Elasmobranchii (hajar och rockor) (sharks and rays) >
Rajiformes (Skates and rays) >
Arhynchobatidae (Softnose skates)
Etymology: Sympterygia: Greek, syn, symphysis = grown together + Greek, pteryx = fin (Ref. 45335).
More on author: Garman.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina bottenlevande; djupintervall 10 - 188 m (Ref. 57911). Subtropical; 20°S - 40°S, 60°W - 40°W (Ref. 57911)
Southwest Atlantic: Rio de Janeiro, Brazil to Rio de la Plata, Argentina.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 150 cm TL hane/ej könsbestämd; (Ref. 57911); common length : 36.0 cm WD hane/ej könsbestämd; (Ref. 26408)
Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Oviparous, 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
Mänskliga användningsområden
Fiskeri: kommersiell
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Önskad temperatur (Ref.
123201): 11.3 - 21.8, mean 19.5 °C (based on 65 cells).
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00398 (0.00260 - 0.00609), b=3.03 (2.91 - 3.15), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.7 ±0.55 se; based on food items.
Resiliens (Ref.
120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (Assuming fecundity<100).
Sårbarhet i fisket (Ref.
59153): Very high vulnerability (90 of 100).
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Näringsämnen (Ref.
124155): Calcium = 15.1 [3.0, 72.8] mg/100g; Iron = 0.658 [0.171, 1.913] mg/100g; Protein = 17.5 [14.7, 19.9] %; Omega3 = 0.401 [0.138, 1.492] g/100g; Selenium = 26 [8, 88] μg/100g; VitaminA = 7.9 [2.6, 23.9] μg/100g; Zinc = 0.562 [0.279, 1.023] mg/100g (wet weight);