Bathyraja maculata  Ishiyama & Ishihara, 1977

White-blotched skate
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Bathyraja maculata   AquaMaps   Data sources: GBIF OBIS
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Image of Bathyraja maculata (White-blotched skate)
Bathyraja maculata
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);  maculata: Name from the Latin adjective 'maculata' meaning blotched, referring to the color markings on the dorsal side of the disc.

Environment / Climate / Range Ecology

Marine; bathydemersal; depth range 70 - 1193 m (Ref. 50610).   Deep-water; 59°N - 51°N

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 94 - 101 cm
Max length : 115 cm TL male/unsexed; (Ref. 56527); max. published weight: 8.5 kg (Ref. 56527)

Short description Morphology | Morphometrics

This species is distinguished from its congeners Bathyraja in having a white blotches of different sizes on the dorsal surface of the disk, lateral folds of tail are broad; clasper has a large pseudosiphon; dense silky fibers covering egg capsule (Ref. 75535).

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

Northwest Pacific: known from the type locality, the Bering Sea.

Biology     Glossary (e.g. epibenthic)

Holotype taken from a depth of about 450 m (Ref. 26282). Maximum depth based on report for Bering Sea and Aleutian Islands (Ref. 80796). 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 10.19 cm long and 6.28 cm wide (Ref. 41249).

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. 90363)

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 | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | 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=0.00316 (0.00204 - 0.00490), b=3.13 (3.00 - 3.26), based on LWR estimates for species & Genus-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.1   ±0.71 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):  High to very high vulnerability (72 of 100) .
Price category (Ref. 80766):   Medium.