Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
marien demersaal; diepte 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.
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturiteit: Lm 30.0, range 25 - 35 cm
Max length : 70.0 cm TL mannelijk / geslacht onbekend; (Ref. 9563); common length : 35.0 cm TL mannelijk / geslacht onbekend; (Ref. 3243); max. gepubliceerd gewicht: 2.9 kg (Ref. 6390); max. gerapporteerde leeftijd: 50 Jaren (Ref. 26998)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 17 - 18; Dorsale zachte stralen (totaal) : 25 - 28; Anale stekels: 3; Anale zachte stralen: 14 - 15; Wervels: 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)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: commercieel; sportvis: ja
Tools
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Schattingen op basis van modellen
Gewenste temperatuur (Ref.
123201): 11.1 - 16, mean 14 °C (based on 71 cells).
Fylogenetische diversiteitsindex (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).
Trofisch niveau (Ref.
69278): 3.4 ±0.42 se; based on food items.
Weerstandsvermogen (Ref.
120179): Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (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.
Kwetsbaarheid van de visserij (Ref.
59153): Moderate to high vulnerability (50 of 100).
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Kwetsbaarheid voor het klimaat (Ref.
125649): Low to moderate vulnerability (26 of 100).
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Voedingsstoffen (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);