Malacoraja spinacidermis, Soft skate

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Malacoraja spinacidermis (Barnard, 1923)

Soft skate
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Malacoraja spinacidermis   AquaMaps   Data sources: GBIF OBIS
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Image of Malacoraja spinacidermis (Soft skate)
No image available for this species;
drawing shows typical species in Rajidae.

Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Malacoraja: Greek, malakos = soft + Latin, raja, -ae = ray, fis (Raja sp.) (Ref. 45335).
More on author: Barnard.

Environment: milieu / climate zone / depth range / distribution range Ecologie

; marien bathydemersaal; diepteverspreiding 450 - 1570 m (Ref. 117245). Deep-water; 67°N - 38°S, 72°W - 25°E

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Eastern Atlantic: Baffin Bay-Davis Strait Offshore to Iceland-Faeroe Ridge, off northwest Africa (Rio de Oro), off southern Namibia and South Africa.

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 70.0 cm TL mannelijk/geslacht niet bekend; (Ref. 4426)

Korte beschrijving Morfologie | Morfometrie

Very broad, almost pentagonal disc, light above and abruptly dark below; snout bluntly pointed with a flexible tip, eyes small and close together, and a disc with broadly rounded rear margins and tips (Ref. 5578). Small juveniles with and adults without thorns and covered only with small denticles (Ref. 5578). Slate-grey or greyish-brown above except rear margins of pectoral and pelvic fins and claspers of adult males which are dark brown; dark brown below, sometimes with light blotches (Ref. 5578). Lack of large thorns on its disc posterior to the scapular region (Ref. 6902).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

A very rare species inhabiting continental slopes and probably down to the abyssal plains (Ref. 3167). Benthic (Ref. 58426). Adults usually at depths greater than 1,500 m while juveniles are mainly taken from about 450 m downward (Ref. 4426). Minimum depth reported taken from Ref. 4426. Feeds on crustaceans (Ref. 58426). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Oviparous (Ref. 3167). Paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).

Voornaamste referentie Upload your references | Referenties | Coördinator : McEachran, John | Medewerkers

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. 125652)

  Niet bedreigd (LC) ; Date assessed: 20 June 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates based on models

Preferred temperature (Ref. 115969): 3.3 - 8.5, mean 5.9 °C (based on 122 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00143 - 0.00636), b=3.23 (3.06 - 3.40), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245).
Trophic level (Ref. 69278):  3.5   ±0.50 se; based on food items.
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (48 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .
Nutrients (Ref. 124155):  Calcium = 14.1 [2.5, 45.0] mg/100g ; Iron = 0.328 [0.072, 0.839] mg/100g ; Protein = 15.7 [13.3, 18.1] % ; Omega3 = 0.445 [0.173, 1.313] g/100g ; Selenium = 16.5 [4.6, 50.2] μg/100g ; VitaminA = 6.94 [2.04, 23.89] μg/100g ; Zinc = 0.362 [0.179, 0.773] mg/100g (wet weight);