Aves |
Anseriformes |
Anatidae
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
; لب شور; تغييرات عمق 0 - 1 m (مرجع 115936), usually 0 - ? m. Polar
Northeast Pacific, Northeast Atlantic and the Arctic. Temperate to polar.
Length at first maturity / Size / Weight / سن
بلوغ: Lm ?  range ? - ? cm Max length : 46.0 cm TL جنس نر / بدون خواص جنسي; (مرجع 94965); بيشينه وزن گزارش شده: 622.50 g (مرجع 356)
Culmen: 2.555 cm; tarsus: 3.675 cm; wing: 20.15 cm (Ref. 356). Medium-sized duck; male: blue overall; white slashes on shoulder, neck and back; white spots on head and neck; chestnut flanks; female: brown overall; white ear spot (Ref. 94965).
Depth range based on occurrence (Ref. 115936), to be replaced with a better reference. Surface diving; dabbling; coastal. Diet: Crabs (mainly Hemigrapsus nudus, Pagurus spp.), gastropods, polychaetes, amphipods, chitons, Mytilus edulis, limpets, barnacles, Clupea pallasi (eggs) and algae (Ref. 3985).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | Eggs | Fecundity | Larvae
مآخذ اصلی
مراجع | هماهنگ كننده | همكاران
SAUP Database. 2006. (مرجع 356)
وضعيت در فهرست قرمز IUCN
(مرجع 130435: Version 2024-2)
وضعيت از نظر سايتس (مرجع 108899)
Not Evaluated
Not Evaluated
خطر برای انسان ها
استفاده انسانی
| FishSource |
ابزارها
اطلاعات بيشتر
Population dynamicsرشدMax. ages / sizesLength-weight rel.Length-length rel.نوسانات طولیMass conversionفراواني 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): 1.2 - 11.3, mean 6.6 (based on 1201 cells).
Fishing Vulnerability
Moderate vulnerability (36 of 100).
طبقه قيمت
Unknown.