Elasmobranchii (sharks and rays) > Myliobatiformes
(Stingrays) > Dasyatidae
Etymology: Dasyatis: Greek, dasys = rough, dense (Ref. 45335); margaritella: Named for the smaller size of this stingray and of its pearl (Latin: margarita) spine, as compared to Dasyatis margarita (Ref. 26277). More on author: Roberts.
Environment / Climate / Range
Marine; brackish; demersal. Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 30.0 cm TL male/unsexed; (Ref. 7397); max. published weight: 1.0 kg (Ref. 7397)
soft rays: 0. Disc oval, moderately flat, its medial lobe broad-based and moderately exserted, its anterior margin concave; middle third of disc covered with small heart-shaped or circular flat denticles, no enlarged thorns on disc or tail; snout moderately long, acutely pointed; pearl spines always present and moderately large (Ref. 26277). Total tooth rows 28-41/34-50; total pectoral radials 113-127 (Ref. 7397). Disc and pelvic fins gray-brown above, without spots or prominent markings, white below and without a marginal dark band (Ref. 26277).
Eastern Central Atlantic: off Cap Blanc to Angola. Often confused with Dasyatis margarita (Günther, 1870) (Ref. 7397).
Enters lagoons and estuaries (Ref. 7397). Ovoviviparous (Ref. 50449).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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).
Séret, B., 1990. Dasyatidae. p. 62-75. In C. Levêque, D. Paugy, and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres d'Afrique de l'Ouest Tome 1. Coll. Faune Tropicale n° 28. Musée Royal de l'Afrique Centrale, Tervuren, Belgique and O.R.S.T.O.M., Paris, France, 384 p. (Ref. 7397)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01202 (0.00492 - 0.02938), b=3.03 (2.81 - 3.25), based on LWR estimates for this (Sub)Family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Vulnerability (Ref. 59153
): Low vulnerability (16 of 100) .