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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.
Περιβάλλον: περιβάλλον / κλιματική ζώνη / εύρος βάθους / εύρος διανομής
Οικολογία
Θαλασσινό(ά); Υφάλμυρο βενθικό(ς); εύρος βάθους 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).
Μήκος κατά την πρώτη ωρίμανση / Μέγεθος / Βάρος / Ηλικία
Γεννητική Ωρίμανση: Lm 55.0, range 50 - 60 cm
Max length : 104 cm WD αρσενικό/απροσδιόριστο; (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).
Κύκλος ζωής και συμπεριφορά ζευγαρώματος
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
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)
Κατάσταση Κόκκινου Καταλόγου IUCN (Ref. 130435: Version 2025-2 (Global))
Απειλή για τον άνθρωπο
Traumatogenic (Ref. 4716)
Ανθρώπινες χρήσεις
αλιεία αναψυχής: ναί
Εργαλεία
Ειδικές εκθέσεις
Λήψη XML
Διαδικτυακές πηγές
Εκτιμήσεις βάσει μοντέλων
Δείκτης φυλογενετικής ποικιλότητας (Αναφ. 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). |
Τροφικό Επίπεδο (Αναφ. 69278) |
3.7 ±0.2 se; based on diet studies. |
Ελαστικότητα (Αναφ. 120179) |
Χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού 4,5 - 14 έτη (Assuming fecundity<100). |
Ευπάθεια στην αλιεία (Ref. 59153) |
High to very high vulnerability (68 of 100). 🛈 |
Θρεπτικά συστατικά (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); |