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Sphyrna lewini  (Griffith & Smith, 1834)

Scalloped hammerhead
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Sphyrna lewini   AquaMaps   Data sources: GBIF OBIS
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Image of Sphyrna lewini (Scalloped hammerhead)
Sphyrna lewini
Picture by Randall, J.E.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) > Carcharhiniformes (Ground sharks) > Sphyrnidae (Hammerhead, bonnethead, or scoophead sharks)
Etymology: Sphyrna: Greek, sphyra = hammer (Ref. 45335).

环境 / 气候 / 范围 生态学

; 海洋; 半咸淡水; 海洋洄游的 (Ref. 51243); 深度上下限 0 - 1000 m (Ref. 89972), usually 0 - 25 m (Ref. 26999).    , preferred 26°C (Ref. 107945); 46°N - 31°S, 180°W - 180°E

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

Circumglobal in coastal warm temperate and tropical seas (Ref. 13562). Western Atlantic: New Jersey, USA to Uruguay (Ref. 58839), including the Gulf of Mexico and Caribbean. Eastern Atlantic: western Mediterranean (Ref. 6678) to Namibia (Ref. 6812). Indo-Pacific: Persian Gulf (Ref. 68964), Red Sea, East Africa and throughout the Indian Ocean; Japan to New Caledonia, Hawaii and Tahiti. Eastern Pacific: southern California, USA to Ecuador, probably Peru.

Length at first maturity / 大小 / 重量 / 年龄

Maturity: Lm 225.0, range 200 - 273 cm
Max length : 430 cm TL 雄鱼/尚未辨别雌雄; (Ref. 26938); common length : 360 cm TL 雄鱼/尚未辨别雌雄; (Ref. 13562); 最大体重: 152.4 kg (Ref. 40637); 最大年龄: 35 年 (Ref. 31395)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 0; 背的软条 (总数): 0; 臀棘 0; 臀鳍软条: 0. A large hammerhead with a notch at the center of head; 1st dorsal fin moderately high, 2nd dorsal and pelvic fins low (Ref. 5578). Front margin of head broadly arched with prominent median notch. Side wings of head narrow, rear margins swept backward (Ref. 26938). Uniform grey, grayish brown, or olivaceous above, shading to white below; pectoral fins tipped with grey or black ventrally (Ref. 13562).

生物学特性     字汇 (例如 epibenthic)

A coastal-pelagic, semi-oceanic shark occurring over continental and insular shelves and adjacent deep water, often approaching close inshore and entering enclosed bays and estuaries (Ref. 244, 11230, 58302). Found in inshore and offshore waters to about 275 m depth (Ref. 26938, 11230, 58302); has been filmed at a baited camera in 512 m depth (Lis Maclaren, pers. comm. 2005). Huge schools of small migrating individuals move pole ward in the summer in certain areas (Ref. 244). Permanent resident populations also exist (Ref. 244). Juveniles occur in coastal areas (Ref. 58784). Adults solitary, in pairs, or schools; young in large schools (Ref. 13562). Feed mainly on teleost fishes and cephalopods (Ref. 6871), also lobsters, shrimps, crabs (Ref. 30573), including other sharks and rays (Ref. 37816). Viviparous (Ref. 50449). Mature females produce 15-31, of 43-55 cm young in a litter (Ref. 26938, 1602). Considered potentially dangerous to people but often not aggressive when approached by divers (Ref. 13562). Readily available to inshore artisanal and small commercial fisheries as well as to offshore operations (Ref. 13562). Sold fresh, dried-salted, smoked and frozen; also sought for its fins and hides (Ref. 9987). Oil used for vitamins and carcasses for fishmeal (Ref. 13562).

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼

Viviparous, placental (Ref. 50449), with 13-23 in a litter (Ref. 6871); 12-41 pups after a gestation period of 9-10 months (Ref.58048). Size at birth 45-50 cm TL (Ref. 13562); 39-57 cm TL (Ref.58048).

主要参考文献 Upload your references | 参考文献 | 合作者 : Compagno, Leonard J.V. | 合作者

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)

世界自然保护联盟红皮书 (Ref. 115185)

  濒危 (EN) (A2bd+4bd)

CITES (Ref. 94142)

对人类的威胁

(Ref. 13562)




人类利用

渔业: 商业性; 游钓鱼种: 是的
FAO(渔业: 产生, 物种外形; publication : search) | FIRMS (Stock assessments) | FisheriesWiki | 周边海洋

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