Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin démersal; profondeur 22 - 450 m (Ref. 58489), usually 100 - 250 m (Ref. 3243). Subtropical; 27°S - 48°S, 62°W - 176°W
Indo-Pacific: St. Paul and Amsterdam islands in the Indian Ocean, southern Australia, including Tasmania, and New Zealand. Southwest Atlantic: southern South America.
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm 30.0, range 25 - 35 cm
Max length : 70.0 cm TL mâle / non sexé; (Ref. 9563); common length : 35.0 cm TL mâle / non sexé; (Ref. 3243); poids max. publié: 2.9 kg (Ref. 6390); âge max. reporté: 50 années (Ref. 26998)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 17 - 18; Rayons mous dorsaux (Total) : 25 - 28; Épines anales: 3; Rayons mous anaux: 14 - 15; Vertèbres: 35. Adults have elongate upper pectoral-fin rays and are silvery with a broad black band from the nape to the pectoral-fin base (Ref. 33616).
Body shape (shape guide): fusiform / normal.
Adults demersal on the continental shelf and upper slope (Ref. 9563) to depths of 450 m (Ref. 33616). Juveniles tend to live near shallow reefs (Ref. 6390). Postlarvae inhabit offshore waters and are found in surface waters at night (Ref. 9072). Average weight is 1800 g. Feed on polychaete worms, crustaceans, mollusks and echinoderms (Ref. 28626). Flesh is quite good eating. Often sold as tiki fillets.
Jackass morwong have an extended pelagic postlarval stage (Ref. 6390). Research in New Zealand has shown that metamorphosis to the juvenile stage occurs between 9 and 12 months after hatching (Ref. 28625).
Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993. Australian fisheries resources. Bureau of Resource Sciences, Canberra, Australia. 422 p. (Ref. 6390)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: commercial; pêche sportive: oui
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Température préférée (Réf.
123201): 11.1 - 16, mean 14 °C (based on 71 cells).
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01288 (0.00971 - 0.01710), b=3.03 (2.95 - 3.11), in cm total length, based on LWR estimates for this species (Ref.
93245).
Niveau trophique (Réf.
69278): 3.4 ±0.42 se; based on food items.
Résilience (Réf.
120179): Très faible, temps minimum de doublement de population supérieur à 14 ans (K=0.1-0.28; tm=3-6; Fec=100,000; tmax=50).
Prior r = 0.27, 95% CL = 0.18 - 0.40, Based on 2 full stock assessments.
Vulnérabilité de la pêche (Ref.
59153): Moderate to high vulnerability (50 of 100).
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Vulnérabilité climatique (Ref.
125649): Low to moderate vulnerability (26 of 100).
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Nutriments (Ref.
124155): Calcium = 53.9 [34.9, 93.5] mg/100g; Iron = 0.942 [0.612, 1.486] mg/100g; Protein = 19.1 [17.3, 20.9] %; Omega3 = 0.381 [0.268, 0.531] g/100g; Selenium = 42.1 [24.0, 72.3] μg/100g; VitaminA = 9.17 [3.73, 21.69] μg/100g; Zinc = 0.658 [0.505, 0.900] mg/100g (wet weight);