Elasmobranchii (sharks and rays) > Rajiformes
(Skates and rays) > Rajidae
Etymology: Dactylobatus: Greek, daktyleys, -eos = a kind of grey mullet + Greek, batis = a kind of ray (Ref. 45335).
Environment / Climate / Range
Marine; bathydemersal; depth range 475 - 1000 m (Ref. 28767). Deep-water
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 59.0 cm TL male/unsexed; (Ref. 13608); 69.0 cm WD (female)
Western Central Atlantic: northern Gulf of Mexico (Ref. 13608) and northern coast of South America (Ref. 5217).
Inhabits mud-bottom habitat on the upper slope, generally in waters deeper than 350 meters. Stomach contents include one specimen of Mullus argentinae, remains of a teleost fish and predominance of Myctophidae fishes. Sympatric with other chondrichthyans, Etmopterus bigelowi, Squalus aff. blainvillei, and Dipturus leptocauda (Ref. 56543). Oviparous (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. 90363)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00309 (0.00141 - 0.00678), b=3.23 (3.05 - 3.41), based on LWR estimates for this Subfamily-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.5 ±0.80 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 to moderate vulnerability (28 of 100) .