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Rhinoptera bonasus (Mitchill, 1815)

Cownose ray
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Native range | All suitable habitat | Point map | Year 2050
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Rhinoptera bonasus   AquaMaps   Data sources: GBIF OBIS
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Image of Rhinoptera bonasus (Cownose ray)
Rhinoptera bonasus
Picture by Schneider, O.


Suriname country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Collected between 9.15 and 21.96 m depth during an exploratory fishing expedition in 1967; noted as scarce at this depth range (Ref. 26912). Also Ref. 5217, 13608.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ns.html
National Fisheries Authority: http://www.caricom-fisheries.com/suriname
Occurrences: Occurrences Point map
Main Ref: Gines, H. and F. Cervigón, 1967
National Database:

Common names from other countries

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

Élasmobranches (requins et raies) (sharks and rays) > Myliobatiformes (Stingrays) > Rhinopteridae (Cownose rays)
Etymology: Rhinoptera: Greek, rhinos = nose + Greek,pteron = fin, wing (Ref. 45335).
  More on author: Mitchill.

Environment: milieu / climate zone / depth range / distribution range Écologie

marin; saumâtre benthopélagique; océanodrome (Ref. 51243); profondeur 0 - 22 m (Ref. 26912).   Tropical; 46°N - 42°S, 98°W - 33°W

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Western Atlantic: from New England (USA) to northern Argentina (Ref. 114953); including northern Florida (USA), throughout the Gulf of Mexico, migrating to Trinidad, Venezuela, Brazil and Uruguay (Ref. 7251).

Length at first maturity / Taille / Poids / Âge

Maturity: Lm 65.3, range 62 - ? cm
Max length : 120 cm WD mâle / non sexé; (Ref. 5217); poids max. publié: 953.00 g (Ref. 118626)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Deep grove around front of head below eyes; forehead above groove indented, snout below groove is distinctly bilobed (Ref. 26938). Disk brown to olive above, with no spots or marks, wings long and pointed (Ref. 7251). Lower surface white or yellowish white (Ref. 6902).

Biologie     Glossaire (ex. epibenthic)

A benthopelagic species found on continental and insular shelves; enters bays and estuaries; forms huge schools inshore (Ref. 114953). Feeds mainly on benthic invertebrates and molluscs (implicated in damaging seagrass beds) (Ref. 93252, 114953). Jumps occasionally, landing with a loud smack, probably as a territorial display. Migrates south in large schools that disappear off northern Florida, USA and are not reported from Caribbean Is.; tagged fish have been recovered in northern South America (Ref. 7251). Population in the Gulf of Mexico migrates clockwise; schools of up to 10,000 rays leave west coast of Florida for Yucatan, Mexico in the fall (Ref. 7251). Ovoviviparous (Ref. 50449).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | 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).

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Last, P.R., W.T. White, M.R. de Carvalho, B. Séret, M.F.W. Stehmann and G.J.P. Naylor, 2016. Rays of the world. CSIRO Publishing, Comstock Publishing Associates. i-ix + 1-790. (Ref. 114953)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

  Vulnérable, voir Liste Rouge IUCN (VU) (A2bd); Date assessed: 21 June 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Traumatogenic (Ref. 4690)




Utilisations par l'homme

Pêcheries: intérêt commercial mineur; Aquarium: Aquariums publics
FAO(Publication : search) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 20 - 28.1, mean 26.7 (based on 643 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01202 (0.00693 - 0.02085), b=2.98 (2.82 - 3.14), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Niveau trophique (Ref. 69278):  3.2   ±0.0 se; based on diet studies.
Résilience (Ref. 120179):  Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  High vulnerability (59 of 100).
Catégorie de prix (Ref. 80766):   Medium.