Elasmobranchii (Haie und Rochen) (sharks and rays) >
Myliobatiformes (Stingrays) >
Gymnuridae (Butterfly rays)
Etymology: Gymnura: Greek, gymnos = naked + Greek, oura = tail (Ref. 45335).
More on author: Lowe.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
seewasser demersal. Subtropical
Eastern Central Atlantic: Madeira Islands. Southwest Atlantic: southern Brazil. Validity of this species questioned in Compagno's 1999 checklist (Ref. 35766).
Größe / Gewicht / Alter
Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 167 cm WD Männchen/unbestimmt; (Ref. 4439)
Holotype measured 167 cm WD (Ref. 4439). Ovoviviparous (Ref. 50449).
Lebenszyklus und Paarungsverhalten
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | 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).
McEachran, J.D. and B. Séret, 1990. Gymnuridae. p. 64-66. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 4439)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
Zusatzinformationen
Download XML
Internet Quellen
Schätzungen auf der Grundlage von Modellen
Phylogenetischer Diversitätsindex (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.00851 (0.00397 - 0.01825), b=3.08 (2.88 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trophische Ebene (Ref. 69278) |
3.8 ±0.6 se; based on size and trophs of closest relatives |
Widerstandsfähigkeit (Ref. 120179) |
sehr niedrig, Verdopplung der Population dauert mehr als 14 Jahre. (Fec assumed to be <10). |
Anfälligkeit der Fischerei (Ref. 59153) |
Moderate vulnerability (43 of 100). 🛈 |