Bathyraja aleutica  (Gilbert, 1896)

Aleutian skate
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Bathyraja aleutica   AquaMaps   Data sources: GBIF OBIS
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Image of Bathyraja aleutica (Aleutian skate)
Bathyraja aleutica
Picture by Orlov, A.

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

Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Arhynchobatidae (Skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335).

Environment / Climate / Range Ecology

Marine; bathydemersal; depth range 15 - 1602 m (Ref. 50550).   Deep-water

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

North Pacific: northern Japan to the Aleutian Islands and southeastern Alaska.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 112 - 132 cm
Max length : 161 cm TL male/unsexed; (Ref. 56527); max. published weight: 23.1 kg (Ref. 56527)

Short description Morphology | Morphometrics

Paired thorns on scapular region; a series of continuous thorns from nuchal region onto tail (Ref. 559). Tail long, its length equal to or longer than disc length (Ref. 559). Snout length 1/2 or more of distance from snout tip to 5th gill opening (Ref. 559). Ventral side of disk white, with grayish margin (Ref. 559).

Biology     Glossary (e.g. epibenthic)

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 capsule measures 120-136 mm long and 73-90 mm wide (Ref. 41249, 41253).

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

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). 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. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

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

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00309 (0.00209 - 0.00457), b=3.11 (2.99 - 3.23), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.1   ±0.76 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):  Very high vulnerability (86 of 100) .