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Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335); canutus: Name from Latin 'canutus' for grey or ash-coloured, refers to its almost uniformly grey dorsal coloration..
More on author: Last.

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

Marine; benthopelagic; depth range 330 - 730 m (Ref. 75648), usually 400 - 600 m (Ref. 75648). Temperate; 32°S - 45°S, 129°E - 154°E (Ref. 114953)

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Indo-west Pacific: Australia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 79.5 cm TL male/unsexed; (Ref. 75648); 90.4 cm TL (female)

Occurs mainly on the upper continental slope, but also known to be found at 155-1050 m depths (Ref. 114953). Adolescent males varied from 64.9 - 72.1 cm TL; smallest juvenile 13.4 cm TL. Egg cases described are about 9.3 - 10.7 cm long with a maximum width of about 5.1 - 5.7 cm (Ref. 75648).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

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

Last, P.R., 2008. New short-snout members of the skate genus Dipturus (Rajoidei: Rajidae) from Australian seas. pp. 53-98. In Last, P.R., W.T. White, J.J. Pogonoski and D.C. Gledhill (eds.): Descriptions of new Australian skates (Batoidea: Rajoidei) pg. 53-98. CSIRO marine and atmospheric research paper no. 021. (Ref. 75648)

IUCN Red List Status (Ref. 130435)

Endangered (EN) (A2bd); Date assessed: 20 February 2015

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

Preferred temperature (Ref. 123201): 2 - 10.3, mean 7.5 °C (based on 179 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00282 (0.00133 - 0.00596), b=3.25 (3.08 - 3.42), 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 vulnerability (56 of 100).

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Dipturus canutus Last, 2008