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Bathyraja trachura  (Gilbert, 1892)

Roughtail skate
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| Native range | All suitable habitat | PointMap | Year 2050 |
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Bathyraja trachura   AquaMaps   Data sources: GBIF OBIS
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Image of Bathyraja trachura (Roughtail skate)
Bathyraja trachura
Picture by Van Orden, W.

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 213 - 2550 m (Ref. 80796).   Deep-water

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 56.0 cm WD male/unsexed; (Ref. 2850)

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

North Pacific: Bering Sea to northern Baja California, Mexico.

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 capsules are 7.5 cm long and 6.1 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.

IUCN Red List Status (Ref. 90363)

  Least Concern (LC) 

Threat to humans

  Harmless




Human uses

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

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Summary page | Point data | Common names | Photos

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 | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00530 (-0.12580 - 0.13641), b=3.00 (2.92 - 3.09), based on LWR estimates for species & family-BS (Ref. 93245).
Trophic Level (Ref. 69278):  4.0   ±0.7 se; Based on size and trophs of closest relatives
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 (69 of 100) .
Price category (Ref. 80766):   Medium.