Elasmobranquios (tiburones y rayas) (sharks and rays) >
Torpediniformes (Electric rays) >
Narcinidae (Numbfishes)
Etymology: Narcine: Greek, narke = numbness (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecología
marino demersal; rango de profundidad ? - 35 m (Ref. 114953). Tropical; 35°N - 10°N, 97°W - 60°W (Ref. 114953)
Distribución
Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | 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).
Tamaño / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 65.0 cm TL macho / no sexado; (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
Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva
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 Unpublished Ph.D. thesis, the City University of New York.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)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00476 - 0.02897), b=2.88 (2.66 - 3.10), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nivel trófico (Ref.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
Resiliencia (Ref.
120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (46 of 100).