Élasmobranches (requins et raies) (sharks and rays) >
Myliobatiformes (Stingrays) >
Gymnuridae (Butterfly rays)
Etymology: Gymnura: Greek, gymnos = naked + Greek, oura = tail (Ref. 45335).
More on authors: Bloch & Schneider.
Taxonomic Remarks
Species complex include Gymnura lessae and
Gymnura sereti; distribution of and both species were included for Gymnura micrura. Distribution will be corrected.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin; saumâtre démersal; profondeur ? - 55 m (Ref. 27549). Deep-water
Southwestern Atlantic: Venezuela, including Trinidad and Tobago, to Brazil (Rio de Janeiro).
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm 35.0, range 34 - 50 cm
Max length : 137 cm WD mâle / non sexé; (Ref. 4439); common length : 90.0 cm WD mâle / non sexé; (Ref. 5217); poids max. publié: 0.00 g
Broad, diamond-shaped ray with a very short tail lacking a dorsal spine (Ref. 26938). Snout protruding. Front edges of disk concave. Tail with low dorsal and ventral finfolds and 3 - 4 dark crossbars (Ref. 7251). Upper surface gray, brown, light green or purple with round spots. Lower surface white (Ref. 6902).
Body shape (shape guide): other.
Prefers neritic waters of the continental shelf and
usually found on soft bottoms. May enter brackish
estuaries or hyper-saline lagoons (Ref. 5217). Feeds on
fish and shrimps (Ref. 28587); other crustaceans and clams
(Ref. 27549). Ovoviviparous (Ref. 50449). Generally
marketed salted (Ref. 5217).
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).
Yokota, L. and M.R. de Carvalho, 2017. Taxonomic and morphological revision of butterfly rays of Gymnura micrura (Bloch & Schneider, 1801) species complex, with the description of two new species (Myliobatiformes: Gymnuridae). Zootaxa 4332(1):1-74. (Ref. 116399)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: intérêt commercial mineur
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Sources Internet
Estimations basées sur des modèles
Température préférée (Réf.
123201): 21.8 - 27.9, mean 25 °C (based on 544 cells).
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00331 - 0.00870), b=3.09 (2.94 - 3.24), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Niveau trophique (Réf.
69278): 3.6 ±0.53 se; based on food items.
Résilience (Réf.
120179): Très faible, temps minimum de doublement de population supérieur à 14 ans (Fec=3).
Vulnérabilité de la pêche (Ref.
59153): Moderate vulnerability (43 of 100).
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Nutriments (Ref.
124155): Calcium = 7.1 [1.0, 38.4] mg/100g; Iron = 0.314 [0.067, 0.935] mg/100g; Protein = 21.9 [18.4, 24.9] %; Omega3 = 0.234 [0.058, 0.711] g/100g; Selenium = 8.65 [2.29, 27.32] μg/100g; VitaminA = 6.06 [1.19, 29.85] μg/100g; Zinc = 0.395 [0.196, 0.738] mg/100g (wet weight);