Common names from other countries
Elasmobranquios (tiburones y rayas) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Amblyraja: Greek, amblys = darkness + Latin, raja, -ae = ray (Raja sp.) (Ref. 45335).
Eponymy: This is a toponym referring to the fact that the holotype was caught in the coastal waters of South Georgia and was named after that island. (Ref. 128868), visit book page.
More on author: Norman.
Environment: milieu / climate zone / rango de profundidad / distribution range
Ecología
marino batidemersal; rango de profundidad 20 - 350 m (Ref. 58839). Deep-water; 43°S - 74°S, 48°E - 23°W (Ref. 114953)
Southeast Pacific: Chile (Ref. 27540). Southern Ocean: around South Georgia Island and on the ridge westward towards Black Rocks. Occasionally seen on the Scotia Ridge.
Tamaño / Peso / Age
Madurez: Lm ? range ? - ? cm
Max length : 115 cm TL macho / no sexado; (Ref. 114953)
Found on continental and insular shelves, as well as upper slopes. Feeds mainly on small benthic invertebrates (Ref. 114953). Oviparous (Ref. 205). Reaches maturity at 80-90 cm TL; birth size at ca. 20 cm TL (Ref. 114953). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsule measures 116.5 mm long and 80.0 mm wide (Ref. 41249). Utilized as fishmeal and possibly not utilized for human consumption due to extreme roughness of its squamation (Ref. 5159).
Life cycle and mating behavior
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs have horn-like projections on the shell (Ref. 205).
McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Pesquerías: pesquerías de subsistencia
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Preferred temperature (Referencia
123201): -1.4 - 0.5, mean -0.6 °C (based on 28 cells).
Phylogenetic diversity index (Referencia
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00141 - 0.00645), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 4.2 ±0.3 se; based on size and trophs of closest relatives
Resiliencia (Referencia
120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Assuming tm>5).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (69 of 100).
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Climate Vulnerability (Ref.
125649): Moderate vulnerability (38 of 100).
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Nutrients (Ref.
124155): Calcium = 3.68 [0.60, 74.79] mg/100g; Iron = 0.312 [0.029, 4.166] mg/100g; Protein = 15.5 [13.4, 17.5] %; Omega3 = 0.393 [0.157, 0.959] g/100g; Selenium = 13.2 [2.4, 63.8] μg/100g; VitaminA = 6.56 [0.48, 84.64] μg/100g; Zinc = 0.219 [0.014, 2.548] mg/100g (wet weight);
