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Rostroraja alba (Lacepede, 1803)
BOTTLENOSED SKATE
Life   Vertebrata   Fish   Rajidae   Rostroraja


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

Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Rostroraja alba (Lacepède , 1803)

White skate Add your observation in Fish Watcher
Native range | All suitable habitat | Year 2100
Reviewed map
Rostroraja alba   AquaMaps   Data sources: GBIF OBIS
Upload your photos  and  videos
Pictures | Google image Image of Rostroraja alba (White skate) Rostroraja alba
Picture by Østergaard, T.

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: Rostroraja: Latin, rostrum = beak + Latin, raja, -ae = a sting ray (Ref. 45335 ) .  More on author: Lacepède .

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

Marine; demersal; depth range 30 - 600 m (Ref. 6808 ), usually 50 - 500 m (Ref. 26999 ).   Subtropical; 56°N - 37°S, 19°W - 23°E

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Atlantic: Ireland and England southward round the Cape (South Africa) to central Mozambique (Ref. 5578 ), including western Mediterranean (to Tunisia and western Greece).

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 230 cm TL male/unsexed; (Ref. 11284 ); 202.0 cm TL (female)

Short description Morphology | Morphometrics

A giant skate with a broad-based, abruptly narrow-tipped snout covered with small, sharp thorns; pectoral disc angular, and no thorns on nape or back, but three rows of large thorns on tail (Ref. 5578 ). Larger immature and adult individuals grey with numerous small white spots above, underside white with no black pores; hatchlings plain reddish-brown above, often with blue spots, and white below with broad dusky grey margins on disc (Ref. 5578 ).

Biology     Glossary (e.g. epibenthic)

Inhabit shelf and slope waters (Ref. 4426 ). Found on sand and rock-sand bottom (Ref. 6808 ). A bottom-predator of bony fishes, other elasmobranchs, fish offal, crabs, shrimps, mysids, octopi, and cuttlefish (Ref. 5578 ). Minimum depth reported taken from Ref. 4426. Maximum length for female is 202 cm (Ref. 41333 ). 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 ). Egg capsules are 12.5-18.3 cm long and 10.0-13.9 cm wide (Ref. 41250 ). About 55-156 eggs are produced per individual annually (Ref. 41250 ).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449 ). Eggs are laid in huge cases and take up to 18 months to hatch (Ref. 5578 ). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205 ).

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. 119314 )

  Endangered (EN)  (A2cd+4cd); Date assessed: 31 January 2006

CITES (Ref. 115941 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Traumatogenic (Ref. 5578 )




Human uses

Fisheries: minor commercial; gamefish: yes FAO(Publication : search ) | FishSource | Sea Around Us

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
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Ecology
Diet
Food items
Food consumption
Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
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Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
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References
Aquaculture
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Genetics
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Processing
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Stamps, Coins Misc.
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Ciguatera
Speed
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Otoliths
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Tools

E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY |

Special reports

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Download XML

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 | SeaLifeBase | Tree of Life | Wikipedia( Go , Search ) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969 ): 8.8 - 17.5, mean 13.5 (based on 474 cells). Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00309 (0.00164 - 0.00581), b=3.19 (3.03 - 3.35), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245 ). Trophic Level (Ref. 69278 ):  4.4   ±0.83 se; Based on food items. Resilience (Ref. 69278 ):  Low, minimum population doubling time 4.5 - 14 years (Fec=55). Vulnerability (Ref. 59153 ):  Very high vulnerability (84 of 100) . Price category (Ref. 80766 ):   Medium .

Entered by Agustin, Liza Q. Modified by Sampang-Reyes, Arlene G. Fish Forum
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