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Sphyrna zygaena (Linnaeus, 1758)

Smooth hammerhead
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Sphyrna zygaena   AquaMaps   Data sources: GBIF OBIS
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Klassifizierung / Names Namen | Synonyme | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (Haie und Rochen) (sharks and rays) > Carcharhiniformes (Ground sharks) > Sphyrnidae (Hammerhead, bonnethead, or scoophead sharks)
Etymology: Sphyrna: Greek, sphyra = hammer (Ref. 45335).  More on author: Linnaeus.

Environment: milieu / climate zone / depth range / distribution range Ökologie

; seewasser; brackwasser; ozeanodrom (Ref. 13562); tiefenbereich 0 - 200 m (Ref. 5578), usually 0 - 20 m (Ref. 55303).   Subtropical; 59°N - 55°S, 180°W - 180°E

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Widespread in temperate and tropical seas (Ref. 13562). Western Atlantic: Canada to the Virgin Islands; Brazil to Argentina. Eastern Atlantic: British Isles to Côte d'Ivoire, including the Mediterranean. Indo-Pacific: South Africa to Sri Lanka; southern Siberia to Viet Nam (Ref. 13562); southern Australia, New Zealand, and Hawaii (Ref. 13562). Eastern Pacific: northern California, USA to Chile.

Length at first maturity / Size / Gewicht / Alter

Maturity: Lm 265.0, range 265 - ? cm
Max length : 500 cm TL Männchen/unbestimmt; (Ref. 35388); common length : 335 cm TL Männchen/unbestimmt; (Ref. 13562); max. veröff. Gewicht: 400.0 kg (Ref. 9987); max. veröff. Alter: 21 Jahre (Ref. 116211)

Kurzbeschreibung Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt): 0; Rückenflossenweichstrahlen (insgesamt): 0; Afterflossenstacheln 0; Afterflossenweichstrahlen: 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). Olive-grey or dark grey above, white below (Ref. 5578). Fins nearly plain, dusky or blackish tipped (Ref. 13562).

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

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).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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).

Hauptreferenz Upload your references | Referenzen | Koordinator : Compagno, Leonard J.V. | Partner

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 Rote Liste Status (Ref. 120744)

  gefährdet, siehe IUCN Red List (VU) (A2bd+3bd+4bd); Date assessed: 01 October 2005

CITES (Ref. 118484)


CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Traumatogenic (Ref. 244)





Nutzung durch Menschen

Fischereien: kommerziell; Sportfisch: ja
FAO(Fischereien: production; publication : search) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 11.8 - 28.9, mean 26.5 (based on 3124 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5029   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00417 (0.00257 - 0.00676), b=3.03 (2.89 - 3.17), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic Level (Ref. 69278):  4.9   ±0.5 se; Based on diet studies.
Widerstandsfähigkeit (Ref. 120179):  niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (tmax=21; tm=8.8; Fec=20-40).
Prior r = 0.28, 95% CL = 0.16 - 0.49, Based on 1 stock assessment.
Verwundbarkeit (Ref. 59153):  Very high vulnerability (85 of 100) .
Preiskategorie (Ref. 80766):   Low.