Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin; eau douce; saumâtre démersal; profondeur 0 - 100 m (Ref. 6871). Tropical; 28°N - 32°S, 76°E - 165°E (Ref. 114953)
Indo-West Pacific: Thailand to New Guinea and the Solomon Islands, south to Australia. Records from the south coast of India, Sri Lanka, Bangladesh, and Myanmar need confirmation.
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm 165.0, range 150 - 180 cm
Max length : 270 cm TL mâle / non sexé; (Ref. 9909)
Occurs inshore and offshore, from the intertidal to offshore continental and insular shelves (Ref. 9909). Young individuals are found inshore on sand flats, around atolls, and in mangrove swamps, estuaries and coastal lagoons (Ref. 6871). Adults occur inshore, over continental shelf, to ~100 m deep, and also the only rhinobatid reportedly able to live and breed in freshwater (Ref. 6871, 127960). Feeds on shellfish, mainly on crustaceans, prawns and crabs (Ref. 9909, Ref. 114953) and also small bony fishes (Ref. 127960). Ovoviviparous (Ref. 50449). Maturity size at 150-180 cm TL; born at 38-40 cm TL (Ref. 114953). Probably the major commercial guitarfish in the Western Central Pacific (Ref. 9909). Caught regularly by demersal tangle net fisheries operating throughout the area. Utilized for its meat, fins (both very high value), skin and cartilage (Ref. 58048). Reported to attain a maximum length of 4 m (Ref. 58784).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Born at 38-40 cm TL (Ref.58048).
Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Utilisations par l'homme
Pêcheries: intérêt commercial mineur; Aquarium: Commercial
Outils
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00389 (0.00140 - 0.01084), b=3.05 (2.82 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Niveau trophique (Réf. 69278) |
3.6 ±0.50 se; based on food items. |
Résilience (Réf. 120179) |
Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec assumed to be <100). |
Vulnérabilité de la pêche (Ref. 59153) |
High vulnerability (61 of 100). 🛈 |
Catégorie de prix (Ref. 80766) |
Low.
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