Aves |
Charadriiformes |
Alcidae
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
Others; 深度上下限 0 - 36 m (參考文獻 61831). Polar; 62°N - 34°N, 171°E - 120°W (參考文獻 125423)
Pacific Ocean: California to the Aleutian Islands. Boreal to subtropical.
初熟時的長度 / 大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm Max length : 25.0 cm TL 雄魚/尚未辨別雌雄; (參考文獻 8812); 最大體重: 202.50 g (參考文獻 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). Coastal; can be found offshore up to 300 km; thermal fronts, water <30 m deep; glacial-affected. Pursuit divers (Ref. 356). Crepuscular to nocturnal. Mate prospecting thru display and calls; nocturnal vocal displays minimal. Direct or indirect intra- and interspecific competition for nest sites. Nests in trees (Ref. 87784). Breeding pairs maintain isolation from colony until the eggs are laid (Ref. 95051). Feeds on hatchery-released pink salmon and chum salmon in Prince William Sound, Alaska. Population decline associated with mortality in fishing nets (Ref. 87784).
生命週期和交配行為
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 Growth of a nestling Marbled Murrelet. Condor 83:264-265. (參考文獻 8541)
IUCN 瀕危狀態
(參考文獻 130435: Version 2025-2 (Global))
瀕危 (EN) (A2bce+3bce+4bce); Date assessed: 27 July 2020
CITES狀態 (參考文獻 108899)
Not Evaluated
Not Evaluated
對人類具威脅
人類使用
FAO - Publication: search | FishSource |
工具
更多資訊
人口動態成長最大年齡/尺寸長度重量比長度關係長度-頻率質量轉換豐度
網路資源
基於模型的估計
回復力
(Ref. 69278): |
高度, 族群倍增時間少於 15個月 (K=60.76) |
釣魚的脆弱性
(參考文獻 71543) |
Low vulnerability (15 of 100). |
價格種類
(參考文獻 80766): |
Unknown. |
