Elasmobranchii (sharks and rays) >
Rajiformes (Skates and rays) >
Arhynchobatidae (Skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335).
Environment / Climate / Range
Ecology
Marine; brackish; bathydemersal; depth range 58 - 1054 m (Ref. 80796). Deep-water, preferred ?
Northwest Pacific: Bering Sea and Aleutian Islands (unconfirmed report from the Gulf of Alaska); to Pacific coast of Kamchatka and northern Kuril Is.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 70.0 cm TL male/unsexed; (Ref. 555); 62.3 cm TL (female)
Holotype taken from a depth between 405-420 m (Ref. 26282). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 6.7 cm long and 4.7 cm wide (Ref. 41249).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (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. 115185)
CITES (Ref. 94142)
Not Evaluated
Threat to humans
Harmless
Human uses
More information
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00222 - 0.00594), b=3.09 (2.95 - 3.23), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic Level (Ref.
69278): 3.9 ±0.7 se; Based on size and trophs of closest relatives
Resilience (Ref.
69278): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Prior r = 0.15, 2 SD range = 0.03 - 0.74, log(r) = -1.9, SD log(r) = 0.8, Based on: 1 K, 1 tmax, 1 Fec records
Vulnerability (Ref.
59153): Moderate to high vulnerability (52 of 100) .