Elasmobranchii (Haie und Rochen) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
Eponymy: John Tee-Van (1897–1967) joined the staff of the Bronx Zoo (1911) as an assistant keeper in the bird house. [...] (Ref. 128868), visit book page.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
seewasser bathydemersal; tiefenbereich 310 - 1900 m (Ref. 114953). Deep-water; 35°N - 4°S, 97°W - 35°W (Ref. 114953)
Western Atlantic: North Carolina (Ref. 114953), off Florida (Ref. 12965, 13608) including Gulf of Mexico (Ref. 114953) to northern coast of Colombia, and off Suriname (Ref. 13608 and Brazil (Ref. 53436)
Größe / Gewicht / Alter
Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 84.0 cm TL Männchen/unbestimmt; (Ref. 114953)
Lack of thorns along the midbelt of the disc from the level of the axils of the pectoral fins to the vicinity of the spiracles. Tails widen rearward toward the dorsal fins. No interspace between the bases of the dorsal fins. Upper surface pale brown, darker along posterior margins of disc, pelvic fins and tail. Dorsal fins and caudal black. Lower surface margined with black rearward from the level of the mouth (Ref. 6902).
Body shape (shape guide): other.
Found on upper continental slope (Ref. 114953). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Males reaches maturity at ca.63 cm TL (Ref. 114953).
Lebenszyklus und Paarungsverhalten
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: weniger kommerziell
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Internet Quellen
Schätzungen auf der Grundlage von Modellen
Bevorzugte Temperatur (Ref.
123201): 7 - 15, mean 10.1 °C (based on 115 cells).
Phylogenetischer Diversitätsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00131 - 0.00604), b=3.25 (3.08 - 3.42), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophische Ebene (Ref.
69278): 3.8 ±0.6 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Fec assumed to be <100).
Anfälligkeit der Fischerei (Ref.
59153): Moderate to high vulnerability (54 of 100).
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