इलाज़मौबरांकी (शारक और रेज़) (sharks and rays) >
Myliobatiformes (Stingrays) >
Dasyatidae (Stingrays) > Urogymninae
Etymology: Urogymnus: Greek, oura = tail + Greek, gymnos = naked (Ref. 45335).
More on authors: Bloch & Schneider.
Taxonomic Remarks
Urogymnus africanus and Urogymnus asperrimus are considered synonyms and both are originally described in the same work. There is uncertainty about which name has priority, and thus both names can be found as valid; the first reviser is not researched (Eschmeyer, 2014).
पर्यावरण: पर्यावरण / जलवायु क्षेत्र / गहराई सीमा / वितरण सीमा
पारिस्थितिकी
समुद्री; खारा प्रवाल-भित्ति संयुक्त; गहराई सीमा 15 - 217 m (Ref. 86942). Tropical; 31°N - 31°S, 20°W - 177°W
Eastern Central Atlantic: Senegal, Guinea, and Côte d'Ivoire (Ref. 4438). Indo-Pacific: Red Sea and coast of East Africa to the Marshall Islands and Fiji, south to northern Australia (Ref. 2334).
प्रथम परिपक्वता पर लंबाई / आकार / वज़न / आयु
परिपक्व अवधि: Lm ?, range 100 - ? cm
Max length : 147 cm WD पुल्लिंग / अलिंग; (Ref. 58048)
Diagnosis: A heavily armored stingray lacking a venomous barb; young with large, flat denticles on upper surface, and large juveniles and adults with additional sharp conical thorns and small, pointed denticles (Ref. 5578).
Body shape (shape guide): other.
Inhabits the continental shelf area (Ref. 2334), but capable of entering coastal lagoons (Ref. 81259). Found on sand and coral rubble areas near reefs (Ref. 9840), often in caves. Ovoviviparous (Ref. 50449). Due to its difficult handling, it is probably of limited commercial value (Ref. 9840). Its thorn can inflict a painful injury; caught commonly by demersal tangle net fisheries; utilized for its meat, skin (very high value) and cartilage (Ref.58048).
जीवन चक्र और संभोग व्यवहार
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | उपजाऊपन | लार्वा
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Distinct pairing with embrace (Ref. 205). Distinct pairing with embrace (Ref. 205).
Randall, J.E., G.R. Allen and R.C. Steene, 1990. Fishes of the Great Barrier Reef and Coral Sea. University of Hawaii Press, Honolulu, Hawaii. 506 p. (Ref. 2334)
आईयूसीएन रेड लिस्ट स्थिति (Ref. 130435: Version 2025-2 (Global))
मनुष्यों के लिए ख़तरा
Traumatogenic (Ref. 2334)
मानव उपयोग
मात्स्यिकी: व्यापारिक
साधन
विशेष रिपोर्ट
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इंटरनेट स्रोत
मॉडल पर आधारित अनुमान
जातिवृति विविधता सूचकांक (संदर्भ 82804) |
PD50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01023 (0.00486 - 0.02155), b=3.06 (2.86 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
ट्रॉफिक स्तर (संदर्भ 69278) |
3.5 ±0.46 se; based on food items. |
लौटाव (संदर्भ 120179) |
निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (Assuming fecundity<100). |
मछली पकड़ने की भेद्यता (Ref. 59153) |
Very high vulnerability (90 of 100). 🛈 |
मूल्य श्रेणी (Ref. 80766) |
Low.
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पोषक तत्व (Ref. 124155) |
Calcium = 5.12 [0.57, 77.92] mg/100g; Iron = 0.354 [0.028, 3.818] mg/100g; Protein = 21.4 [18.7, 24.1] %; Omega3 = 0.0888 [, ] g/100g; Selenium = 41.6 [7.4, 202.0] μg/100g; VitaminA = 20.7 [1.8, 237.0] μg/100g; Zinc = 0.791 [0.052, 9.041] mg/100g (wet weight); |