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Пластиножаберные (акулы и скаты) (sharks and rays) > Carcharhiniformes (Ground sharks) > Sphyrnidae (Hammerhead, bonnethead, or scoophead sharks)
Etymology: Sphyrna:Probable misspelling of sphyra (Gr.), hammer, referring to their hammer-shaped heads (See ETYFish); zygaena:zygaina, ancient Greek name for hammerhead sharks, derived from zygon, yoke, alluding to yoke-like shape of cephalofoil (See ETYFish). More on author: Linnaeus.
Окружающая среда: среда / климатическая зона / пределы глубины / диапазон распространения экология
морской; солоноватоводный pelagic-oceanic; мигрирует в океане (Ref. 13562); пределы глубины 0 - 200 m (Ref. 5578), usually 0 - 20 m (Ref. 55303). Subtropical; 59°N - 55°S, 180°W - 180°E
Длина при первой зрелости / Размер / Вес / Возраст
половая зрелость: Lm250.0, range 265 - ? cm Max length : 500 cm TL самец/пол неопределен; (Ref. 35388); common length : 335 cm TL самец/пол неопределен; (Ref. 13562); наибольший вес (опубликованные данные): 400.0 kg (Ref. 9987); наибольший возраст (опубликованны данные): 21 годы (Ref. 116211)
колючие лучи спинного плавника (общее число) : 0; колючие лучи анального плавника: 0. A large hammerhead without a notch at the center of the curved headhead (Ref. 58085); but with prominent lateral indentations; prenarial grooves well-developed; snout short, 1/5 to less than a third of head width; mouth broadly arched (Ref. 114967); the first dorsal fin is moderately high, the second dorsal and pelvic fins are low. Colour olive-grey or dark grey above, white below, and the undersides of the pectoral fin tips dusky (Ref. 58085). Body shape (shape guide): elongated; Cross section: angular.
Occurs inshore and well offshore (Ref. 5578), over continental and insular shelves (Ref. 244). Coastal, pelagic, and semi-oceanic, but often bottom associated at 1-139 m (Ref. 58302). Migrates northward in summer; young often in large aggregations of hundreds of individuals (Ref. 13562). Prefers to feed on small sharks, skates and stingrays, but also preys on bony fishes, shrimps, crabs, barnacles and cephalopods (Ref. 244). Viviparous (Ref. 50449). Regarded as being dangerous to people, though only few can be tentatively attributed to this species due to its occurrence in temperate waters (Ref. 244). Reported to cause poisoning (Ref. 4690). Caught occasionally by shark and tuna longline fisheries (Ref.58048). Meat utilized fresh, dried-salted, and possibly smoked for human consumption; liver oil for vitamins, fins for soup, hide for leather, and carcasses for fishmeal (Ref. 244). Used in Chinese medicine (Ref. 12166). Become sexually mature when 250 to 300 cm long. The female gives birth to 30 - 40 young (Ref. 35388).
Viviparous, placental (Ref. 50449), with 20 to 50 young per litter (Ref. 6871)after a gestation period of 10-11 months (Ref.58048). Size at birth between 50-60 cm TL (Ref. 13562).
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 2025-2 (Global))
Уязвимые (VU) (A2bd); Date assessed: 08 November 2018
Физиология Состав тела Питательные вещества Потребление кислорода Тип плавания Скорость плавания Зрительные пигменты Звук рыбы Болезни и паразиты Токсичность (LC50s)
