Brazil country information

Common names: Cação-cornudo, Cação-martelo, Cação-rudela
Occurrence: native
Salinity: brackish
Abundance: occasional (usually not seen) | Ref: Feitoza, B.M., R.S. Rosa and L.A. Rocha, 2005
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Uncommon. Also Ref. 27549.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., 1984
National Database:

Common names from other countries

Requin-marteau halicorne, Cornuda común, Bronze hammerhead shark, ... more

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (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); lewini: Patronym not identified, perhaps in honor of John Lewin (1770-1819), who illustrated early volumes of Australian natural history (this shark was described from Australia) and may be the “Mr. Lewin” who illustrated the plates in Griffith and Smith’s book. (See ETYFish).

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

marien; brak water; oceanodroom (Ref. 51243); diepte 0 - 1043 m (Ref. 89972), usually 0 - 25 m (Ref. 26999). Tropical; 46°N - 39°S, 180°W - 180°E

Verspreiding Landen | FAO regio's | Ecosystemen | Voorkomen | Point map | Introducties | 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.

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: L_m 210.5, range 140 - 273 cm
Max length : 430 cm TL mannelijk / geslacht onbekend; (Ref. 26938); common length : 360 cm TL mannelijk / geslacht onbekend; (Ref. 13562); max. gepubliceerd gewicht: 152.4 kg (Ref. 40637); max. gerapporteerde leeftijd: 35 Jaren (Ref. 31395)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 0; Anale stekels: 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).

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). Maximum depth from Ref. 125614.

Levenscyclus en paargedrag Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven

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).

Hoofdreferentie Upload your references | Referenties | Coördinator : Compagno, Leonard J.V. | Medewerkers

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)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Ernstig bedreigd (CR) (A2bd); Date assessed: 08 November 2018

CITES (Ref. 128078)

Appendix II: International trade monitored

CMS (Ref. 116361)

Appendix II: Migratory species conserved through agreements

Gevaar voor de mens

Other (Ref. 13562)

Gebruik door de mens

Visserij: commercieel; sportvis: ja

FAO(visserij: productie, soortsprofiel; publication : search) | FIRMS (Stock assessments) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 18.7 - 29, mean 27.2 (based on 2890 cells).

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 0.5029 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00355 (0.00281 - 0.00449), b=3.10 (3.03 - 3.17), in cm Total Length, based on LWR estimates for this species (Ref. 93245).

Trofisch niveau (Ref. 69278): 4.1 ±0.5 se; based on diet studies.

Weerstandsvermogen (Ref. 120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (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 - 0.09, Based on 2 data-limited stock assessments.

Fishing Vulnerability (Ref. 59153): Very high vulnerability (78 of 100).

Climate Vulnerability (Ref. 125649): High vulnerability (62 of 100).

Prijsklasse (Ref. 80766): Medium.

Sphyrna lewini (Griffith & Smith, 1834)