Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
seewasser demersal; tiefenbereich 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.
Länge bei der ersten Reifung / Größe / Gewicht / Alter
Geschlechtsreife: Lm 30.0, range 25 - 35 cm
Max length : 70.0 cm TL Männchen/unbestimmt; (Ref. 9563); common length : 35.0 cm TL Männchen/unbestimmt; (Ref. 3243); max. veröff. Gewicht: 2.9 kg (Ref. 6390); max. veröff. Alter: 50 Jahre (Ref. 26998)
Rückenflossenstacheln (insgesamt) : 17 - 18; Rückenflossenweichstrahlen (insgesamt) : 25 - 28; Afterflossenstacheln: 3; Afterflossenweichstrahlen: 14 - 15; Wirbelzahl: 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)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: kommerziell; Sportfisch: ja
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Schätzungen auf der Grundlage von Modellen
Bevorzugte Temperatur (Ref.
123201): 11.1 - 16, mean 14 °C (based on 71 cells).
Phylogenetischer Diversitätsindex (Ref.
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).
Trophische Ebene (Ref.
69278): 3.4 ±0.42 se; based on food items.
Widerstandsfähigkeit (Ref.
120179): sehr niedrig, Verdopplung der Population dauert mehr als 14 Jahre. (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.
Anfälligkeit der Fischerei (Ref.
59153): Moderate to high vulnerability (50 of 100).
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Klimaanfälligkeit (Ref.
125649): Low to moderate vulnerability (26 of 100).
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Nährstoffe (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);