Mammalia |
Cetartiodactyla |
Balaenopteridae
Environment: milieu / climate zone / depth range / distribution range
生態學
大洋性; 海洋洄游的 (Ref. 75906); 深度上下限 80 - 500 m (Ref. 1005). ; 90°N - 90°S, 180°W - 180°E
North Atlantic and North Pacific: Balaenoptera musculus musculus.
North Atlantic [IUCN 2010 (Ref. 84930): VU, D1] and North Pacific [IUCN 2010 (Ref. 84930): LR/cd.
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm Max length : 3,300 cm TL 雄魚/尚未辨別雌雄; (Ref. 99323); 最大體重: 160.0 t (Ref. 1394)
The largest whales of the world's oceans. They can be seen from the equator to the pack ice edges in both hemispheres, with most poleward intrusions in both hemispheres in summer. Some are resident, others are migratory. Feeds on krill (Ref. 1394). Feeds at depths less than 100 m (Ref. 1005). From the time faster catcher boats and explosive harpoons made them catchable, blue whales were hunted relentlessly from the late 19th through the mid 20th centuries. As the largest whales, they were the most sought after of the rorquals. Although most populations remain well below pre-exploitation levels, some stocks (such as those that feed off California) have shown encouraging signs of recovery since protection by the International Whaling Commission (IWC) in 1965. At least in the eastern North Atlantic and the eastern North Pacific, numbers appear to be on the rise (Ref. 1394). In general, they occur in coastal, shelf, and oceanic waters (Ref. 122680). They can be seen from the equator to the pack ice edges in both hemispheres, with most poleward intrusions in both hemispheres in summer. Some are resident, others are migratory (Ref. 1394). Known as 'gulpers,' feeding in separate events, often lunging at large schools of fish (Ref. 122680). Feeds on krill (Ref. 1394). Feeds at depths less than 100 m (Ref. 1005).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
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. (Ref. 1394)
IUCN 瀕危狀態 (Ref. 130435)
瀕危 (EN) (A1abd); Date assessed: 16 March 2018
CITES狀態 (Ref. 108899)
對人類具威脅
人類使用
漁業: 商業性
FAO - 漁業: landings, 魚種描繪 | FishSource | 周邊海洋
工具
網路資源
Estimates based on models
Preferred temperature
(Ref.
115969): 0.2 - 3.3, mean 1.6 (based on 32832 cells).
回復力
低的, 最小族群倍增時間4.5 - 14 年 (K=0.08-0.09; tm=11).
瀕危性
Very high vulnerability (79 of 100).
價格種類
Unknown.
