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Élasmobranches (requins et raies) (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).

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

marin benthopélagique. Tropical; 17°N - 5°S, 19°W - 13°E

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Eastern Atlantic: Senegal to Congo. Not in Compagno's 1999 checklist (Ref. 35766).

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 300 cm TL mâle / non sexé; (Ref. 244)

A coastal-pelagic shark. Feeds on fishes, especially bony fishes, and also benthic and epibenthic cephalopods. Viviparous, with 24 to 28 young in a litter. Size at birth about 30 to 32 cm.

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves

Viviparous, placental (Ref. 50449).

Référence principale Upload your references | Références | Coordinateur : Compagno, Leonard J.V. | Collaborateurs

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)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Non évalué

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Traumatogenic

Utilisations par l'homme

Pêcheries: pêcheries vivrières

FAO - Publication: search | FishSource |

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Trophic ecology
Éléments du régime alimentaire
Diet compositions
Food consumptions
Food rations
Prédateurs

Ecology
Écologie

Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Fréquences de longueurs
Mass conversions
Recruitments
Abundances

Life cycle
Reproduction
Maturities
Fecundities
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Larves
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Distribution
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Anatomy
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Physiology
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Visual pigment(s)
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Diseases / Parasites
Toxicities (LC50s)

Genetics
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Human related
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Estimates based on models

Preferred temperature (Ref. 123201): 24.4 - 28, mean 26.7 °C (based on 64 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5029 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00347 (0.00157 - 0.00767), b=3.12 (2.93 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Niveau trophique (Ref. 69278): 4.5 ±0.54 se; based on food items.

Résilience (Ref. 120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec=24).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (90 of 100).

Catégorie de prix (Ref. 80766): High.

Sphyrna couardi Cadenat, 1951