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; 45°N - 13°N, 140°W - 180°E
Eastern Central Pacific: USA and Mexico.
初熟時的長度 / 大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm Max length : 190 cm TL 雄魚/尚未辨別雌雄; (參考文獻 1394); 140 cm TL (female); 最大體重: 170.0 kg (參考文獻 1394); 最大體重: 170.0 kg
Dusky black with lighter ventrum. Gray head and shoulders, black nose with brown-red hair around the eyes. Guard hairs are white-tipped in adult males. Claws present in 5 fingers and absent on the 1st and 5th toes. Cartilaginous webbing extends past the claws. Females have 2 pairs abdominal nipples.
Found at sea, on beaches; when ashore, they prefer volcanic caves and grottos, or other rocky habitats. Found at sea, on beaches; when ashore, they prefer volcanic caves and grottos, or other rocky habitats. Both male and female territorial. Extralimital sightings in California corresponds with El Niño events (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
Breeds near or in caves marked by the male as his territory. Mating occurs postpartum. Pups nurse for 9 to 11 months during which nursing females fast for an average of 5 days.
主要參考資料
參考文獻 | 合作者 | 合作者
Jefferson, T.A., S. Leatherwood and M.A. Webber 1993 FAO species Identification Guide: Marine Mammals of the World. Rome, FAO. 320 p. + 587 figures. (參考文獻 1394)
IUCN 瀕危狀態
(參考文獻 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 10 October 2014
CITES狀態 (參考文獻 108899)
Not Evaluated
對人類具威脅
人類使用
漁業: 商業性
FAO - 漁業: 魚種描繪; Publication: search | FishSource | 周邊海洋
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
釣魚的脆弱性
(參考文獻 71543) |
Very high vulnerability (90 of 100). |
價格種類
(參考文獻 80766): |
Unknown. |
