Hexanchus griseus, Bluntnose sixgill shark : fisheries, gamefish

Hexanchus griseus (Bonnaterre, 1788)

Bluntnose sixgill shark
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Hexanchus griseus   AquaMaps   Data sources: GBIF OBIS
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Image of Hexanchus griseus (Bluntnose sixgill shark)
Hexanchus griseus
Immagine di Murch, A.

Classificazione / Nomi Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchi (squali e razze) (sharks and rays) > Hexanchiformes (Frill and cow sharks) > Hexanchidae (Cow sharks)
Etymology: Hexanchus: hex (Gr.), six; anchus, etymology unclear, perhaps anchos (Gr.), choke or throttle, referring to how six gill openings of H. griseus extend down onto the throat (See ETYFish)griseus: Medieval Latin for gray, reflecting the French vernacular “Le Griset,” referring to its dark-gray coloration (See ETYFish).
More on author: Bonnaterre.

Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione Ecologia

marino batidemersale; oceanodromo (Ref. 87829); distribuzione batimetrica 0 - 2500 m (Ref. 132203), usually 180 - 1100 m (Ref. 45445). Subtropical; 6°C - 10°C (Ref. 125614); 65°N - 48°S, 180°W - 180°E

Distribuzione Territories | Aree FAO | Ecosistemi | Presenze | Mappa dei ritrovamenti | Introduzioni | Faunafri

Circumglobal with patchy distribution and possibly absent from Arctic and Antarctic. Highly migratory species.

Lunghezza alla prima maturità / Dimensione / Peso / Età

Maturità: Lm 441.0, range 400 - 482 cm
Max length : 600 cm TL maschio/sesso non determinato; (Ref. 124786); common length : 300 cm TL maschio/sesso non determinato; (Ref. 5217); peso massimo pubblicato: 590.0 kg (Ref. 27436)

Breve descrizione Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 0; Spine anali: 0. A heavily-bodied, broad-headed sixgill shark, mouth ventral with 6 rows of lower, bladelike, comb-shaped teeth on each side (Ref. 247). Snout broadly rounded, body fusiform (Ref. 6871). Anal fin smaller than dorsal fin (Ref. 6871). Brown or grey above, paler below, with a light stripe along side (Ref. 26346). Fins with white edges (Ref. 6574). Live specimens with fluorescent green eyes (Ref. 6871). Six gill slits are very long (Ref. 35388).
Body shape (shape guide): elongated.

Biologia     Glossario (es. epibenthic)

Depth range reported at 0m-2500m (Ref. 125614). A deepwater species of the outer continental and insular shelves and upper slopes (Ref. 6871, 75154), islands, seamounts and mid-ocean ridges (Ref. 125614). Near bottom, occasionally pelagic, adults usually below 91 m (Ref. 58302). Juveniles may be found close inshore (Ref. 6871), while nursery areas are in very shallow waters (Ref. 125614). Found on the bottom by day, moving to the surface at night to feed, and where it may take longlines set for other species (Ref. 45445). Depth distribution related to growth and temperature, with juveniles having most shallow records and from colder, poleward regions (Ref. 58302). Generally occurs at a bottom temperature of 6 to 10°C (Ref. 125614). Feeds on a wide range of marine organisms, including other sharks, rays, chimaeras, bony fish, squids, crabs, shrimps, carrion, and even seals (Ref. 26969). Large sharks (at least 2m) take cetaceans and seals. Viviparous, very large litters of 47-108 pups (Ref. 125614). Give birth to almost 100 young (Ref. 35388). Young and adults may be segregated, with the young using inshore nursery grounds. Possibly long-lived (Ref. 125614). Is a eurytrophic predator that is capable of exploiting a wide range of prey species and habitats (Ref. 26969). A vertical migrant, it may sit on the bottom by day, and rise to the surface at night to feed (Ref. 247). It occurs alone or in groups. Adults are more sensitive to light than the juveniles and less seen in clear shallow waters, but more prevalent at night or areas with dense plankton blooms (Ref. 125614). It is locally common in bycatch and target fisheries for food, fishmeal and oil, and in sports fisheries, but vulnerable to overfishing and requires careful management (Ref. 125614). Marketed fresh, frozen, or dried salted (Ref. 247). Not known to have attacked people without provocation (Ref. 247).

Ciclo vitale e comportamento di accoppiamento Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve

Viviparous, very large litters of 47-108 pups (Ref. 125614). Size at birth 60-75 cm (Ref. 26346). Distinct pairing with embrace (Ref. 205).

Riferimento principale Caricare le referenze | Bibliografia | Coordinatore : Compagno, Leonard J.V. | Collaboratori

Ebert, D.A., S. Fowler and M. Dando, 2021. Sharks of the world: A complete guide. Princeton (NJ, USA): Princeton University Press, 607 p. (Ref. 125614)

Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))

  Near Threatened (NT) (A2bd); Date assessed: 21 November 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Minaccia per l'uomo

Other (Ref. 4690)





Usi umani

Pesca: commerciale; Pesce da pesca sportiva: si

Informazioni ulteriori

Ecologia trofica
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Ecologia
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Francobolli, monete, materiale vario.
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Fonti Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Genere, Specie | DiscoverLife | DORIS | ECOTOX | FAO - pesca: profilo della specie, landings search; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | Database Nazionali | OceanAdapt | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, ricerca | World Records Freshwater Fishing | Record zoologico

Stime basate su modelli

Indice di diversità filogenetica
(Fonte Biblio. 82804)
PD50 = 0.6641 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00081 (0.00049 - 0.00134), b=3.23 (3.08 - 3.38), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Livello trofico
(Fonte Biblio. 69278)
4.5   ±0.2 se; based on diet studies.
Resilienza
(Fonte Biblio. 120179)
Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Fec= 22-108).
Vulnerabilità della pesca
(Ref. 59153)
Very high vulnerability (81 of 100). 🛈
Vulnerabilità climatica
(Ref. 125649)
Moderate vulnerability (38 of 100). 🛈
Categoria di prezzo
(Ref. 80766)
Unknown.
Nutrienti
(Ref. 124155)
Calcium = 8.75 [2.27, 47.99] mg/100g; Iron = 0.664 [0.163, 2.072] mg/100g; Protein = 19.5 [17.5, 21.5] %; Omega3 = 0.24 [0.10, 0.59] g/100g; Selenium = 79.6 [24.5, 261.1] μg/100g; VitaminA = 3.68 [0.99, 13.90] μg/100g; Zinc = 0.324 [0.155, 0.615] mg/100g (wet weight);