Elasmobranchii (haaien en roggen) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Rajella: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien bathydemersaal; diepte 800 - 1360 m (Ref. 106604), usually 1200 - ? m (Ref. 27314). Deep-water
Southeast Pacific: Chile (Ref. 27540). Southwest Atlantic: off Brazil (Ref. 86346).
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 75.0 cm TL mannelijk / geslacht onbekend; (Ref. 106604)
Holotype taken from a depth of 1200 m (Ref. 26282). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | 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)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Meer informatie
Leeftijd/Grootte
Groei
Lengte-gewicht
Lengte-lengte
Lengtefrequenties
Morfometrie
Morfologie
Larven
Larvale populatiedynamiek
Rekrutering
Abundantie
BRUVS
ReferentiesAquacultuurAquacultuurprofielKweeklijnenGeneticaElectrophoresesErfelijkheidZiektesVerwerkingNutrientsMassaconversie
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00141 - 0.00645), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.7 ±0.5 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (50 of 100).
Nutrients (Ref.
124155): Calcium = 7.64 [1.39, 39.72] mg/100g; Iron = 0.339 [0.081, 1.055] mg/100g; Protein = 16.4 [13.6, 19.1] %; Omega3 = 0.543 [0.159, 2.003] g/100g; Selenium = 16.1 [4.1, 52.2] μg/100g; VitaminA = 7.34 [1.81, 30.37] μg/100g; Zinc = 0.373 [0.185, 0.692] mg/100g (wet weight);