Mammalia |
Carnivora |
Phocidae
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
موجوداتی که در اعماق زیر 200 متر زندگی و تغذیه می کنند. Temperate; 90°N - 0°S, 180°W - 180°E
Atlantic Ocean, Pacific Ocean, the Arctic and North America Inland Waters: Portugal, Iceland, Greenland, Canada Newfoundland, Spain, France, Belgium, Ireland, Netherlands, Germany, Denmark, Norway, Sweden Lithuania, Poland, Latvia, Estonia, Finland, Russia, UK, USA, Canada, Mexico, Alaska, Japan, Kamchatka (Ref. 1394), Br Scotland, Madeira, British Columbia, Kuril Island, Sea of Okhotsk, Gulf of California, Baltic Sea, Barents Sea, Hudson Bay (Ref. 1522); Phoca vitulina vitulina: Portugal, UK, Iceland, Greenland, Br Scotland, Norway, Madeira, Baltic Sea, Barents Sea; Phoca vitulina concolor: Canada, Hudson Bay, USA, Greenland, Iceland; Phoca vitulina richardii: Mexico, Alaska, British Columbia, USA, Gulf of California; Phoca vitulina stejnegeri: Japan, Kamchatka, Alaska, Sea of Okhotsk, Kuril Island; Phoca vitulina mellonae: Hudson Bay, James Bay. Temperate to polar regions.
Length at first maturity / Size / Weight / سن
بلوغ: Lm ?  range ? - ? cm Max length : 190 cm TL جنس نر / بدون خواص جنسي; (مرجع 1394); 170 cm TL (female); بيشينه وزن گزارش شده: 150.0 kg (مرجع 1394); بيشينه وزن گزارش شده: 150.0 kg
Found in coastal waters of the continental shelf and slope (Ref. 1394); and whelp in groups on beaches, sandbars, and rocky reefs (Ref. 1522). Feeds on a wide variety of fish, cephalopods, and crustaceans of surface, mid-water and benthic habitats (Ref. 1394). It is preyed upon by the great white shark (Ref. 32140). Found in coastal waters of the continental shelf and slope (Ref. 1394); and whelp in groups on beaches, sandbars, and rocky reefs (Ref. 1522). Also for resting, moulting and lactation during low tides. Typically perform U-shaped dives. Leave the coast on foraging trips to deeper offshore waters where prey is abundant (Ref. 96347). Feeds on a wide variety of fish, cephalopods, and crustaceans of surface, mid-water and benthic habitats (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)
Not Evaluated
خطر برای انسان ها
استفاده انسانی
ماهي گيري – شيلات: تجاري
FAO - ماهي گيري – شيلات: landings, نمايه گونه | FishSource | Sea Around Us
ابزارها
اطلاعات بيشتر
Life cycleتولید مثل
بلوغ
Fecundity
تخم ریزی
Eggs
نمو تخم
Larvae
PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
منابع اينترنتي
Estimates based on models
Preferred temperature
(Ref.
115969): 3.4 - 11.2, mean 8.7 (based on 1375 cells).
جهندگی
متوسط, كمينه زمان لازم براي دو برابر شدن جمعيت 4/1 – 4/4 سال (K=0.09-0.4).
Fishing Vulnerability
High to very high vulnerability (74 of 100).
طبقه قيمت
Unknown.