout pointed, "pinched" or compressed laterally, rounded in lateral view, a single flap of skin present between the nostrils; mouth small, ventral in position, overhung by snout; maxillaries extending posteriorly almost to anterior margin or eye in adults. This species has more color than most coregonids. Overall coloration of adults almost silvery, silvery white below. Scales specially on back, with well-defined, dark pigmented borders, making them conspicuous. Pectoral fins are amber in color, slight amber tint also to pelvic and anal fins. Pectoral fins take on an orange tint during spawning, the pelvic and anal fins also to a lesser extent. the adipose fin is usually brown spotted, particularly in specimens from central and eastern Canada. Two or more longitudinal rows of black spots are present on the sides of young specimen.

Biologie     Glossaire (ex. epibenthic)

Inhabits shallow areas of lakes and clear streams, rarely entering brackish water (Ref. 5723). Also in rivers with swift current and stony bottom. Migration is limited to movements associated with spawning (Ref. 27547). Epipelagic (Ref. 58426). Feeds on benthic invertebrates and occasionally on fishes (Ref. 1998) and fish eggs (Ref. 593). One specimen taken from a depth of 218.9 m in eastern Lake Superior, off Grand Marais, Michigan (Ref. 1998).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

There are inshore and upstream movements (Ref. 28863) that may be related to spawning (Ref. 27547). Swims in pairs during spawning (Ref. 28858). Also Ref. 28803.

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)

Statut dans la liste rouge de l'IUCN (Ref. 115185)

  Non évalué 

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless




Utilisations par l'homme

Pêcheries: intérêt commercial mineur; pêche sportive: oui
FAO(Publication : search) | FishSource |

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00322 - 0.00854), b=3.23 (3.09 - 3.37), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Niveau trophique (Ref. 69278):  3.3   ±0.41 se; Based on food items.
Résilience (Ref. 69278):  Faible, temps minimum de doublement de population : 4,5 à 14 années (tm=5-7; tmax=16; Fec=1,000).
Prior r = 0.37, 2 SD range = 0.17 - 0.82, log(r) = -0.99, SD log(r) = 0.39, Based on: 10 K, 6 tgen, 1 tmax, 3 Fec records
Vulnérabilité (Ref. 59153):  Moderate to high vulnerability (51 of 100) .
Catégorie de prix (Ref. 80766):   Very high.