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Raja maderensis Lowe, 1838
MADEIRAN RAY
Life   Vertebrata   Fish   Rajidae   Raja


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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Raja&speciesname=maderensis ---> https://www.fishbase.se/Summary/speciesSummary.php?genusname=Raja&speciesname=maderensis
https://www.fishbase.se/Summary/speciesSummary.php?genusname=Raja&speciesname=maderensis ---> https://www.fishbase.se/summary/Raja-maderensis.html

Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Raja maderensis Lowe , 1838

Madeiran ray Upload your photos  and  videos
Pictures | Google image Image of Raja maderensis (Madeiran ray) Raja maderensis
Picture by Wirtz, P.

Classification / Names Common names | Synonyms | Catalog of Fishes ( gen. , sp. ) | ITIS | CoL | WoRMS | Cloffa

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

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

Marine; bathydemersal; depth range ? - 500 m.   Deep-water; 33°N - 31°N

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | 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 / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 85.0 cm TL male/unsexed; (Ref. 2683 ); common length : 50.0 cm TL male/unsexed; (Ref. 2683 )

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Anal spines : 0; Anal soft rays : 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 ).

Biology     Glossary (e.g. 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 Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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

Main reference Upload your references | References | Coordinator : McEachran, John | Collaborators

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. 120744 )

  Vulnerable (VU)  (D2); Date assessed: 11 December 2014

CITES (Ref. 115941 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: commercial FAO(Publication : search ) | FishSource | Sea Around Us

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Summary page | Point data | Common names | Photos

Internet sources

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 | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia( Go , Search ) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00275 (0.00124 - 0.00609), b=3.25 (3.07 - 3.43), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  3.5   ±0.37 se; Based on food items. Resilience (Ref. 69278 ):  Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100). Vulnerability (Ref. 59153 ):  Moderate to high vulnerability (55 of 100) . Price category (Ref. 80766 ):   Medium .

Entered by Luna, Susan M. Modified by Luna, Susan M. Fish Forum
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