Elasmobranquios (tiburones y rayas) (sharks and rays) >
Torpediniformes (Electric rays) >
Narcinidae (Numbfishes)
Etymology: Benthobatis: Greek, benthos = depth of the sea + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335); marcida: From its loose skin and soft aspect ['marcidus' = withered or wasted].
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
marino batidemersal; rango de profundidad 200 - 923 m (Ref. 48493). Deep-water; 34°N - 21°N, 82°W - 74°W (Ref. 114953)
Western Central Atlantic. South Carolina, USA to northern Cuba.
Tamaño / Peso / Edad
Madurez: Lm ? range ? - ? cm
Max length : 50.0 cm WD macho / no sexado; (Ref. 26340)
Narrow protractile mouth. Caudal is oval shape. Greater length of head anterior to spiracles, union of margins of its pelvic fins to their tips with the sides of the tail. Soft body and skin (Ref. 6902). Light brown to yellowish-brown dorsal color pattern; white to yellowish-white ventral color pattern, sometimes with distinct yellow markings on posterior ventral disc surface, ventral pelvic fin area, and around mouth. Caudal fin length much less than 1/2 length of tail, roughly equal to 1/5 length of tail; relatively more pronounced upper and lower lobes with lower strongly convex. Distance between dorsal and caudal fins about equal to distance between first and second dorsal fins. Snout relatively short, generally less than 1/3 in disc-length (24% of disc length in 43.5 cm TL female, 25% in 48.5 cm TL), but never much greater than 1/3 as in B. moresbyi (ca 40% in lectotype); disc more rounded, not as elongated as in B. moresbyi (Ref. 48493).
Body shape (shape guide): other.
Inhabits neritic waters, on sandy bottoms (Ref. 557). Found on continental and insular slopes at 250-1,000 m depths; adults apparently at greatest depths (Ref. 114953). Solitary. Tiny eyes are covered with skin so that the species is blind (Ref. 557). Feeds on marine invertebrates. Both ovaries are functional in an adult female, with numerous small oocytes of ca. 2 mm in thin-walled uteri. Maturity size of males at ca. 16 cm TL; birth size at 8-9 cm TL (Ref. 114953).
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Claro, R., 1994. Características generales de la ictiofauna. p. 55-70. In R. Claro (ed.) Ecología de los peces marinos de Cuba. Instituto de Oceanología Academia de Ciencias de Cuba and Centro de Investigaciones de Quintana Roo. (Ref. 26340)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Usos humanos
Pesquerías: sin interés
Herramientas
Informes especiales
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Fuentes de Internet
Estimaciones basadas en modelos
Temperatura preferida (Referencia
123201): 8.8 - 18.2, mean 13 °C (based on 77 cells).
Índice de diversidad filogenética (Referencia
82804): PD
50 = 0.5625 [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).
Nivel trófico (Referencia
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resiliencia (Referencia
120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Assuming fecundity<100).
Vulnerabilidad pesquera (Ref.
59153): Low vulnerability (20 of 100).
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