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Raja polystigma Regan, 1923

Speckled ray
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Raja polystigma   AquaMaps   Data sources: GBIF OBIS
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Image of Raja polystigma (Speckled ray)
Raja polystigma
Picture by Ilkyaz, A.T.

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: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
More on author: Regan.

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

marino demersal; rango de profundidad 100 - 400 m (Ref. 3167). Subtropical

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Northeast Atlantic: known only from the western Mediterranean, more common along the African coasts.

Tamaño / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL macho / no sexado; (Ref. 3167)

Biología     Glosario (por ej. epibenthic)

Found mainly on soft bottoms (Ref. 3167). Feed mainly on crustaceans and bony fishes depending on the sex, size and also partly with the season (Ref. 3167). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). About 20-62 eggs are laid by an individual in a year (Ref. 41314).

Life cycle and mating behavior Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Ripe females occurring mostly in the winter and deposit 20 to 62 egg-cases per year depending on size (Ref. 3167). Distinct pairing with embrace. Y oung may tend to follow large objects, such as their mother (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)

  Least Concern (LC) ; Date assessed: 17 December 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Pesquerías: comercial
FAO - Publication: search | FishSource |

Más información

Trophic ecology
componentes alimenticios
Composición de la dieta
consumo de alimento
Food rations
Despredadores
Ecology
Ecología
Population dynamics
Coeficiente del crecimiento para
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Reclutamiento
Abundancia
Life cycle
Reproducción
Madurez
Maturity/Gills rel.
Fecundidad
Puesta
Spawning aggregations
Huevos
Egg development
Larva
Dinámica larvaria
Distribution
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Áreas FAO
Ecosistemas
Ocurrencias, apariciones
Introducciones
BRUVS - Videos
Anatomy
Superficie branquial
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Otolith
Physiology
Body composition
Nutrients
Consumo del oxígeno
Tipo de natación
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Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genética
Heterozygosity
heritabilidad
Human related
Aquaculture systems
Perfiles de acuicultura
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Ciguatera cases
Stamps, coins, misc.
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Taxonomy
Nombres comunes
Sinónimos
Morfología
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References
Referencias

Herramientas

E-book | Guía de campo | Asistente para frecuencias de tallas | Herramienta de ciclo de vida | Mapa de puntos | Classification Tree | Catch-MSY |

Special reports

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Summary page | Datos específicos | Nombres comunes | Photos

Fuentes de Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Género, Especie | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Bases de datos nacionales | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Árbol de la vida | Wikipedia: Go, búsqueda | World Records Freshwater Fishing | Expediente Zoológico

Estimates based on models

Preferred temperature (Ref. 123201): 13.1 - 15.1, mean 14 °C (based on 40 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00166 (0.00097 - 0.00283), b=3.31 (3.17 - 3.45), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Nivel trófico (Ref. 69278):  3.3   ±0.5 se; based on diet studies.
Generation time: 10.0 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resiliencia (Ref. 120179):  Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Fec=20).
Fishing Vulnerability (Ref. 59153):  High vulnerability (62 of 100).
Price category (Ref. 80766):   Medium.
Nutrients (Ref. 124155):  Calcium = 26 [5, 122] mg/100g; Iron = 0.79 [0.21, 2.33] mg/100g; Protein = 18.2 [15.0, 21.1] %; Omega3 = 0.685 [0.212, 2.513] g/100g; Selenium = 24.4 [7.4, 76.1] μg/100g; VitaminA = 12.2 [4.4, 33.6] μg/100g; Zinc = 0.721 [0.352, 1.314] mg/100g (wet weight);