Elasmobranchii (tubarões e raias) (sharks and rays) >
Torpediniformes (Electric rays) >
Narcinidae (Numbfishes)
Etymology: Narcine: Greek, narke = numbness (Ref. 45335).
Eponymy: Ignacio Riera Julia was Chief of the Spanish Fisheries Office and adviser to the General Direction of International Fisheries Relations, Ministry of Agriculture and Fisheries, Mahé, Seychelles (1989). He was a good friend of the senior author Lloris. (Ref. 128868), visit book page.
Meio ambiente: milieu / Zona climática / intervalo de profundidade / faixa de distribuição
Ecologia
marinhas batidemersal; intervalo de profundidade 170 - 500 m (Ref. 114953). Deep-water; 2°N - 20°S, 35°E - 48°E (Ref. 114953)
Western Indian Ocean: central Somalia to at least Mozambique.
Tamanho / Peso / Idade
Maturidade: Lm ?  range ? - ? cm
Max length : 30.1 cm TL macho/indeterminado; (Ref. 11228)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Shovel-shaped disc with a long tail (much longer than disc length); a longer-than-wide nasal curtain; slender tooth bands that are subtriangular in shape (Ref. 49866). Uniform light brown or golden-brown dorsally (Ref. 49866).
Body shape (shape guide): other.
Known based on 11 specimens. Males mature at 26 cm TL; born at ca. 9 cm TL. Low fecundity based on two mid-term embryos (each just over 7 cm) found in right uterus of large female (Ref. 114953).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Heemstra, P.C., 1995. Additions and corrections for the 1995 impression. p. v-xv. In M.M. Smith and P.C. Heemstra (eds.) Revised Edition of Smiths' Sea Fishes. Springer-Verlag, Berlin. (Ref. 11228)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2025-2 (Global))
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
Baixar XML
Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (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). |
Nível Trófico (Ref. 69278) |
3.1 ±0.3 se; based on size and trophs of closest relatives |
Resiliência (Ref. 120179) |
Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (Assuming fecundity<100). |
Vulnerabilidade da pesca (Ref. 59153) |
Low vulnerability (21 of 100). 🛈 |