Aves |
Charadriiformes |
Alcidae
Environment: milieu / climate zone / depth range / distribution range
生態學
; 深度上下限 0 - 36 m (Ref. 61831). Polar; 62°N - 34°N, 171°E - 120°W (Ref. 125423)
Pacific Ocean: California to the Aleutian Islands. Boreal to subtropical.
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm ?  range ? - ? cm Max length : 25.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 8812); 最大體重: 202.50 g (Ref. 356)
Culmen: 1.6 cm; tarsus: 1.59 cm; wing: 12.7 cm.
An endangered species. Nesting habitat protected under ESA in the U.S. (Ref. 87784). Total Length: 24 to 25 cm (Ref. 8812).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Reproductive productivity of the species in Salish Sea declined by at most 50% over the past 150 years (Ref. 95036).
主要參考資料
參考文獻 | 合作者 | 合作者
Hirsch, K.V., D.A. Woodby and L.B. Astheimer. 1981. (Ref. 8541)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
瀕危 (EN) (A2bce+3bce+4bce); Date assessed: 27 July 2020
CITES狀態 (Ref. 108899)
Not Evaluated
Not Evaluated
對人類具威脅
人類使用
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更多資訊
Population dynamics成長年龄/大小長度-重量長度-長度長度-頻率Mass conversion入添量豐度 Human Related養殖資訊
Stamps, Coins Misc.
網路資源
Estimates based on models
Preferred temperature
(Ref.
115969): 5.6 - 13, mean 8.5 (based on 451 cells).
回復力
高度, 族群倍增時間少於 15個月 (K=60.76).
瀕危性
Low vulnerability (15 of 100).
價格種類
Unknown.