इलाज़मौबरांकी (शारक और रेज़) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks) >
Oxynotidae (Rough sharks)
Etymology: Oxynotus: oxys (Gr.), sharp; notos (Gr.), back, referring to its keeled back (“dorso carenato”) (See ETYFish); centrina: From “Centrina,” name for this shark dating to at least Giovio’s De romanis piscibus (1524), presumably derived from centrum (L.), prickle or sharp point, referring to spines on both dorsal fins (See ETYFish).
More on author: Linnaeus.
पर्यावरण: पर्यावरण / जलवायु क्षेत्र / गहराई सीमा / वितरण सीमा
पारिस्थितिकी
समुद्री बाथीड़िमरसल; गहराई सीमा 60 - 1309 m (Ref. 128029). Deep-water; 70°N - 17°S, 25°W - 36°E (Ref. 54693)
Eastern Atlantic: Bay of Biscay and Mediterranean Sea to Senegal, north to Cornwall, England (apparently as a stray). Compagno et al. (Ref. 5578) reports this species as ranging south to Cape Point, South Africa but Springer 1990 (Ref. 10718) notes Bass et al. 1976 as considering specimens from Walvis Bay distinct from Oxynotus centrina calling attention to the considerably greater distance between dorsal fins in Mediterranean specimens than in specimens taken south of the equator.
प्रथम परिपक्वता पर लंबाई / आकार / वज़न / आयु
परिपक्व अवधि: Lm ?, range 50 - ? cm
Max length : 150 cm TL पुल्लिंग / अलिंग; (Ref. 247); common length : 55.0 cm TL पुल्लिंग / अलिंग; (Ref. 26999)
पृष्ठीय रीढ़ (सम्पूर्ण) : 2; गुदा कांटा: 0. A small bizarre-looking shark with an unmistakable high body and bristly textured skin (Ref. 5578). Uniformly grey to grey-brown (Ref. 5578).
Body shape (shape guide): elongated.
Found on the outer continental shelf and upper slope (Ref. 5578). Depth range from 60-660 m (Ref. 247) and from 549-777 m in the eastern Ionian Sea (Ref. 56504), and 818-1309 m NW Africa (Ref. 128029). Feeds on polychaetes (Ref. 247) and sipunculids (apparenly a suction feeder which mainly feeds on worm-like prey), which are rapidly digested, and the rapid gastric evacuation could partially explain the vacuity of several guts; teleosts, crustaceans and echinoderms are considered as accessory prey items, thus recorded predation on egg cases of the smallspotted catshark Scyliorhinus canicula remains an occasional phenomenon (Ref. 81816). Ovoviviparous (Ref. 205). Utilized for fishmeal, oil, and smoked and dried salted for human consumption (Ref. 247).
जीवन चक्र और संभोग व्यवहार
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | उपजाऊपन | लार्वा
Ovoviviparous, without a placenta, with about 7 or 8 young in a litter (Ref. 247). 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 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
आईयूसीएन रेड लिस्ट स्थिति (Ref. 130435: Version 2025-2 (Global))
मनुष्यों के लिए ख़तरा
Harmless
मानव उपयोग
मात्स्यिकी: लघु वाणिज्य
साधन
विशेष रिपोर्ट
XML डाउनलोड करें
इंटरनेट स्रोत
मॉडल पर आधारित अनुमान
पसंदीदा तापमान (संदर्भ
123201): 9.5 - 15.3, mean 13.3 °C (based on 283 cells).
जातिवृति विविधता सूचकांक (संदर्भ
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00158 - 0.00837), b=3.15 (2.94 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ट्रॉफिक स्तर (संदर्भ
69278): 3.1 ±0.3 se; based on diet studies.
लौटाव (संदर्भ
120179): बहुत नीचे, न्यूनतम जनसंख्या दुगनी समय अवलागत 14 महीने। (Fec=7).
मछली पकड़ने की भेद्यता (Ref.
59153): Very high vulnerability (90 of 100).
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जलवायु भेद्यता (Ref.
125649): Moderate vulnerability (38 of 100).
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पोषक तत्व (Ref.
124155): Calcium = 5.91 [1.03, 31.36] mg/100g; Iron = 0.271 [0.065, 0.929] mg/100g; Protein = 18.7 [16.8, 20.5] %; Omega3 = 0.229 [0.074, 0.746] g/100g; Selenium = 18.8 [5.3, 65.9] μg/100g; VitaminA = 5.9 [1.1, 30.1] μg/100g; Zinc = 0.392 [0.185, 0.747] mg/100g (wet weight);