أشلاق (القروش و الشفانين) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Carcharhinidae (Requiem sharks)
Etymology: Carcharhinus: karcharos (Gr.), sharp or jagged; rhinus, an ancient name for sharks, from rhine (Gr.), rasp, both words alluding to a shark's jagged, rasp-like skin. (See ETYFish); perezii: In honor of Poey’s companion and friend Laureano Perez Arcas (1824-1894), University of Madrid, whose textbook Elementos de Zoología Poey used at the University of Havana. (See ETYFish).
More on author: Poey.
Environment: milieu / climate zone / depth range / distribution range
البيئة
بحري مرتبطة بالشعاب; نطاق العمق 1 - 65 m (Ref. 9710), usually 1 - 35 m (Ref. 40849). Subtropical; 33°N - 35°S, 100°W - 33°W (Ref. 55187)
Western Atlantic: Florida, USA to southern Brazil, including the northern Gulf of Mexico and the Antilles.
Length at first maturity / الحجم / وزن / العمر
Maturity: Lm 160.0, range 152 - 168 cm
Max length : 300 cm TL ذكر/ مختلط الجنس; (Ref. 9710); 295.0 cm TL (female); أعلا وزن تم نشرة: 69.9 kg (Ref. 40637)
A large, gray shark with an interdorsal ridge and short blunt snout. 1st dorsal fin small with short rear tip (Ref. 26938).
Found on continental and insular shelves, often near drop-offs on the outer edges of reefs. May rest on the bottom (Ref. 9710). Usually found in reefs, at less than 30 m deep (Ref 26938). Feed on bony fishes, including bigeyes (Priacanthidae). Viviparous (Ref. 50449). Size at birth below 73 cm. A dangerous species implicated in an abortive attack on divers in the Caribbean. Meat is prepared dried salted for human consumption, hides for leather, liver for oil, carcasses for fish meal.
Life cycle and mating behavior
Maturities | التكاثر | Spawnings | Egg(s) | Fecundities | Larvae
Distinct pairing with embrace (Ref. 205). Viviparous, placental (Ref. 50449).
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)
IUCN Red List Status (Ref. 130435)
استخدامات بشرية
مصائد: تجاري
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (Ref.
123201): 25.3 - 28, mean 27.2 °C (based on 396 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00221 - 0.01036), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
مستوى غذائي (Ref.
69278): 4.5 ±0.8 se; based on diet studies.
المرونه (Ref.
120179): منخفض, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 4.5-14 سنة (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
Nutrients (Ref.
124155): Calcium = 3.45 [0.66, 18.50] mg/100g; Iron = 0.348 [0.085, 1.010] mg/100g; Protein = 23 [20, 25] %; Omega3 = 0.145 [0.054, 0.363] g/100g; Selenium = 14.6 [4.6, 45.9] μg/100g; VitaminA = 28.1 [9.3, 88.8] μg/100g; Zinc = 0.333 [0.154, 0.655] mg/100g (wet weight);
