Elasmobranchii (haaien en roggen) (sharks and rays) >
Torpediniformes (Electric rays) >
Torpedinidae (Electric rays)
Eponymy: Leopoldo Nobili (1784–1835) was an Italian physicist who studied animal electricity and invented a number of instruments used in thermodynamics and electrochemistry. [...] (Ref. 128868), visit book page.
More on author: Bonaparte.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien benthopelagisch; oceanodroom; diepte 2 - 800 m (Ref. 35509), usually 10 - 150 m (Ref. 35388). Subtropical; 60°N - 48°S, 180°W - 180°E (Ref. 114953)
Circumglobal. Eastern Atlantic: Scotland (rare in North Sea) to Morocco, whole of Mediterranean, but not Black Sea; Cap Blanc in Mauritania to Gulf of Guinea, São Tomé Island; Walvis Bay, Namibia to Mossel Bay, South Africa (Ref. 5578). Western Atlantic: Nova Scotia, Canada south to Brazil (Ref. 26340). Eastern Indian Ocean: Australia (Ref. 114953). Southwest Pacific: New Zealand (Ref. 114953).
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 180 cm TL mannelijk / geslacht onbekend; (Ref. 2803); common length : 40.0 cm TL mannelijk / geslacht onbekend; (Ref. 3261); max. gepubliceerd gewicht: 90.0 kg (Ref. 7251)
Large ray with a huge, paddle-shaped caudal fin and with no papillae around spiracles. Shiny black or dark grey above, underside white (Ref. 5578). Broad subcircular disc, short snout anterior to the eyes. Smooth skin, short thick tail (Ref. 6902). Dark chocolate to purplish brown above, without spots, white below, but with edges of disc and pelvic fins of same hue as upper surface, tail with irregular dark margins (Ref. 6902).
Juveniles benthic over soft bottoms or near coral reefs (Ref. 12951) from 10-150 m; adults are semi-pelagic to pelagic, swimming in the water column and have been reported to migrate over long distances (Ref. 2803). Found on insular slopes to at least 925 m depth (Ref. 114953). Feeds mainly on pelagic and benthic bony fishes and small sharks (Ref. 5578). Ovoviviparous (Ref. 50449). Produces litters of up to 60 pups. In South Pacific region, males reaches maturity at ca. 60 cm TL (Ref. 114953). Packs a powerful electric shock of up to 220 volts (Ref. 9710).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
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). With up to 60 in a litter. Gestation period one year (Ref. 12951). Size at birth about 23 cm (Ref. 12951).
Stehmann, M. and D.L. Bürkel, 1984. Torpedinidae. p. 159-162. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the north-eastern Atlantic and Mediterranean. UNESCO, Paris. Vol. 1. (Ref. 2803)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
Gebruik door de mens
Visserij: van geen belang; sportvis: ja
Tools
Speciale rapporten
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Internetbronnen
Estimates based on models
Preferred temperature (Ref.
123201): 7.3 - 27.5, mean 13.9 °C (based on 3020 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01445 (0.01100 - 0.01900), b=2.98 (2.90 - 3.06), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trofisch niveau (Ref.
69278): 4.5 ±0.6 se; based on diet studies.
Weerstandsvermogen (Ref.
120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec=60;).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
Nutrients (Ref.
124155): Calcium = 4.55 [0.56, 83.64] mg/100g; Iron = 0.469 [0.043, 5.703] mg/100g; Protein = 16.5 [12.3, 20.1] %; Omega3 = 0.287 [0.104, 0.796] g/100g; Selenium = 43.8 [7.7, 218.9] μg/100g; VitaminA = 10.9 [0.8, 145.9] μg/100g; Zinc = 0.386 [0.021, 4.499] mg/100g (wet weight);
