Ursus maritimus, Polar bear : fisheries
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Ursus maritimus   Phipps, 1774

Polar bear
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Image of Ursus maritimus (Polar bear)
Ursus maritimus

رده بندی / Names اسامي عام | مترادف | CoL | ITIS | WoRMS

Mammalia | Carnivora | Ursidae

Environment: milieu / climate zone / تغييرات عمق / distribution range بوم شناسي

نزديك كف زي.  Polar

Distribution كشورها | مناطق سازمان خوار و بار جهاني (FAO) | Ecosystems | ظهور | معرفي

Atlantic Ocean and the Arctic: Ursus maritimus maritimus: Canada, Northwest Territories, Baffin Island, Greenland, Svalbard, Russia, Labrador, Newfoundland, Quebec, Iceland, Norway; Ursus maritimus marinus: Russia, Beaufort Sea, Alaska, Bering Sea, Kamchatka, Kuril Island, Sea of Okhotsk, Japan (Ref. 1522).

Length at first maturity / Size / Weight / سن

بلوغ: Lm ?  range ? - ? cm Max length : 250 cm TL جنس نر / بدون خواص جنسي; (مرجع 1394); 200 cm TL (female); بيشينه وزن گزارش شده: 800.0 kg (مرجع 1394); بيشينه وزن گزارش شده: 800.0 kg

توصيف مختصر ريخت شناسي

Fur color: white, yellow, grey, or almost brown, depending on season and light conditions; black skin, including nose and lips; plantigrade; claws not retractable.

زيست شناسي     واژه نامه (بعنوان مثال epibenthic)

Generally associated with ice, but they have been swimming at sea many kilometers away from the nearest land. Feeds on ringed, bearded, harp and hooded seals, and rarely walruses and white whales; sometimes eat arctic cod and other forms of animal and vegetable matter (Ref. 1394). Generally associated with ice, but they have been swimming at sea many kilometers away from the nearest land. Feeds on ringed, bearded, harp and hooded seals, and rarely walruses and white whales; sometimes eat arctic cod (Ref. 1394), charr, sculpin, and plants (Ref. 81152). They display migration patterns and spend time on the ice for hunting, a positive energy state, and move to their terrestrial habitat, a negative energy state, when the ice melts. Earlier ice break-ups show earlier arrival of polar bears ashore (Ref. 93189).

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)

  آسیب پذیر، به فهرست قرمز IUCN مراجعه کنید (VU) (A3c); Date assessed: 27 August 2015

وضعيت از نظر سايتس (مرجع 108899)

Appendix II: International trade monitored

CMS (مرجع 116361)

Appendix II: Migratory species conserved through agreements

خطر برای انسان ها

استفاده انسانی

ماهي گيري – شيلات: تجاري
FAO - ماهي گيري – شيلات: نمايه گونه | FishSource | Sea Around Us

ابزارها

E-book | راهنماي صحرايي

اطلاعات بيشتر

Trophic Ecology
Food items (preys)
تركيب غذايي
مصرف غذايي
شکارچیان
بوم شناسي
بوم شناسي
Population dynamics
رشد
Max. ages / sizes
Length-weight rel.
Length-length rel.
نوسانات طولی
Mass conversion
فراواني
Life cycle
تولید مثل
بلوغ
Fecundity
تخم ریزی
Eggs
نمو تخم
Larvae
Distribution
كشورها
مناطق سازمان خوار و بار جهاني (FAO)
Ecosystems
ظهور
معرفي
Physiology
Oxygen consumption
Human Related
Stamps, coins, misc.
Outreach
همكاران
Taxonomy
اسامي عام
مترادف
ريخت شناسي
عکس ها
مراجع
مراجع

منابع اينترنتي

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(ماهي گيري – شيلات: نمايه گونه; publication : search) | Fishipedia | GenBank (ژنوم, نوکلئوتيد) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (برو, جستجو) | Zoological Record

Estimates based on models

جهندگی (Ref. 69278): زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (K=0.52-0.78; tm=4.1).
Fishing Vulnerability (مرجع 71543): High vulnerability (64 of 100).
طبقه قيمت (مرجع 80766): Unknown.

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