Elasmobranchii (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
Environment / Climate / Range
Ecology
Marine; demersal; depth range 35 - 300 m (Ref. 28023), usually 35 - 140 m (Ref. 9261). Deep-water, preferred ?
Eastern Pacific: Gulf of California and Costa Rica to Colombia and Peru.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 83.0 cm TL male/unsexed; (Ref. 96339); common length : 60.0 cm TL male/unsexed; (Ref. 9261)
Benthic on the continental shelf. Feed on crustaceans, polychaetes and fishes (Ref. 28023). 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).
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
Age/SizeGrowthLength-weightLength-lengthLength-frequenciesMorphometricsMorphologyLarvaeLarval dynamicsRecruitmentAbundance
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=0.00288 (0.00127 - 0.00656), b=3.21 (3.03 - 3.39), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic Level (Ref.
69278): 3.6 ±0.53 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): Moderate to high vulnerability (54 of 100) .