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Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335); lamillai: Named for Julio Lamilla, a Chilean biologist who devoted his life to teaching and research primarily on the biology and conservation of chondrichthyans, especially batoids..

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal; depth range 162 - 515 m (Ref. 120403). Deep-water

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Southwestern Atlantic: Falkland is.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 94.2 cm TL male/unsexed; (Ref. 120403); 114.0 cm TL (female)

Short description Morphology | Morphometrics

This medium-sized species of Dipturus (at least to 107.0 cm TL) is distinguished from its congeners by the following set of characters: dorsal surface of body is medium brownish with lighter spots and reticulations ranging from simple (holotype) to complex pattern (female paratype); ocellus in the center of each pectoral fin reticulated, but the margins not well defined; body, dusky grey ventrally, with light patches around mouth, gills, pelvic girdle, and cloaca; area flanking the rostral cartilage membranous and barely translucent; disc relatively broad with angular apices, its width 75.2 (73.2; 78.9) % TL; snout elongated; in males, the tail is longer than in female paratype, 38.4 (37.9) % TL and 35.1% TL, respectively; ventral head length 36.3 (35.0; 32.7) % TL; pre-orbital snout length 3.2 (3.1; 3.5) times distance between orbits; the orbit diameter 0.4 (0.6; 0.4) times inter-orbital width; in males, the dorsal surface of disc with scattered and thick dermal denticles over rostral cartilage, small fine dermal denticles on pre- and post-orbit, thin band of dermal denticles on anterior margins of dorsal fins and anterior margins of disc and from tip of snout to anterior margin of alar thorn patches, thin band of dermal denticles on anterior margins of dorsal fins; in females, dorsal surface of head and anterior margins of disc with small dermal denticles, a narrow patch of dermal denticles on medial-dorsal area between girdles, narrow band on anterior margins of dorsal fins; both sexes with orbital thorns, single nuchal thorn, no scapular thorns, a median row of small caudal thorns, single row of lateral thorns on each side of tail (mostly at anterior part of tail in males and all along tail in female paratype), an additional row of small and posteriorly directed thorns above lateral tail fold, and only adult males with malar and alar thorns; ventral sensory pores are small, distinct, black-edged, not surrounded by greyish blotches, more abundant anteriorly to gill openings, scarce on abdominal area (Ref. 120403).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : McEachran, John | Collaborators

Concha, F.J., J. Caira, D.A. Ebert and J.H.W. Pomperi, 2019. Redescription and taxonomic status of Dipturus chilensis (Guichenot, 1848), and description of Dipturus lamillai sp. nov. (Rajiformes: Rajidae), a new species of long-snout skate from the Falkland Islands. Zootaxa 4590(5):501-524. (Ref. 120403)

IUCN Red List Status (Ref. 125652)

Least Concern (LC) ; Date assessed: 15 July 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00302 (0.00138 - 0.00659), b=3.23 (3.06 - 3.40), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.9 ±0.6 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): High to very high vulnerability (68 of 100).

Dipturus lamillai Concha, Caira, Ebert & Pompert, 2019