Elasmobranchii (sharks and rays) > Rajiformes
(Skates and rays) > Arhynchobatidae
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 130 - 434 m (Ref. 27092). Temperate; 33°S - 57°S, 75°W - 52°W
Southeast Pacific: Guamblín Island, Chile. Southwest Atlantic: Patagonia, Argentina and the Falkland Islands. Also Uruguay (Ref. 58429).
Length at first maturity / Size / Weight / Age
Maturity: Lm 65.3  range ? - ? cm
Max length : 14.4 cm TL male/unsexed; (Ref. 27092)
Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Mature gonads are symmetrical in terms of mass, and similar in ovarian follicle number and size (Ref. 58429). Egg laying possibly throughout the year (Ref. 58429).
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. 115185)
CITES (Ref. 115941)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 4.1 - 7.8, mean 5.7 (based on 44 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00241 - 0.00995), b=3.13 (2.96 - 3.30), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.8 ±0.52 se; Based on food items.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Vulnerability (Ref. 59153
): Low vulnerability (24 of 100) .