Common names from other countries
Élasmobranches (requins et raies) (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.
Environment: milieu / climate zone / depth range / distribution range
Écologie
marin démersal; profondeur 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.
Taille / Poids / Âge
Maturity: Lm ?  range ? - ? cm
Max length : 150 cm TL mâle / non sexé; (Ref. 57911); common length : 36.0 cm WD mâle / non sexé; (Ref. 26408)
Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-2)
CITES (Ref. 131153)
Not Evaluated
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: commercial
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Preferred temperature (Ref.
115969): 11.3 - 21.8, mean 19.5 (based on 65 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00398 (0.00264 - 0.00601), b=3.02 (2.90 - 3.14), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Niveau trophique (Ref.
69278): 3.7 ±0.55 se; based on food items.
Résilience (Ref.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).