Mammalia |
Carnivora |
Otariidae
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
深海底的. Subtropical; 90°N - 0°S, 180°W - 180°E
Pacific Ocean, Northeast Atlantic and the Arctic. Tropical to temperate.
初熟時的長度 / 大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm Max length : 330 cm TL 雄魚/尚未辨別雌雄; (參考文獻 1394); 250 cm TL (female); common length : 310 cm TL 雄魚/尚未辨別雌雄; (參考文獻 80659); common length :240 cm TL (female); 最大體重: 1.1 t (參考文獻 80659); 最大體重: 1.1 t
Sexually dimorphic. Coloration when dry is pale yellow to light tan with dark brown undersides and near their flippers. When wet, color is grayish white. Pelage is short coarse hairs. Mature males develop a prominent mane on the necks and chests, with heads that are more robust with a flatter snout than females.
Inhabits coastal and immediate offshore waters (Ref. 1522). Preyed upon by great white sharks (Ref. 32140). Coastal and immediate offshore waters (Ref. 1522). Non-migratory but may disperse considerably from breeding sites. Appears to feed along the continental shelf and break (Ref. 80660). Found from the coast to the outer continental shelf; they frequent deep oceanic waters in some parts of the range. Feeds on many varieties of fish and squid, prefers bottom species; feeding occurs at night (Ref. 1394).
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Only sexually mature Steller sea lions return to rookeries, except for few dependent young with their mothers. Gestation results only one pup which is nursed for under a year up to 3 years. Mothers stay on shore with their newborn for about a week before leaving for regular feeding trips. Copulation usually occur prior to first feeding trip. Longevity lasts about 14 years for males and 22 years for females, with a generation time of 10 years.
主要參考資料
參考文獻 | 合作者 | 合作者
Rice, D.W. 1998 Marine Mammals of the World Systematics and Distribution. Special Publication number 4: The Society for Marine Mammalogy. 231p. (參考文獻 1522)
IUCN 瀕危狀態
(參考文獻 130435: Version 2025-2 (Global))
近危 (NT) ; Date assessed: 04 February 2016
CITES狀態 (參考文獻 108899)
Not Evaluated
Not Evaluated
對人類具威脅
人類使用
漁業: 商業性
FAO - 漁業: 魚種描繪, landings search; Publication: search | FishSource | 周邊海洋
工具
網路資源
基於模型的估計
回復力
(Ref. 69278): |
中等的, 族群倍增時間最少 1.4 - 4.4年 (K=0.17-0.54) |
釣魚的脆弱性
(參考文獻 71543) |
High to very high vulnerability (72 of 100). |
價格種類
(參考文獻 80766): |
Unknown. |
![Image of Eumetopias jubatus (Steller\](/images/thumbnails/gif/Tn_Eujub_u0.gif "Image of Eumetopias jubatus (Steller\")