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इलाज़मौबरांकी (शारक और रेज़) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Hemigaleidae (Weasel sharks)
Etymology: Hemipristis: hemi-, from hemisys (Gr.), half; pristis, from pristes (Gr.), sawyer (but here meaning saw), allusion not explained, possibly referring to how marginal serrations of teeth of H. serra (type species, a fossil) do not extend over the entire length of each tooth (See ETYFish); elongata: Latin for prolonged, referring to its long and slim body (See ETYFish).
More on author: Klunzinger.
पर्यावरण: पर्यावरण / जलवायु क्षेत्र / गहराई सीमा / वितरण सीमा
पारिस्थितिकी
समुद्री ड़िमरसल; गहराई सीमा 1 - 130 m (Ref. 6871). Tropical; 41°N - 34°S, 12°E - 156°E (Ref. 6871)
Indo-West Pacific: Red Sea and southeast Africa, including Persian Gulf (Ref. 68964) to Philippines, north to China, south to Australia.
प्रथम परिपक्वता पर लंबाई / आकार / वज़न / आयु
परिपक्व अवधि: Lm ?, range 120 - ? cm
Max length : 259 cm TL पुल्लिंग / अलिंग; (Ref. 130455); common length : 200 cm TL पुल्लिंग / अलिंग; (Ref. 13567); अधिकतम प्रकाशित वज़न: 63.0 kg (Ref. 130455)
पृष्ठीय रीढ़ (सम्पूर्ण) : 0; गुदा कांटा: 0. A slender weasel shark with a long, broadly rounded snout, large curved, saw-edged teeth in the upper jaw, and hooked lower teeth protruding from mouth; gill slits long; fins strongly curved (Ref. 5578). Light grey or bronzy with no prominent markings (Ref. 5578).
Body shape (shape guide): elongated.
A coastal species, found inshore and offshore on the continental and insular shelves (Ref. 244). Feeds on sharks, rays and bony fishes (Ref. 244); also cephalopods (Ref. 13567). Viviparous (Ref. 50449). Thought to be potentially dangerous because of its large, fearsome teeth and shallow-water habitat, but has not been recorded in an attack on people (Ref. 244). Caught regularly by inshore gillnet, bottom trawl (occasionally) and longline fisheries (Ref.58048). Regularly taken in artisanal fisheries (Ref. 13567). Utilized fresh for human consumption, liver processed for vitamins, fins used in the oriental shark fin trade, and by-products processed into fishmeal (Ref. 244). Most adults below 200 cm (Ref. 30573).
जीवन चक्र और संभोग व्यवहार
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | उपजाऊपन | लार्वा
Viviparous, with 2 to 11 young in a litter (Ref. 6871) after a gestation period of 7-8 months; possibly reproduces in alternate years (Ref.58048). Size at birth about 45-52 cm TL (Ref. 13567, Ref.58048). Distinct pairing with embrace (Ref. 205).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
आईयूसीएन रेड लिस्ट स्थिति (Ref. 130435: Version 2025-2 (Global))
मनुष्यों के लिए ख़तरा
Traumatogenic (Ref. 5213)
मानव उपयोग
मात्स्यिकी: व्यापारिक
साधन
विशेष रिपोर्ट
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इंटरनेट स्रोत
मॉडल पर आधारित अनुमान
पसंदीदा तापमान (संदर्भ
123201): 23.8 - 29, mean 27.9 °C (based on 2110 cells).
जातिवृति विविधता सूचकांक (संदर्भ
82804): PD
50 = 1.0039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00172 - 0.00734), b=3.06 (2.88 - 3.24), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
ट्रॉफिक स्तर (संदर्भ
69278): 4.3 ±0.3 se; based on diet studies.
लौटाव (संदर्भ
120179): बहुत नीचे, न्यूनतम जनसंख्या दुगनी समय अवलागत 14 महीने। (Fec=2).
मछली पकड़ने की भेद्यता (Ref.
59153): Very high vulnerability (90 of 100).
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पोषक तत्व (Ref.
124155): Calcium = 19.4 [3.2, 106.9] mg/100g; Iron = 0.636 [0.166, 1.913] mg/100g; Protein = 19.3 [17.2, 21.4] %; Omega3 = 0.101 [0.042, 0.245] g/100g; Selenium = 64.4 [18.5, 200.7] μg/100g; VitaminA = 13.4 [4.4, 42.6] μg/100g; Zinc = 0.614 [0.292, 1.120] mg/100g (wet weight);