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. Temperate
Southwest Atlantic: Uruguay to Argentina (Ref. 58839). Southeast Pacific: Chile.
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. 126983)
Threat to humans
Estimates based on models
Preferred temperature (Ref. 123201
): 3.3 - 6.4, mean 5.4 °C (based on 116 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00315 - 0.01154), b=3.12 (2.96 - 3.28), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.38 se; based on food items.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153
): High vulnerability (64 of 100).
Nutrients (Ref. 124155
): Calcium = 35.8 [4.9, 1,067.6] mg/100g ; Iron = 0.421 [0.037, 5.886] mg/100g ; Protein = 12.9 [10.9, 14.8] % ; Omega3 = 1.26 [0.27, 5.59] g/100g ; Selenium = 4.89 [0.54, 35.66] μg/100g ; VitaminA = 294 [9, 7,487] μg/100g ; Zinc = 1.6 [0.1, 18.3] mg/100g (wet weight); based on nutrient studies.