Mammalia |
Cetartiodactyla |
Monodontidae
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
سطح زی; لب شور; تغييرات عمق 0 - 862 m (مرجع 122879). Polar; 90°N - 0°S, 180°W - 180°E
Northern Atlantic, Northern Pacific, the Arctic and Inland Waters. [IUCN 2010 (Ref. 84930): CR, C2a(ii).]
Length at first maturity / Size / Weight / سن
بلوغ: Lm ? range ? - ? cm Max length : 550 cm TL جنس نر / بدون خواص جنسي; (مرجع 1394); 410 cm TL (female); common length : 430 cm TL جنس نر / بدون خواص جنسي; (مرجع 118436); common length :380 cm TL (female); بيشينه وزن گزارش شده: 1.6 t (مرجع 1394)
Minimum depth from Ref. 117401. Death of this species can result from predation by polar bears and killer whales, ice entrapments and diseases. There are at least seven (7) stocks of belugas in the North American Arctic based on mitochondrial and nuclear DNA markers (Ref. 118436). Found in shallow coastal waters, and occasionally moves into deep, offshore waters. In the summer, they aggregate in large numbers in shallow estuaries. They primarily feed on various species of fish, combined with a wide variety of mollusks and benthic invertebrates which are found on or near the bottom (Ref. 1394).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | Eggs | Fecundity | Larvae
مآخذ اصلی
مراجع | هماهنگ كننده | همكاران
Jefferson, T.A., S. Leatherwood and M.A. Webber 1993 FAO species Identification Guide: Marine Mammals of the World. Rome, FAO. 320 p. + 587 figures. (مرجع 1394)
وضعيت در فهرست قرمز IUCN
(مرجع 130435: Version 2025-1)
وضعيت از نظر سايتس (مرجع 108899)
خطر برای انسان ها
استفاده انسانی
ماهي گيري – شيلات: تجاري
FAO - ماهي گيري – شيلات: landings, نمايه گونه | FishSource | Sea Around Us
ابزارها
اطلاعات بيشتر
PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
منابع اينترنتي
Estimates based on models
Preferred temperature
(Ref.
115969): -1.8 - 2.3, mean -0.7 (based on 12736 cells).
جهندگی
متوسط, كمينه زمان لازم براي دو برابر شدن جمعيت 4/1 – 4/4 سال (K=0.06-0.35; tm=7).
Fishing Vulnerability
Very high vulnerability (79 of 100).
طبقه قيمت
Unknown.
