Taxonomic Remarks
The genus Pseudotrematomus is a synonym of Trematomus, which is confirmed by a molecular study to be published (J.-C. Hureau, pers. comm. 08 Jun. 2010).
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
marino demersal; rango de profundidad 70 - 650 m (Ref. 26875). Polar; 60°S - 78°S
Southern Ocean: continental shelf of Antarctica and nearby islands, including the South Orkney.
Longitud en la primera madurez / Tamaño / Peso / Edad
Madurez: Lm 22.0, range 19 - 26 cm
Max length : 34.5 cm TL macho / no sexado; (Ref. 87549)
Espinas dorsales (total) : 6 - 7; Radios blandos dorsales (total) : 36 - 38; Espinas anales: 0; Radios blandos anales: 34 - 36; Vértebra: 54 - 57. Second dorsal-fin rays 0-3 more than anal-fin rays. Preopercular-mandibular canal with 10 pores; infraorbital canal with 6-8 pores; supra-orbital canal with 4 pores; coronal commissure with a single median pore; temporal canal with 5-6 pores; supratemporal canal complete wit 3 pores. Body and head almost entirely scaled, including snout, preorbitals, posterior part of maxilla, lower jaw, isthmus, branchiostegal membranes and proximal parts of branchiostegal rays.
Color: In alcohol, ground color buff, with a chequered pattern formed by staggered dark blotches along the dorsal, lateral and ventral parts of the body; ventral dark blotches may appear as short wavy horizontal dark marks. Snout, occipital region and sometimes interorbital area are dark.
Body shape (shape guide): fusiform / normal.
Most common in shallower waters of the continental shelf, especially on banks less than 250 m deep in areas where local upwellings increase food supply (Ref. 6390). Juveniles are found near the surface, often in association with Antarctic krill (Euphausia superba) swarms. Feed on salps, nudibranchs, amphipods, copepods, polychaetes, krill, crustaceans, chaetognaths, and fish (Ref. 6390). According to FAO statistics, significant catch was reported only in the years 1988 to 1991
Mature females may spawn for the first time from around 7-9 years of age (Ref. 71843).
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)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: comercial
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 82804) |
PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00490 (0.00334 - 0.00717), b=3.26 (3.14 - 3.38), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
Nivel trófico (Referencia 69278) |
3.4 ±0.1 se; based on diet studies. |
Resiliencia (Referencia 120179) |
Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Fec = 1,400-12,854). |
Vulnerabilidad pesquera (Ref. 59153) |
Moderate to high vulnerability (52 of 100). 🛈 |
Vulnerabilidad climática (Ref. 125649) |
High to very high vulnerability (66 of 100). 🛈 |
Categoría de precios (Ref. 80766) |
High.
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Nutrientes (Ref. 124155) |
Calcium = 26.8 [16.2, 66.0] mg/100g; Iron = 0.498 [0.197, 0.983] mg/100g; Protein = 17.1 [16.1, 18.2] %; Omega3 = 0.384 [0.215, 0.659] g/100g; Selenium = 15.5 [6.7, 34.6] μg/100g; VitaminA = 22.2 [4.9, 102.6] μg/100g; Zinc = 0.473 [0.314, 0.718] mg/100g (wet weight); based on nutrient studies. |