Dipturus batis

(Linnaeus, 1758)


Blue skate
Classification: Elasmobranchii Rajiformes Rajidae

Reference of the original description
Linné, C. (1758)
Systema Naturae per regna tria naturae, regnum animale, secundum classes, ordines, genera, species, cum characteribus differentiis synonymis, locis. Tomus I. Editio decima, reformata. Stockholm, Laurentii Salvii, 824pp.

Image of the original description
No image in first description.

Images of the original description (synonym)
Synonyms / new combinations and misspellings
Dasybatis batis, Dipturus cf. batis, Dipturus cf. flossada, Dipturus cf. intermedia, Dipturus flossada, Laeviraja batis, Laeviraja macrorhynchus, Propterygia hyposticta, Raia batis, Raia flossada, Raia gaimardi, Raia macrorhynchus, Raia vulgaris, Raja batis, Raja flossada, Raja gaimardi, Raja macrorhyncha, Raja macrorhynchus, Raja macrorynchus, Raja (Dipturus) batis

Types
Dipturus batis
XXXX: No types known;
Propterygia hyposticta
XXXX: No types known;
Raia flossada
XXXX: No types known;
Raia gaimardi
Holotype: MNHN: 1794;
Raja macrorynchus
XXXX: No types known;


Description :


Citation: Dipturus batis (Linnaeus, 1758): In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 10/2024

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Dipturus batis (Linnaeus, 1758), © FAO, www.fish-base.org
Common names
deu \(T\) Gemeiner Rochen, deu \(T\) Glattrochen, deu \(T\) Grauer Rochen, deu \(T\) Rochen, spa Noriega, spa Raya noruega, fra \(T\) Flotte, fra \(T\) Pocheteau blanc, fra \(T\) Pocheteau gris, fra \(T\) Pochette, eng Blue grey skate, eng Blue skate, eng Common skate, eng Flapper skate, eng Gray skate, eng Grey skate, eng Skate, ita Razza bavosa, ita Razza cappuccina, ita Razza comune, ita Rebekkin skur, por Arrai, por Raia, por Raia-oirega

Short Description
Snout very long and pointed; length before eyes 2,5-4,0 times distance between them; disc broadly rhombic with acute outer corners; upper surface and underside smooth in young, partly prickly in larger specimens; no thorns on disc, a row of 12-18 thorns along tail; 40-56 tooth rows; upper surface olive-grey or brown with a variable pattern of light spots, underside ashy-grey to blue-grey [7182]. Diet: Barents Sea (data base: of 39 stomachs examined): Blue skate stomach contents consisted largely of fish (~70% by mass), with young cod and haddock (Melanogrammus aeglefinus), redfish and long rough dab (Hippoglossoides platessoides limandoides) prevalent. One of the stomachs contained a young round skate of 17 cm TL. Fisheries waste was another important food source (25% by mass). [5910];

Distribution
Eastern Atlantic: Norway, Iceland, the Faroes to Senegal, including western Mediterranean and western part of the Baltic. Extirpated by trawling from much of its former range [20203]. Source: www.gbif.org

Human uses
fisheries: minor commercial; gamefish: yes; price category: medium; price reliability: reliable: based on ex-vessel price for this species

Biology
Oviparous, paired eggs are laid. Embryos feed solely on yolk [733]. Egg-cases laid in spring and summer, very large [7182]. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother [17086]. Eggs have horn-like projections on the shell [17086].

Size / Weight / Age
285 cm TL (male/unsexed; [20241]); max. published weight: 97.1 kg (Ref. 40637)

Habitat
demersal; marine; depth range 100 - 1000 m [7180], usually 100 - 200 m [7180]

Remarks
shark-references Species-ID=1981;

Parasites (arranged by Jürgen Pollerspöck)
Conoidasida
  • Eimeria raiarum Van den Berghe, 1937 [32027]

Monogenea
Cestoda
Trematoda
  • Otodistomum veliporum (Creplin, 1837) Stafford, 1904 [22616]

Nematoda
  • Ascaris rajae Diesing, 1851 [17029]
  • Metanisakis tricupola (Gibson, 1973) [17029]
  • Paracanthocheilus rajae Kreis, 1952 [17029]

Copepoda
  • Acanthochondrites annulatus (Olsson, 1869) [16609] [16558]
  • Caligus elongatus Von Nordmann, 1832 [16598]
  • Charopinus dalmanni (Retzius, 1829) [16609]
  • Nemesis robusta (Van Beneden, 1851) [16609]
  • Schistobrachia ramosa (Krøyer, 1863) [15303]
  • Trebius caudatus Krøyer, 1838 [14785] [16609]

Isopoda
  • Natatolana borealis (Lilljeborg, 1851) [23898]

Hirudinea
  • Pontobdella muricata (Linnaeus, 1758) [22616]


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