Elasmobranchii (haaien en roggen) (sharks and rays) >
Myliobatiformes (Stingrays) >
Potamotrygonidae (River stingrays) > Styracurinae
Etymology: Styracura: From Greek στυραξ (= (styrax), meaning "spine at the butt end of a spear" (Brown, 1954), and
ουρα (=oura) meaning tail, a suffix commonly used since Müller & Henle (1837) for whiptailed stingrays; referring to its greatly elongated caudal stings; schmardae: Named for Ludwig Karl Schmarda (23 August 1819-7 April 1908), zoologist, explorer and founder of the zoological museum of the University of Graz, and later professor in the Zoological Institute of the University of Vienna (1861-1883) (Ref. 112396).
Eponymy: Dr Ludwig Karl Schmarda (1819–1908) was an Austrian physician, naturalist and traveller. [...] (Ref. 128868), visit book page.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
marien demersaal. Tropical
Western Central Atlantic: Gulf of Campeche and the West Indies to Suriname (Ref. 3168); including Brazil (Ref. 53430). Validity of this species questioned in Compagno's 1999 checklist (Ref. 35766).
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 200 cm WD mannelijk / geslacht onbekend; (Ref. 5217); common length : 100.0 cm WD mannelijk / geslacht onbekend; (Ref. 5217)
Disc ovate, broadly rounded. Tails with blunt tubercles. Upper surface dark brown, sooty olive. Edges of disc darker. Lower surface of disc and pelvic fins yellowish or cream white. Teeth little darker than lower surface (Ref. 6902).
Body shape (shape guide): other.
Found on sandy bottoms, occasionally near coral reefs (Ref. 12951). Ovoviviparous (Ref. 50449). Marketed salted; also used in the preparation of gelatin and oil.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
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). Distinct pairing with embrace (Ref. 205).
Stehmann, M., J.D. McEachran and R. Vergara R., 1978. Dasyatidae. In W. Fischer (ed.) FAO species identification sheets for fishery purposes. Western Central Atlantic (Fishing Area 31). Vol. 1. [pag. var.]. FAO, Rome. (Ref. 3168)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gebruik door de mens
Visserij: van minder commercieel belang
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
Weerstandsvermogen (Ref. 120179) |
laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Assuming fecundity<100). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Very high vulnerability (90 of 100). 🛈 |
Prijsklasse (Ref. 80766) |
Low.
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Voedingsstoffen (Ref. 124155) |
Calcium = 13.6 [2.0, 252.8] mg/100g; Iron = 0.646 [0.057, 7.729] mg/100g; Protein = 20.6 [18.1, 23.2] %; Omega3 = 0.11 [0.03, 0.33] g/100g; Selenium = 53.9 [11.2, 288.5] μg/100g; VitaminA = 5.07 [0.40, 53.26] μg/100g; Zinc = 0.633 [0.037, 7.414] mg/100g (wet weight); |