Sphyrna lewini, Scalloped hammerhead : fisheries, gamefish

Sphyrna lewini (Griffith & Smith, 1834)

Scalloped hammerhead
Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Sphyrna lewini   AquaMaps   Data sources: GBIF OBIS
Upload your photos and videos
Pictures | Videos |     Stamps, Coins Misc. | Google image
Image of Sphyrna lewini (Scalloped hammerhead)
Sphyrna lewini
Picture by Randall, J.E.

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranquios (tiburones y rayas) (sharks and rays) > Carcharhiniformes (Ground sharks) > Sphyrnidae (Hammerhead, bonnethead, or scoophead sharks)
Etymology: Sphyrna: Greek, sphyra = hammer (Ref. 45335).

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

; marino; salobre; oceanodromo (Ref. 51243); rango de profundidad 0 - 1000 m (Ref. 89972), usually 0 - 25 m (Ref. 26999).   Tropical; 46°N - 35°S, 180°W - 180°E

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | 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 / Tamaño / Peso / Age

Maturity: Lm 225.0, range 140 - 273 cm
Max length : 430 cm TL macho / no sexado; (Ref. 26938); common length : 360 cm TL macho / no sexado; (Ref. 13562); peso máximo publicado: 152.4 kg (Ref. 40637); edad máxima reportada: 35 años (Ref. 31395)

Short description Morfología | Morfometría

Espinas dorsales (total): 0; Radios blandos dorsales (total): 0; Espinas anales 0; Radios blandos anales: 0. This hammerhead shark is distinguished by having the following characters: large, moderately slender body; broad, narrow bladed head, arched anterior margin with prominent median indentation and lateral indentation; nostrils with strong prenarial grooves; hind margins of eyes slightly posterior to or nearly opposite front of mouth; teeth triangular, deeply notched posteriorly, with smooth or finely serrated edges; first dorsal fin moderately high, second dorsal and pectoral fins low; upper precaudal pit transverse crescentric. Colour of body light grey or greyish brown above, shading to white below, pectoral fin tips dusky and a dark blotch on lower caudal fin lobe (Ref. 13562, 114967).

Biología     Glosario (por ej. 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 Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

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).

Main reference Upload your references | Referencias | Coordinador : Compagno, Leonard J.V. | Colaboradores

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. 120744)

  Vulnerable, ver lista roja de la UICN (VU) (A4bd); Date assessed: 20 February 2007

CITES (Ref. 118484)


Threat to humans

Other (Ref. 13562)





Human uses

Pesquerías: comercial; pesca deportiva: si
FAO(pesquerías: producción, species profile; publication : search) | FIRMS (Stock assessments) | FishSource | Sea Around Us

Más información

Nombres comunes
Sinónimos
Metabolismo
Despredadores
Ecotoxicología
Reproducción
Madurez
Puesta
Agregación para la puesta
Fecundidad
Huevos
Egg development
Age/Size
Crecimiento
Length-weight
Length-length
Length-frequencies
Morfometría
Morfología
Larva
Dinámica larvaria
Reclutamiento
Abundancia
Referencias
Acuicultura
Perfil de acuicultura
Razas
Genética
Frecuencias de alelos
heritabilidad
Enfermedades
Procesamiento
Mass conversion
Colaboradores
Imágenes
Stamps, Coins Misc.
Sonidos
Ciguatera
Velocidad
Tipo de natación
Superficie branquial
Otolitos
Cerebros
Visión

Herramientas

Special reports

Download XML

Fuentes de Internet

Estimates based on models

Preferred temperature (Ref. 115969): 18.7 - 29, mean 27.2 (based on 2890 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5029   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00278 - 0.00453), b=3.11 (3.04 - 3.18), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Nivel trófico (Ref. 69278):  4.1   ±0.5 se; Based on diet studies.
Resiliencia (Ref. 120179):  Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (rm=0.028; K=0.05-0.24; tm=3-15; tmax=41.6; Fec=13-23).
Prior r = 0.06, 95% CL = 0.04 - 0.10, Based on 2 stock assessments.
Vulnerability (Ref. 59153):  Very high vulnerability (81 of 100) .
Price category (Ref. 80766):   Medium.