Пластиножаберные (акулы и скаты) (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); signatus: Latin for marked, probably referring to indentation on outer margins of upper teeth (described from jaws only) (See ETYFish).
More on author: Poey.
Environment: milieu / climate zone / пределы глубины / distribution range
экология
морской донно-пелагический; пределы глубины 0 - 600 m (Ref. 244), usually 50 - 100 m (Ref. 244). Subtropical; 11°C - 16°C (Ref. 244); 39°N - 43°S, 98°W - 15°E (Ref. 55190)
Western Atlantic: Delaware to Florida (USA), Bahamas, and Cuba; southern Brazil, Argentina (Ref. 244). Eastern Atlantic: Senegal to Côte d'Ivoire, Ghana to Cameroon, Democratic Republic of the Congo, Angola, off northern Namibia (Ref. 244, 5578).
Length at first maturity / Size / Вес / Возраст
половая зрелость: Lm 202.5, range 150 - 205 cm
Max length : 280 cm TL самец/пол неопределен; (Ref. 244); common length : 200 cm TL самец/пол неопределен; (Ref. 26999); наибольший вес (опубликованные данные): 76.7 kg (Ref. 40637)
колючие лучи спинного плавника (общее число) : 0; колючие лучи анального плавника: 0. A slim shark with a very long, pointed snout, large eyes, and small jaws with oblique-cusped serrated upper teeth; dorsal fins low with elongated rear tips; interdorsal ridge present (Ref. 5578). Grey-brown above, white below; no conspicuous fin markings (Ref. 5578).
Body shape (shape guide): fusiform / normal.
Coastal and semi-oceanic species found on or along outer continental and insular shelves (Ref. 244). Found to depths of 40 m (Ref. 26938). Forms schools (Ref. 244). Nocturnal (Ref. 5578), and feeding mainly on small bony fishes and squid (Ref. 244). Viviparous (Ref. 50449). Off West Africa, recorded water parameters at 90 to 285 m, where it was caught includes: temperature = 11 to 16°C; salinity = 36 ppt; oxygen = 1.81 ml/l (Ref. 244). Not known to be dangerous to people (Ref. 244).
Viviparous, placental (Ref. 50449), with 4 to 12 young in a litter (Ref. 244). Size at birth about 60 cm (Ref. 244). 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)
Статус Красного Списка МСОП (Ref. 130435: Version 2025-1)
Использование человеком
рыболовство: коммерческий; объект спортивного рыболовства: да
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Estimates based on models
Preferred temperature (ссылка
123201): 15.8 - 27, mean 21.7 °C (based on 178 cells).
Phylogenetic diversity index (ссылка
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00468 (0.00303 - 0.00722), b=3.07 (2.95 - 3.19), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (ссылка
69278): 4.6 ±0.0 se; based on diet studies.
устойчивость к внешним воздействиям (ссылка
120179): очень низкий, минимальное время удвоения популяции более 14 лет (tm=8-10; Fec=4; Tmax=17; K=0.12).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (73 of 100).
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