Élasmobranches (requins et raies) (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
Écologie
; marin bathydémersal; profondeur 304 - 520 m (Ref. 75649). Deep-water; 15°S - 19°S, 115°E - 122°E (Ref. 114953)
Eastern Indian Ocean: off north-western Australia.
Taille / Poids / Âge
Maturity: Lm ?  range ? - ? cm
Max length : 58.7 cm TL mâle / non sexé; (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
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 123251)
CITES (Ref. 118484)
Not Evaluated
Menace pour l'homme
Harmless
Utilisations par l'homme
Plus d'informations
Taille/ÂgeCroissanceLongueur-poidsLongueur-longueurFréquences de longueursMorphométrieMorphologieLarvesDynamique des populations larvairesRecrutementAbondance
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Estimates based on models
Preferred temperature (Ref.
115969): 8.7 - 11.8, mean 10.4 °C (based on 25 cells).
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00316 (0.00147 - 0.00681), b=3.22 (3.04 - 3.40), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 4.2 ±0.7 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (Preliminary K or Fecundity.).
Vulnérabilité (Ref.
59153): Moderate to high vulnerability (51 of 100) .