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Potamotrygon motoro (Müller & Henle, 1841)

South American freshwater stingray
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Potamotrygon motoro
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Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

Élasmobranches (requins et raies) (sharks and rays) > Myliobatiformes (Stingrays) > Potamotrygonidae (River stingrays) > Potamotrygoninae
Etymology: Potamotrygon: Greek, potamos = river + Greek, trygon = a sting ray (Ref. 45335).
More on authors: Müller & Henle.

Issue
Authorship of species is credited to Müller & Henle (1841) and not Naterrer (who collected the type specimen) as in Rosa (1985a). A widespread species that may require further subdivision after more study. Studies of its reproductive biology indicate that females attain sexual maturity between 24 and 32 cm DW (males between 20 and 30 cm DW), and may produce from three to 21 embryos per gestation (Achenbach & Achencbach, 1976) or only six or seven (Thorson et al., 1983b; these differences may be populational). Larger specimens may weigh 10 kg. This species has been captively bred in aquaria, but is still the most comercially imported species by the aquarium industry. Additional references: Bertin (1939), Castex & Castello (1970b), Achenbach & Achenbach (1976), Thorson et al. (1983b), Sérét & McEachran (1986), Ortega & Vari (1986), Paepke & Schmidt (1988), Barriga (1991), Compagno & Cook (1995), Lasso et al. (1997a), Ferreira et al. (1998), Britski et al. (1999).

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

; eau douce benthopélagique; pH range: 5.0 - 6.0; dH range: 10 - ?; potamodrome (Ref. 51243). Tropical; 24°C - 26°C (Ref. 2060)

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

South America: Uruguay, Paraná-Paraguay, Orinoco, and Amazon River basins.

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 50.0 cm WD mâle / non sexé; (Ref. 36687); poids max. publié: 34.2 kg (Ref. 85107)

Biologie     Glossaire (ex. epibenthic)

Found in freshwater rivers. It is an extremely dangerous species. Maximum length reported in Axelrod et al., 1991 (Ref. 6398) is 100 cm TL.

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

16 pups were born by one female in captivity (Ref. 57489).

Référence principale Upload your references | Références | Coordinateur : Carvalho, Marcelo | Collaborateurs

Ortega, H. and R.P. Vari, 1986. Annotated checklist of the freshwater fishes of Peru. Smithson. Contrib. Zool. (437):1-25. (Ref. 6329)

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

  Données manquantes (DD) ; Date assessed: 01 October 2005

CITES


CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Traumatogenic (Ref. 4716)





Utilisations par l'homme

Pêcheries: intérêt commercial mineur; Aquarium: Aquariums publics
FAO - Publication: search | FishSource |

Plus d'informations

Trophic ecology
Éléments du régime alimentaire
Diet compositions
Food consumptions
Food rations
Prédateurs
Ecology
Écologie
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Fréquences de longueurs
Mass conversions
Recruitments
Abundances
Life cycle
Reproduction
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
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BRUVS - Videos
Anatomy
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Type de nage
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Visual pigment(s)
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Diseases / Parasites
Toxicities (LC50s)
Genetics
Génétique
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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: 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).
Niveau trophique (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
Generation time: 6.5 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Résilience (Ref. 120179):  Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec=16).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (54 of 100).
Catégorie de prix (Ref. 80766):   Medium.