Elasmobranchii (sharks and rays) > Rajiformes
(Skates and rays) > Arhynchobatidae
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335). More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range - m (Ref. ), usually - m (Ref. ). Polar; 0°C - ; 48°S - 78°S, 180°W - 180°E
Southern Ocean: common on the Kerguelen Plateau, around South Orkney and South Shetland islands. In the Antarctic Peninsula, it occurs in the northeastern Weddell Sea and on Gunnerus Ridge. A single record comes from the Pacific Ocean sector, in the Ross Sea. Southeast Pacific: Chile (Ref. 9068).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 100.0 cm TL male/unsexed; (Ref. )
Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
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. 124695)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): -1.8 - 2, mean -0.9 °C (based on 119 cells).
Phylogenetic diversity index (Ref. 82805
= 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
Trophic level (Ref. 69278
): 4.0 ±0.7 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): 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) .
Nutrients (Ref. 124155
): Calcium = 6.79 [0.94, 40.85] mg/100g ; Iron = 0.253 [0.046, 0.979] mg/100g ; Protein = 14.2 [12.6, 16.1] % ; Omega3 = 0.399 [0.160, 1.011] g/100g ; Selenium = 15.1 [4.2, 56.2] μg/100g ; VitaminA = 17.3 [2.8, 97.0] μg/100g ; Zinc = 0.261 [0.066, 0.924] mg/100g (wet weight);