-
- About this page
- Languages
- User feedbacks
- Citación
- Uploads
-
Related species
- Species in
Dipturus - Species in
Rajidae - - Classification -
- Rajidae
- Rajiformes
- Elasmobranchii
- Chordata
- Animalia
- Species in
-
Add your observation in Fish Watcher
| Native range | All suitable habitat | Point map | Year 2050 |
|
| This map was computer-generated and has not yet been reviewed. |
| Dipturus batis AquaMaps Data sources: GBIF OBIS |
Upload your photos and videos
Pictures | Stamps, coins, misc. | Google image
Dipturus batis
Male picture by Cambraia Duarte, P.M.N. (c)ImagDOP
Pictures | Stamps, coins, misc. | Google image
Male picture by Cambraia Duarte, P.M.N. (c)ImagDOP
United Kingdom country information
Common names:
Blue grey skate, Blue skate, Cath fôr
Occurrence: native
Salinity: marine
Abundance: scarce (very unlikely) | Ref: Swaby, S.E. and G.W. Potts, 1990
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Restricted to the northern North Sea and Celtic Sea (84-271m), maximum catch rate was 4 ind./hr. Juveniles were also caught in the Celtic Sea (Ref. 82399).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/uk.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Muus, B. and P. Dahlström, 1978
National Database:
Occurrence: native
Salinity: marine
Abundance: scarce (very unlikely) | Ref: Swaby, S.E. and G.W. Potts, 1990
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Restricted to the northern North Sea and Celtic Sea (84-271m), maximum catch rate was 4 ind./hr. Juveniles were also caught in the Celtic Sea (Ref. 82399).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/uk.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Muus, B. and P. Dahlström, 1978
National Database:
Common names from other countries
Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa
Elasmobranquios (tiburones y rayas) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
More on author: Linnaeus.
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
More on author: Linnaeus.
Environment: milieu / climate zone / depth range / distribution range Ecología
marino demersal; rango de profundidad 100 - 1000 m (Ref. 4426), usually 30 - 600 m (Ref. 127222). Temperate; 70°N - 48°N, 30°W - 20°E (Ref. 127222)
Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri
Northeastern Atlantic: Iceland to the British isles; it was formerly more widespread, including the Mediterranean Sea and North Africa, but the range is thought to be reduced due to fishing.
Length at first maturity / Tamaño / Peso / Age
Maturity: Lm 160.0 range ? - ? cm
Max length : 285 cm TL macho / no sexado; (Ref. 35388); common length : 100.0 cm TL macho / no sexado; (Ref. 3261); peso máximo publicado: 113.0 kg (Ref. 114424); edad máxima reportada: 51 años (Ref. 4483)
Max length : 285 cm TL macho / no sexado; (Ref. 35388); common length : 100.0 cm TL macho / no sexado; (Ref. 3261); peso máximo publicado: 113.0 kg (Ref. 114424); edad máxima reportada: 51 años (Ref. 4483)
Short description Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 0; Espinas 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).
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).
Life cycle and mating behavior Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
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).
Main reference
Upload your references | Referencias | Coordinador : McEachran, John | Colaboradores
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)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Critically Endangered (CR) (A2bcd); Date assessed: 02 April 2021
Threat to humans
Harmless
Human uses
Pesquerías: escaso valor comercial; pesca deportiva: si
FAO(pesquerías: producción; publication : search) | FishSource | Sea Around Us
Más información
Trophic ecology
componentes alimenticios
Composición de la dieta
consumo de alimento
Food rations
Despredadores
componentes alimenticios
Composición de la dieta
consumo de alimento
Food rations
Despredadores
Population dynamics
Coeficiente del crecimiento para
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Reclutamiento
Abundancia
Coeficiente del crecimiento para
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Reclutamiento
Abundancia
Life cycle
Reproducción
Madurez
Fecundidad
Puesta
Spawning aggregations
Huevos
Egg development
Larva
Dinámica larvaria
Reproducción
Madurez
Fecundidad
Puesta
Spawning aggregations
Huevos
Egg development
Larva
Dinámica larvaria
Anatomy
Superficie branquial
Brain
Otolith
Superficie branquial
Brain
Otolith
Physiology
Body composition
Nutrients
Consumo del oxígeno
Tipo de natación
Velocidad de natación
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Consumo del oxígeno
Tipo de natación
Velocidad de natación
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Human related
Aquaculture systems
Perfiles de acuicultura
Razas
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
Perfiles de acuicultura
Razas
Ciguatera cases
Stamps, coins, misc.
Herramientas
E-book | Guía de campo | Claves de identificación | Asistente para frecuencias de tallas | Herramienta de ciclo de vida | Mapa de puntos | Classification Tree
| Catch-MSY |
Special reports
Download XML
Fuentes de Internet
Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes(Género, Especie) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Bases de datos nacionales | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Árbol de la vida | Wikipedia(Go, búsqueda) | World Records Freshwater Fishing | Expediente Zoológico
Estimates based on models
Preferred temperature (Ref. 115969): 7.1 - 15, mean 9.8 (based on 243 cells).
Phylogenetic diversity index (Ref. 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00324 (0.00193 - 0.00544), b=3.20 (3.06 - 3.34), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Nivel trófico (Ref. 69278): 3.5 ±0.6 se; based on diet studies.
Resiliencia (Ref. 120179): Muy bajo, población duplicada en un tiempo mínimo superior a 14 años (K=0.06; tm=11; tmax=51; fec = 40).
Fishing Vulnerability (Ref. 59153): Very high vulnerability (86 of 100).
Climate Vulnerability (Ref. 125649): Moderate vulnerability (42 of 100).