Mammalia |
Carnivora |
Otariidae
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
深海底的. Subtropical; 45°N - 13°N, 140°W - 180°E
Eastern Central Pacific: USA and Mexico.
首次成熟时的长度 / 大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm Max length : 190 cm TL 雄鱼/尚未辨别雌雄; (参考文献 1394); 140 cm TL (female); 最大体重: 170.0 kg (参考文献 1394); 最大体重: 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).
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
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.
主要参考文献
参考文献 | 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. (参考文献 1394)
世界自然保护联盟红皮书
(参考文献 130435: Version 2025-2 (Global))
Not Evaluated
对人类的威胁
人类利用
渔业: 商业性
FAO - 渔业: 物种外形; Publication: search | FishSource | 周边海洋
工具
网络资源
基于模型的估算
渔业脆弱性
(参考文献 71543) |
Very high vulnerability (90 of 100). |
价格分类
(参考文献 80766): |
Unknown. |
