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Élasmobranches (requins et raies) (sharks and rays) > Torpediniformes (Electric rays) > Narcinidae (Numbfishes)
Etymology: Narcine: Greek, narke = numbness (Ref. 45335).
Eponymy: Dr Edward Nathaniel Bancroft (1772–1842) was a British surgeon at St Georges, London (1805–1811). [...] (Ref. 128868), visit book page.

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

marin démersal; profondeur ? - 35 m (Ref. 114953). Tropical; 35°N - 10°N, 97°W - 60°W (Ref. 114953)

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

Western Atlantic: North Carolina to northeastern Brazil, including the Gulf of Mexico, Caribbean Sean and the islands of the West Indies. Not in Compagno's 1999 checklist (Ref. 35766). Reported in Brazil (Ref. 53431).

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 65.0 cm TL mâle / non sexé; (Ref. 114953)

A benthic species on continental and insular shelves. Mainly feeds on invertebrates suction-fed off the bottom. Produces up to 16 embryos during each gestation. Maturity size of males at ca. 23 cm TL; birth size observed to be ca. 9 cm TL (Ref. 114953).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur : Carvalho, Marcelo | Collaborateurs

de Carvalho, M.R., 1999. Systematic revision of the electric ray genus Narcine Henle, 1834 (Chondrichthyes: Torpediniformes: Narcinidae), and the higher-level phylogenetic relationships of the orders of elasmobranch fishes (Chondrichthyes). Unpublished Ph.D. thesis, the City University of New York. (Ref. 31157)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-1)

Préoccupation mineure (LC) ; Date assessed: 23 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01175 (0.00470 - 0.02937), b=2.88 (2.66 - 3.10), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Niveau trophique (Ref. 69278): 3.1 ±0.3 se; based on size and trophs of closest relatives

Résilience (Ref. 120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Assuming fecundity<100).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (46 of 100).

Narcine bancroftii (Griffith & Smith, 1834)