Élasmobranches (requins et raies) (sharks and rays) >
Myliobatiformes (Stingrays) >
Dasyatidae (Stingrays) > Dasyatinae
Eponymy: Thomas Say (1787–1834) was a self-taught American naturalist whose primary interest was entomology. [...] (Ref. 128868), visit book page.
More on author: Lesueur.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin; saumâtre démersal; profondeur 1 - 10 m (Ref. 55208), usually 1 - ? m (Ref. 55208). Subtropical; 45°N - 28°S, 95°W - 33°W (Ref. 55208)
Western Atlantic: New Jersey (rarely in Massachusetts), USA and northern Gulf of Mexico to Argentina; widespread in the West Indies. Throughout Antilles (Ref. 26938).
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm 55.0, range 50 - 60 cm
Max length : 104 cm WD mâle / non sexé; (Ref. 49746)
Moderate size, with a short blunt snout. Disk has rounded corners, few tubercles and spines along midline (Ref. 26938). Well developed fold on the upper surface and lower surface of tail. Yellowish or light brown above. Lower surface whitish or pure white (Ref. 6902).
Body shape (shape guide): other.
Inhabits coastal waters (Ref. 7251). Generally found near shore, to depths of 10 m. Both adults and juveniles frequent estuaries and surf zones (Ref. 27549). Bottom feeder with fish, clams, worms and shrimps. It causes a number of injuries to bathers and waders (Ref. 26938). Ovoviviparous (Ref. 50449). Litters of 2-4 pups; gestation 10-11 months, including a period of embryonic diapause (Ref. 114953).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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).
Compagno, L.J.V., 1999. Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland. (Ref. 35766)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Traumatogenic (Ref. 4716)
Utilisations par l'homme
Pêche sportive: oui
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Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 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). |
Niveau trophique (Réf. 69278) |
3.7 ±0.2 se; based on diet studies. |
Résilience (Réf. 120179) |
Faible, temps minimum de doublement de population : 4,5 à 14 années (Assuming fecundity<100). |
Vulnérabilité de la pêche (Ref. 59153) |
High to very high vulnerability (68 of 100). 🛈 |
Nutriments (Ref. 124155) |
Calcium = 26.4 [3.6, 122.6] mg/100g; Iron = 0.744 [0.197, 2.068] mg/100g; Protein = 23.9 [21.1, 26.5] %; Omega3 = 0.23 [0.06, 0.69] g/100g; Selenium = 12.5 [3.8, 37.8] μg/100g; VitaminA = 9.03 [3.46, 23.49] μg/100g; Zinc = 0.738 [0.357, 1.351] mg/100g (wet weight); |