Elasmobranchi (squali e razze) (sharks and rays) >
Torpediniformes (Electric rays) >
Torpedinidae (Electric rays)
Etymology: Torpedo: Latin, torpere = be sluggish (Ref. 45335); adenensis: Named for its type locality, the Gulf of Aden; an adjective.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino demersale; distribuzione batimetrica 125 - 230 m (Ref. 83892). Tropical; 14°N - 12°N, 47°E - 51°E (Ref. 114953)
Western Indian Ocean: Yemen, Gulf of Aden.
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: Lm 33.8, range 28 - 39.5 cm
Max length : 10.7 cm TL maschio/sesso non determinato; (Ref. 83892); 39.0 cm TL (female)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
This species is distinguished from all congeners its unique dorsal coloration, uniform reddish-, rusty-, or orange-brown and no any distinctive spots, blotches, or reticulations. Further distinct in having the following characters: spiracles with few, knoblike, and somewhat inconspicuous spiracular papillae (at least in sexually mature or almost mature specimens); spiracles and eyes relatively close together (no large gap in between); base of first dorsal fin extending just posterior to level of pelvic fin axil (not entirely positioned over bases of pelvic fins); distance between second dorsal and caudal fin greater than distance between first and second dorsal fins; claspers with fleshy integumental flap in clasper glans region (Ref. 83892).
Body shape (shape guide): other.
Ovoviviparous (Ref. 50449). Poorly known. Maturity size of males reported at 39 cm TL, still adolescent at 28 cm TL (Ref. 114953).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449).
de Carvalho, M.R., M.F.W. Stehmann and L.G. Manilo, 2002. Torpedo adenensis, a new species of electric ray from the Gulf of Aden, with comments on nominal species of Torpedo from the western Indian Ocean, Arabian Sea, and adjacent areas (Chondrichthyes: Torpediniformes: Torpedinidae). Am. Mus. Novit. 3369:1-34. (Ref. 83892)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00678 - 0.03229), b=2.97 (2.78 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 4.2 ±0.7 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Live bearer with low fecundity (RF)).
Vulnerabilità della pesca (Ref.
59153): Low to moderate vulnerability (29 of 100).
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