Environment: milieu / climate zone / depth range / distribution range
Écologie
marin bathypélagique; profondeur 400 - 1500 m (Ref. 127764). Deep-water
Southern Ocean: islands of the Scotia Sea, Weddell Sea, Prydz Bay and the Ross Sea. A separate subspecies may be present in the Ross Sea population, but this needs more evidence (Ref. 5179). Reported from Olaf Prydz Bay, Mackenzie Sea, Indian sector of the Antarctic (Ref. 44178).
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 44.3 cm TL mâle / non sexé; (Ref. 124149); 33.6 cm TL (female); poids max. publié: 563.60 g (Ref. 124149)
Épines dorsales (Total) : 7; Rayons mous dorsaux (Total) : 34; Rayons mous anaux: 30. Gray with violet hue and lighter below with metallic luster. In alcohol, purplish gray or light brown dorsally (Ref. 11892).
Feeds on zooplankton. The storage of lipids in cells of adipose tissue as well as the reduced calcification of the skeleton provide buoyancy to this species.
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Dewitt, H.H., P.C. Heemstra and O. Gon, 1990. Nototheniidae. p. 279-331. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. (Ref. 5179)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-1)
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Outils
Articles particuliers
Télécharger en XML
Sources Internet
Estimates based on models
Preferred temperature (Ref.
123201): -0.2 - 1.2, mean 0.9 °C (based on 21 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00330 - 0.00835), b=3.11 (2.97 - 3.25), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Niveau trophique (Ref.
69278): 3.4 ±0.45 se; based on food items.
Generation time: 27.5 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Résilience (Ref.
120179): Très faible, temps minimum de doublement de population supérieur à 14 ans (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (68 of 100).
