Bathyraja caeluronigricans, Purple-black skate

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Bathyraja caeluronigricans Ishiyama & Ishihara, 1977

Purple-black skate
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Bathyraja caeluronigricans   AquaMaps   Data sources: GBIF OBIS
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Image of Bathyraja caeluronigricans (Purple-black skate)
Bathyraja caeluronigricans
Male picture by Ishihara, H.

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (sharks and rays) > Rajiformes (Skates and rays) > Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335);  caeluronigricans: Named for the purplish black color of the dorsal side of the disk (Ref. 75535).

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

marien demersaal; diepte 200 - 400 m (Ref. 58018). Temperate

Verspreiding Landen | FAO regio's | Ecosystemen | Voorkomen | Point map | Introducties | Faunafri

Northwest Pacific: north of Tôhoku, Japan to the Sea of Okhotsk.

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 74.4 cm WD mannelijk / geslacht onbekend; (Ref. 75535); 72.2 cm WD (female)

Korte beschrijving Morfologie | Morfometrie

This species is distinguished from its congeners in Bathyraja in having a dark purplish brown color on both sides of the body; the spiracle is longer than eyeball and with deep concavity at their anterior part; clasper with a deep cleft; dense silky fibers cover the egg capsule (Ref. 75535).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).

Hoofdreferentie Upload your references | Referenties | Coördinator : McEachran, John | Medewerkers

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)

Status op de Rode Lijst van het IUCN (Ref. 130435)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

FAO - Publication: search | FishSource |

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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00253 - 0.01042), b=3.12 (2.95 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  4.0   ±0.7 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (66 of 100).