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Prosopium cylindraceum (Pennant, 1784)

Round whitefish
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Image of Prosopium cylindraceum (Round whitefish)
Prosopium cylindraceum
Picture by Steinhart, G.B.

التصنيف / Names الأسماء الشائعة | مرادفات | Catalog of Fishes(جنس, الانواع) | ITIS | CoL | WoRMS | Cloffa

> 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 البيئة

; المياه العذبة; مياه مخلوطة قاعية التغذية و المعيشة; سمكة نهرية (Ref. 51243); نطاق العمق 4 - 72 m (Ref. 1998), usually ? - 37 m (Ref. 1998). Temperate; 2°C - 18°C (Ref. 1998); 72°N - 41°N, 103°E - 56°W (Ref. 86798)

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

Length at first maturity / الحجم / وزن / العمر

Maturity: Lm 30.0  range ? - ? cm
Max length : 59.0 cm TL ذكر/ مختلط الجنس; (Ref. 40637); common length : 28.6 cm TL ذكر/ مختلط الجنس; (Ref. 12193); أعلا وزن تم نشرة: 2.7 kg (Ref. 4699); العمر: 16 سنين (Ref. 28860)

وصف مختصر مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي

الأشواك الظهرية (المجموع) : 0; الأشعة الظهرية الناعمة (المجموع) : 11 - 15; شوكة شرجية: 0; أشعه شرجية لينه: 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.

أحياء     المصطلحات (على سبيل المثال epibenthic)

Inhabits shallow areas of lakes and clear streams and rarely enters brackish water (Ref. 5723, 86798). 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 النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae

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.

المرجع الرئيسي Upload your references | مراجع | المنظم | المتعاونين

Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)

IUCN Red List Status (Ref. 130435: Version 2024-1)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

خطر للأنسان

  Harmless





استخدامات بشرية

مصائد: غير مهمة تجارياً; لعبة سمكه: نعم
FAO - Publication: search | FishSource |

مزيد من المعلومات

Trophic ecology
عناصر الغذاء
التركيبة الغذائية
استهلاك الأغذية
Food rations
مفتريسات
Ecology
البيئة
Population dynamics
معاملات النمو
Max. ages / sizes
Length-weight rel.
Length-length rel.
الطول- الترددات
Mass conversion
توظيف
الوفرة
Life cycle
التكاثر
النضج
Maturity/Gills rel.
الخصوبة
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Spawning aggregations
بيض
تطور البيضة
Larvae
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Distribution
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Body composition
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جيني
Heterozygosity
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Stamps, coins, misc.
References
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مصادر علي الأنترنت

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00318 - 0.00827), b=3.23 (3.09 - 3.37), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
مستوى غذائي (Ref. 69278):  3.3   ±0.41 se; based on food items.
Generation time: 5.4 (3.4 - 9.4) years. Estimated as median ln(3)/K based on 11 growth studies.
المرونه (Ref. 120179):  منخفض, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 4.5-14 سنة (tm=5-7; tmax=16; Fec=1,000).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (51 of 100).
فئة السعر (Ref. 80766):   Very high.