Élasmobranches (requins et raies) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Leucoraja: Greek, leykos = white + Latin, raja = a fish, Raja sp. (Ref. 45335); longirostris: Name from Latin 'longus' = long and 'rostrum' = stiff snout; referring to the distinct long and pointed snout.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin bathydémersal; profondeur 750 - 1050 m (Ref. 131089). Tropical
Distribution
Territoires | Zones FAO | Écosystèmes | Occurrences | Carte par point | Introductions | Faunafri
Western Indian Ocean: southern end of the Madagascar Ridge at Walters Shoals.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 71.1 cm TL mâle / non sexé; (Ref. 131089); 70.0 cm TL (female)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
The species is distinguished from all its congeners by its remarkably long and acutely angled
snout, with horizontal preorbital length 17.2-–22.6% TL (vs. 8.5-11.9% TL) and 4.2-6.1 (vs. 1.7-3.5) times orbit length, snout angle 65-85? (vs. 90-150?); with plain dorsal coloration; with an external clasper component dike; with four dorsal terminal (dt) cartilages (Ref. 131089).
Cross section: flattened.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Weigmann, S., M.F.W. Stehmann, B. Séret and H. Ishihara, 2024. Description of a remarkable new skate species of Leucoraja Malm, 1877 (Rajiformes, Rajidae) from the Southwestern Indian Ocean: introducing 3D modeling as an innovative tool for the visualization of clasper characters. Biology 13:1-46. (Ref. 131089)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: bycatch
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00339 (0.00168 - 0.00682), b=3.25 (3.08 - 3.42), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Niveau trophique (Réf. 69278) |
3.6 ±0.2 se; based on size and trophs of closest relatives |
Résilience (Réf. 120179) |
Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (Preliminary K or Fecundity.). |
Vulnérabilité de la pêche (Ref. 59153) |
Moderate to high vulnerability (48 of 100). 🛈 |