Raja straeleni, Spotted skate : fisheries, gamefish

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Raja straeleni Poll, 1951

Spotted 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.
Raja straeleni   AquaMaps   Data sources: GBIF OBIS
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Image of Raja straeleni (Spotted skate)
Raja straeleni
Picture by Zsilavecz, G.

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: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335);  straeleni: Named after V. Van Straelen, director of IRSNB, Belgium (Ref. 377).  More on author: Poll.

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

; marien demersaal; oceanodroom; diepteverspreiding 80 - 800 m (Ref. 11284), usually 100 - 300 m (Ref. 26999).   Tropical; 15°N - 30°S

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

Eastern Atlantic: Rio de Oro, Western Sahara to South Africa.

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 70.0 cm TL mannelijk/geslacht niet bekend; (Ref. 26999); 67.0 cm TL (female); Maximaal gepubliceerd gewicht: 1.4 kg (Ref. 377); Maximaal gepubliceerd gewicht: 1.4 kg

Korte beschrijving Morfologie | Morfometrie

A black-spotted skate with a blunt, angular snout, a long, stout tail, and a broad angular disc; strong thorns on upper surface of disc and tail at all stages, sometimes on underside in large individuals (Ref. 5578). Brown to grey dorsally, with small to large black spots, whorls and blotches; many with gold and black, traversely oblong eyespot on each pectoral base; white ventrally with no dark pores (Ref. 5578). Juveniles have no dark spots above (Ref. 2708).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Found in shallow enclosed bays and on the slope (Ref. 5578). Feeds on invertebrates, bony fishes and fish offal. Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Caught by shore and ski-boat anglers and by hake trawlers. Pectoral fins sold as 'skate wings' (Ref. 5578). Undergoes regular migration, towards the coast during the warm season and towards deep waters in winter (Ref. 5377).

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

Oviparous, 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. 123251)

  Onvoldoende gegevens (DD) ; Date assessed: 05 September 2003

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





Gebruik door de mens

Visserij: commercieel; vis voor de hengelsport: ja
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Estimates based on models

Preferred temperature (Ref. 115969): 10.2 - 15.7, mean 12.3 °C (based on 76 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00288 (0.00131 - 0.00635), b=3.23 (3.06 - 3.40), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.0   ±0.62 se; based on food items.
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).
Kwetsbaarheid (Ref. 59153):  Moderate vulnerability (45 of 100) .
Prijsklasse (Ref. 80766):   Medium.