Dipturus batis, Blue skate : fisheries, gamefish

Dipturus batis (Linnaeus, 1758)

Blue skate
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Dipturus batis   AquaMaps   Data sources: GBIF OBIS
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Dipturus batis
Male Photo de Cambraia Duarte, P.M.N. (c)ImagDOP

Classification / Noms Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

Élasmobranches (requins et raies) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
More on author: Linnaeus.

Environnement : milieu / zone climatique / profondeur / gamme de distribution Écologie

marin démersal; profondeur 100 - 1000 m (Ref. 4426), usually 30 - 600 m (Ref. 127222). Temperate; 70°N - 48°N, 30°W - 20°E (Ref. 127222)

Distribution Territoires | Zones FAO | Écosystèmes | Occurrences | Carte par point | Introductions | Faunafri

Northeast Atlantic from Iceland and Scandinavia to the Bay of Biscay, including the United Kingdom, Ireland, and coasts of northwest Europe, up to the Scandinavian Peninsula and into the Skagerrak and Kattegat.

Longueur à la première maturité / Taille / Poids / Âge

Maturité: Lm 160.0  range ? - ? cm
Max length : 285 cm TL mâle / non sexé; (Ref. 35388); common length : 100.0 cm TL mâle / non sexé; (Ref. 3261); poids max. publié: 113.0 kg (Ref. 114424); âge max. reporté: 51 années (Ref. 4483)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 0; Épines anales: 0. This species is characterized by the following: snout broadly angular, length 5-6.3 times orbit length; disc broadly rhombic, anterior margin deeply concave; a row of 12-31 predorsal thorns in median row along tail (disc smooth in young; denticles confined to dorsal head and along anterior disc margin on both surfaces in adults; disc thorns small in young, largely absent in adults); lateral thorns on tail perpendicular to body axis; interspace between dorsal fins 1.2 ± 0.4 TL, the fins rounded, upright, near tail tip; upper surface olive-grey or brown with a variable pattern of light blotches, with yellowish ring-like markings; underside greyish; iris yellowish (Ref. 114953, 127223).
Body shape (shape guide): other; Cross section: flattened.

Biologie     Glossaire (ex. epibenthic)

Benthic species in shelf and slope waters, mainly within the 200 m range along the continental shelf, but down to 600 m along continental slopes and seamounts (Ref. 127222). Feeds on all kinds of bottom invertebrates and fish, including other skates (Ref. 114953). Oviparous, with long embryonic development. Males reach maturity at ca. 115 cm TL, females at 123 cm TL; birth size at ca. 21 cm TL (Ref. 114953). Biology may be unclear due to past taxonomic confusion Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Mate in spring and the egg capsules are laid during the summer. Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 10.6-24.5 cm long and 5.0-14.5 cm wide (Ref. 41250). About 40 eggs per individual are laid annually (Ref. 41250). Flesh is marketed fresh or smoked (Ref. 35388).

Cycle de vie et comportement reproducteur Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Egg-cases laid in spring and summer, very large (Ref. 3167). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs have horn-like projections on the shell (Ref. 205).

Référence principale Téléchargez vos références | Références | Coordinateur : McEachran, John | Collaborateurs

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)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))

  Niveau de menace critique (CR) (A2bcd); Date assessed: 02 April 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: intérêt commercial mineur; pêche sportive: oui
FAO - pêcheries: landings search; Publication: search | FishSource | Sea Around Us

Plus d'informations

Écologie trophique
Aliments (proies)
Composition du régime alimentaire
Consommation alimentaire
Rations alimentaires
Prédateurs
Écologie
Écologie
Dynamique des populations
Paramètres de croissance
Âges / tailles maximales
Longueur-poids rel.
Rel. longueur-longueur.
Fréquences de longueurs
Conversion de masse
Recrutement
Abondance
Cycle de vie
Reproduction
Maturité
Maturité/épines rel.
Fécondité
Frai
Agrégats de frai
Œufs
Développement de l'œuf
Larves
Dynamique des populations larvaires
Distribution
Territoires
Zones FAO
Écosystèmes
Occurrences
Introductions
BRUVS - Vidéos
Anatomie
Surface branchiale
Cerveau
Otolithe
Physiologie
Composition corporelle
Nutriments
Consommation d'oxygène
Type de natation
Vitesse de nage
Pigments visuels
Son de poisson
Maladies et parasites
Toxicité (CL50)
Génétique
génôme
Génétique
Hétérozygotie
Héritabilité
Diversité génétique
Liées à l'homme
Systèmes d'aquaculture
Profils d'aquaculture
Souches
Cas de ciguatera
Timbres, pièces de monnaie, divers
Sensibilisation
Collaborateurs
Références
Références

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Sources Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - pêcheries: landings search; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | Bases de données nationales | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoological Record

Estimations basées sur des modèles

Indice de diversité phylogénétique
(Réf. 82804)
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00331 (0.00198 - 0.00554), b=3.20 (3.06 - 3.34), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Niveau trophique
(Réf. 69278)
3.5   ±0.6 se; based on diet studies.
Generation time 19.3 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Résilience
(Réf. 120179)
Très faible, temps minimum de doublement de population supérieur à 14 ans (K=0.06; tm=11; tmax=51; fec = 40).
Vulnérabilité de la pêche
(Ref. 59153)
Very high vulnerability (86 of 100). 🛈
Vulnérabilité climatique
(Ref. 125649)
Moderate vulnerability (42 of 100). 🛈
Catégorie de prix
(Ref. 80766)
Medium.
Nutriments
(Ref. 124155)
Calcium = 5.44 [0.70, 105.27] mg/100g; Iron = 0.623 [0.058, 8.004] mg/100g; Protein = 16.2 [14.1, 18.2] %; Omega3 = 0.357 [0.147, 0.840] g/100g; Selenium = 50.9 [9.5, 261.5] μg/100g; VitaminA = 4.02 [0.31, 51.49] μg/100g; Zinc = 0.371 [0.023, 4.306] mg/100g (wet weight);