Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino; salmastro associati a barriera corallina; distribuzione batimetrica 0 - 53 m (Ref. 13608), usually ? - 4 m (Ref. 55205). Subtropical; 36°N - 4°S, 100°W - 37°W (Ref. 55205)
Western Atlantic: New Jersey, USA and northern Gulf of Mexico to southern Brazil, including the Antilles (Ref. 3168).
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: Lm 81.3, range 75 - 80 cm
Max length : 200 cm WD maschio/sesso non determinato; (Ref. 3168); common length : 90.0 cm WD maschio/sesso non determinato; (Ref. 3168); peso massimo pubblicato: 135.6 kg (Ref. 40637); Età massima riportata: 28 anni (Ref. 53968)
Disk has sharp outer corners and irregular row of short spines on upper surface (Ref. 26938). Disk usually uniform dark brown above, grayer in young. Ventral finfold on tail long and high, dorsal finfold absent (Ref. 7251). Upper surface of disc gray, dark or olivaceous brown or olive green. Lower surface of disc white or whitish with an edging of gray or brown (Ref. 6902).
Body shape (shape guide): other.
Found on sandy bottoms, seagrass beds, lagoons and the reef face (Ref. 12951). Common in bays and estuaries (Ref. 7251), and in mangrove areas (Ref. 138854). Observed singly, in pairs and in aggregations (Ref. 12951). Buries in the sand during the day and forages at night, usually in seagrass beds (Ref. 12951). Feeds mainly on bivalves and worms and also takes shrimps, crabs and small fishes (Ref. 3168). Feeds by creating depressions in the sand to expose invertebrates and small fishes (Ref. 9710). Ovoviviparous, with 3-4 in a litter (Ref. 12951). May be found in cleaning stations where they are attended to by the bluehead wrasse and Spanish hogfish (Ref. 12951). Equipped with a well-developed serrated spine and capable of inflicting a painful laceration. Easily approached by divers (Ref. 9710).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Distinct pairing with embrace (Ref. 205). Male mounts on female dorsally (Ref. 12951).
Last, P.R., W.T. White, M.R. de Carvalho, B. Séret, M.F.W. Stehmann and G.J.P. Naylor, 2016. Rays of the world. CSIRO Publishing, Comstock Publishing Associates. i-ix + 1-790. (Ref. 114953)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Traumatogenic (Ref. 4690)
Usi umani
Pesca: commerciale; Pesce da pesca sportiva: si
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00447 (0.00189 - 0.01053), b=3.12 (2.92 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.5 ±0.0 se; based on diet studies. |
Resilienza (Fonte Biblio. 120179) |
Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (tmax=28; Fec=3-4). |
Vulnerabilità della pesca (Ref. 59153) |
Very high vulnerability (77 of 100). 🛈 |
Categoria di prezzo (Ref. 80766) |
Low.
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Nutrienti (Ref. 124155) |
Calcium = 5.41 [0.65, 23.15] mg/100g; Iron = 0.355 [0.083, 0.950] mg/100g; Protein = 24.6 [21.7, 27.3] %; Omega3 = 0.145 [0.039, 0.464] g/100g; Selenium = 13.9 [4.1, 41.6] μg/100g; VitaminA = 19.8 [6.4, 64.3] μg/100g; Zinc = 0.592 [0.287, 1.207] mg/100g (wet weight); |