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Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: healdi: Named for David Heald, Department of Fisheries Western Australia..
More on authors: Last, White & Pogonoski.

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

Marine; bathydemersal; depth range 304 - 520 m (Ref. 75649). Deep-water; 15°S - 19°S, 115°E - 122°E (Ref. 114953)

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

Eastern Indian Ocean: off north-western Australia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 58.7 cm TL male/unsexed; (Ref. 75649); 72.3 cm TL (female)

Inhabits upper continental slope (Ref. 114953). Length of adolescent males between 38.0-50.6 cm TL, smallest juvenile 13.8 cm TL (Ref. 75649).

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., W.T. White and J.J. Pogonoski, 2008. New skates of the genus Dipturus (Rajoidei: Rajidae) from Australian Seas. pp. 9-52. In Last, P.R., W.T. White, J.J. Pogonoski and D.C. Gledhill (eds.): Descriptions of new Australian skates (Batoidea: Rajoidei) pg. 9-51. CSIRO marine and atmospheric reseach paper no. 021. (Ref. 75649)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 25 April 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Trophic ecology
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Ecology
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Anatomy
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Internet sources

Estimates based on models

Preferred temperature (Ref. 123201): 8.7 - 11.8, mean 10.4 °C (based on 25 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00302 (0.00141 - 0.00645), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.2 ±0.7 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Preliminary low fecundity).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (49 of 100).

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