Raja maderensis, Madeiran ray : fisheries

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Raja maderensis Lowe, 1838

Madeiran ray
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Raja maderensis
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Classification / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (hajar och rockor) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).  More on author: Lowe.

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

; marina djupbottenlevande; djupintervall ? - 500 m.   Deep-water; 33°N - 31°N

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Eastern Atlantic: endemic to Madeira; possibly Azores. Nominal records from western Africa and the Canary Islands could not be verified and are probably misidentifications.

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 85.0 cm TL hane/ej könsbestämd; (Ref. 2683); common length : 50.0 cm TL hane/ej könsbestämd; (Ref. 2683)

Short description Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt): 0; Taggstrålar i analfenan 0; Mjukstrålar i analfenan: 0. Upper surface wholly prickly, underside almost entirely prickly; orbital thorns separate, a regular row of 21-25 large thorns from nape to first dorsal fin; upper surface dark brown with a constant pattern of irregular light spots forming broad undulating transverse bands with narrower unspotted bands between, underside white, but grey on snout and broad dark margin to disc from behind midpoint of anterior margin, also blackish at tip of tail (Ref. 3167).

Biologi     Ordlista (t.ex. epibenthic)

Feeds on all kinds of benthic animals (Ref. 3167). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Oviparous (Ref. 3167). Paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).

Main reference Upload your references | referenser | Koordinator : McEachran, John | Medarbetare

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. 123251)

  Sårbar, se IUCNs rödlista (VU) (D2); Date assessed: 11 December 2014

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fiskeri: kommersiell
FAO(Publication : search) | FishSource | Sea Around Us

Ytterligare information

Länder
FAO områden
Ekosystem
Förekomster
Utplanteringar
Stocks
Ekologi
Föda
Födoslag
Födointag
Näringsinnehåll
Populärnamn
synonymer
Metabolik
Predatorer
Ekotoxikologi
Reproduktion
Könsmognad
Lek
Spawning aggregation
Fecundity
Ägg
Egg development
Age/Size
Tillväxt
Length-weight
Length-length
Length-frequencies
Morfometri
Morfologi
Larver
Larvdynamik
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referenser
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Stamps, Coins Misc.
Ljud
Ciguatera
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Otoliths
Hjärnstorlek
Syn

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Special reports

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Internet-källor

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Nationella databaser | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia(Go, sök) | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00288 (0.00132 - 0.00632), b=3.23 (3.06 - 3.40), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trofisk nivå (Ref. 69278):  3.5   ±0.37 se; based on food items.
Resiliens (Ref. 120179):  Låg, lägsta populationsfördubblingstid 4,5-14 år (Fec assumed to be <100).
Vulnerability (Ref. 59153):  Moderate to high vulnerability (55 of 100) .
Price category (Ref. 80766):   Medium.