Mammalia |
Cetartiodactyla |
Balaenopteridae
पर्यावरण: पर्यावरण / जलवायु क्षेत्र / गहराई सीमा / वितरण सीमा
पारिस्थितिकी
पिलाजिक; औशिनोड़िरोमस (संदर्भ 75906); गहराई सीमा 80 - 500 m (संदर्भ 1005). Polar; 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.
प्रथम परिपक्वता पर लंबाई / आकार / वज़न / आयु
परिपक्व अवधि: Lm ? range ? - ? cm Max length : 3,300 cm TL पुल्लिंग / अलिंग; (संदर्भ 99323); अधिकतम प्रकाशित वज़न: 160.0 t (संदर्भ 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).
जीवन चक्र और संभोग व्यवहार
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | उपजाऊपन | लार्वा
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. (संदर्भ 1394)
आईयूसीएन रेड लिस्ट स्थिति
(संदर्भ 130435: Version 2025-2 (Global))
CITES स्थिति (संदर्भ 108899)
CMS (संदर्भ 116361)
मनुष्यों के लिए ख़तरा
मानव उपयोग
मात्स्यिकी: व्यापारिक
FAO - मात्स्यिकी: प्रजातियों की प्रोफ़ाइल, landings search; Publication: search | FishSource | हमारे चारों ओर समुद्र
साधन
अधिक जानकारी
फिजियोलॉजीप्राणवायु की खपत
मानव संबंधीटिकट, सिक्के, विविध.
इंटरनेट स्रोत
मॉडल पर आधारित अनुमान
लौटाव
(Ref. 69278): |
निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (K=0.08-0.09; tm=11) |
मछली पकड़ने की भेद्यता
(संदर्भ 71543) |
Very high vulnerability (84 of 100). |
मूल्य श्रेणी
(संदर्भ 80766): |
Unknown. |
