Elasmobranchi (squali e razze) (sharks and rays) >
Squatiniformes (Angel sharks) >
Squatinidae (Angel sharks)
Etymology: Squatina: Latin for skate, which angel sharks superficially resemble, presumably tautonymous with Squalus squatina Linnaeus 1758 (no species mentioned) (See ETYFish); argentina: Presumably named for Argentina, described from off the coast of Buenos Aires (the province, not the city) (See ETYFish).
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino demersale; distribuzione batimetrica 100 - 400 m (Ref. 57911). Subtropical; 19°S - 53°S, 68°W - 38°W (Ref. 54901)
Southwest Atlantic: Brazil to southern Uruguay.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - 120 cm
Max length : 170 cm TL maschio/sesso non determinato; (Ref. 247); common length : 100.0 cm TL maschio/sesso non determinato; (Ref. 6077)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
This species is distinguished from its congeners by having a darker background color, ranging from dark-brown to reddish-brown (vs. light-brown to dark-brown in S. guggenheim and S. occulta), with higher number of tooth rows with 24 vertical tooth rows in both upper and lower jaws, tooth formula 12-12/12-12; (vs. 9-9 to 10-10/9-9 to 11-11 in S. occulta, and 9-9 to 11-11/9-9 to 11-11 in S. guggenheim), and with anterior half of pectoral fin margin convex (vs. anterior margin of pectoral fin straight); differs from S. guggenheim and S. occulta with the interspiracular surface covered by small and homogeneous dorsal denticles, without enlarged denticles (vs. a pair of enlarged, conical and morphologically distinct dermal denticles between spiracles in S. occulta and S. guggenheim); differs from S. occulta by lacking blackish irregular small spots surrounding white spots on dorsal surface (i.e. absence of ocelli-like markings); differs further from S. guggenheim by having the dorsal midline denticles on trunk morphologically similar to other trunk denticles and barely organized in a row (vs. dorsal midline row of enlarged denticles morphologically distinct from other trunk denticles), the denticles close to origin of pectoral fin morphologically homogeneous, similar to other pectoral denticles (vs. presence of a pair, or more, enlarged and morphologically distinct denticles from other pectoral denticles, in S. guggenheim) (Ref. 95520).
Cross section: angular.
Found on the continental shelf and slope. Ovoviviparous (Ref. 50449).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Ovoviviparous, embryos feed solely on yolk (Ref. 50449). Both ovaries are functional (Ref. 57911).
Vaz, D.F.B. and M.R. De Carvalho, 2013. Morphological and taxonomic revision of species of Squatina from the Southwestern Atlantic Ocean (Chondrichthyes: Squatiniformes: Squatinidae). Zootaxa 3695(1):001-081. (Ref. 95520)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Traumatogenic
Usi umani
Pesca: pesca di sussistenza
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00661 (0.00285 - 0.01530), b=3.07 (2.88 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
4.1 ±0.6 se; based on diet studies. |
Resilienza (Fonte Biblio. 120179) |
Molto basso, tempo minimo di raddoppiamento della popolazione più di 14 anni (Fec 7-11). |
Vulnerabilità della pesca (Ref. 59153) |
Very high vulnerability (77 of 100). 🛈 |
Vulnerabilità climatica (Ref. 125649) |
High to very high vulnerability (71 of 100). 🛈 |
Categoria di prezzo (Ref. 80766) |
High.
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Nutrienti (Ref. 124155) |
Calcium = 8.08 [1.10, 152.92] mg/100g; Iron = 0.689 [0.065, 8.563] mg/100g; Protein = 18.4 [16.3, 20.6] %; Omega3 = 0.288 [0.108, 0.796] g/100g; Selenium = 34.1 [6.7, 171.6] μg/100g; VitaminA = 5.73 [0.45, 68.92] μg/100g; Zinc = 0.355 [0.021, 4.093] mg/100g (wet weight); |