Aves |
Charadriiformes |
Alcidae
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
; تغييرات عمق 0 - 60 m (مرجع 62269). Temperate; 62°N - 28°N, 119°E - 115°W
Northern, Western and Eastern Pacific Ocean. Boreal to subtropical.
Length at first maturity / Size / Weight / سن
بلوغ: Lm ? range ? - ? cm Max length : 38.0 cm TL جنس نر / بدون خواص جنسي; (مرجع 8812); بيشينه وزن گزارش شده: 520.00 g (مرجع 356)
Culmen: 3.45 cm; tarsus: 3.0 cm; wing: 15.24 cm.
Total Length: 35 to 38 cm (Ref. 8812). Pursuit diver; coastal; <50 km (Ref. 356). On the Farallon Islands, this species usurps nests of smaller Cassin's Auklet by destroying eggs or chicks thereby effectively lowering its habitat competitor's reproductive success. Nest site prospecting at night. Diurnal, particularly where Auklets nest in caves, but completely nocturnal where Bald Eagle colonies are present. Based on stable isotope analysis (SIA) diet study of egg albumin, belongs to higher N signature group (based on ratios of stable isotopes of nitrogen and carbon): piscivorous (Ref. 87784).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | Eggs | Fecundity | Larvae
مآخذ اصلی
مراجع | هماهنگ كننده | همكاران
Watanuki, Y. 1987 Breeding biology and foods of Rhinoceros Auklets on Teuri Island, Japan. Proceedings of the NIPR Symposium on Polar Biology 1:175-183. (مرجع 4542)
وضعيت در فهرست قرمز IUCN
(مرجع 130435: Version 2025-1)
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): 6.1 - 17.6, mean 9.7 (based on 690 cells).
جهندگی
زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (K=9.33-35.4).
Fishing Vulnerability
Low to moderate vulnerability (28 of 100).
طبقه قيمت
Unknown.
