Environment: milieu / climate zone / depth range / distribution range
Ecologia
marino demersale; distribuzione batimetrica 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.
Length at first maturity / Size / Peso / Age
Maturity: Lm 30.0, range 25 - 35 cm
Max length : 70.0 cm TL maschio/sesso non determinato; (Ref. 9563); common length : 35.0 cm TL maschio/sesso non determinato; (Ref. 3243); peso massimo pubblicato: 2.9 kg (Ref. 6390); Età massima riportata: 50 anni (Ref. 26998)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 17 - 18; Raggi dorsali molli (totale) : 25 - 28; Spine anali: 3; Raggi anali molli: 14 - 15; Vertebre: 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).
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)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Pesca: commerciale; Pesce da pesca sportiva: si
Strumenti
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 11.1 - 16, mean 14 °C (based on 71 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01288 (0.00970 - 0.01710), b=3.03 (2.95 - 3.11), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trophic level (Ref.
69278): 3.4 ±0.42 se; based on food items.
Resilienza (Ref.
120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (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.
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (50 of 100).
Climate Vulnerability (Ref.
125649): Low to moderate vulnerability (26 of 100).
Nutrients (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);
