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: Norman.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range - m (Ref. ), usually - m (Ref. ). Temperate; 0°C -
Southwest Atlantic: Uruguay to Argentina (Ref. 58839).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
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
Estimates based on models
Preferred temperature (Ref. 115969
): 3.3 - 6.4, mean 5.4 °C (based on 116 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
): 3.4 ±0.45 se; based on food items.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Vulnerability (Ref. 59153
): Very high vulnerability (78 of 100) .
Nutrients (Ref. 124155
): Calcium = 80.9 [11.5, 589.8] mg/100g ; Iron = 0.347 [0.058, 1.989] mg/100g ; Protein = 13.1 [11.2, 14.8] % ; Omega3 = 1.24 [0.29, 5.50] g/100g ; Selenium = 2.7 [0.4, 18.5] μg/100g ; VitaminA = 987 [86, 10,113] μg/100g ; Zinc = 1.26 [0.27, 5.47] mg/100g (wet weight); based on nutrient studies.