Elasmobranchii (hajar och rockor) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Amblyraja: Greek, amblys = darkness + Latin, raja, -ae = ray (Raja sp.) (Ref. 45335).
Eponymy: Professor Martin Doello-Jurado (1884–1948) was a marine biologist and malacologist, who was also interested in palaeontology. [...] (Ref. 128868), visit book page.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina bottenlevande; djupintervall 50 - 640 m (Ref. 114953). Subtropical; 35°S - 57°S, 78°W - 53°W (Ref. 114953)
Southeast Pacific: Chile (Ref. 27540, Ref. 114953). Southwest Atlantic: off Argentina (Ref. 26282) and Uruguay, including Falkland Islands (Ref. 58839, Ref. 114953).
Storlek / Vikt / Ålder
Könsmognad: Lm ? range ? - ? cm
Max length : 69.0 cm TL hane/ej könsbestämd; (Ref. 114953)
Found on mid- and outer continental shelf and upper slope, occasionally caught deeper to 1000 m. Mainly feeds on benthic invertebrates and small bony fishes (Ref. 114953). Oviparous. 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 86.4 mm long and 56.2 mm wide (Ref. 41249). Hatches from egg case at ca. 9 cm TL (Ref. 114953).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
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Uppskattningar baserade på modeller
Önskad temperatur (Ref.
123201): 4.5 - 9, mean 7.3 °C (based on 65 cells).
Index för fylogenetisk mångfald (Ref.
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).
Trofisk nivå (Ref.
69278): 4.1 ±0.2 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (Fec assumed to be <100).
Sårbarhet i fisket (Ref.
59153): Moderate to high vulnerability (48 of 100).
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