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Elasmobranchii (tubarões e raias) (sharks and rays) > Myliobatiformes (Stingrays) > Potamotrygonidae (River stingrays) > Potamotrygoninae
Etymology: Potamotrygon: Greek, potamos = river + Greek, trygon = a sting ray (Ref. 45335).
More on author: Castelnau.

Issue
A widespread species that may require subdivision. Rosa (1985a) recognizes Potamotrygon dumerilli (Castelnau 1855) and Potamotrygon humerosus Garman 1913 as distinct species, but evidence given is meager. Larger specimens may weigh close to five kg. Reproductive biology studied by Lasso et al. (1997a) in Venezuela; males achieve sexual maturity at 23 cm DL and females at 18.5 cm DL, and females give birth to up to two pups during any time of year. Food consists of fishes, insects and crustaceans. Additional references: Bertin (1939), Sérét & McEachran (1986), Compagno & Cook (1995), Planquette et al. (1996).

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

; Água doce bentopelágico; pH range: 6.8 - 7.5. Tropical; 24°C - 26°C (Ref. 12468)

Distribuição Países | Áreas FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

South America: Widespread in Amazon and Orinoco River basins and in river systems in Suriname, Guyana and French Guiana.

Tamanho / Peso / Idade

Maturity: L_m ? range ? - ? cm
Max length : 35.0 cm WD macho/indeterminado; (Ref. 27749); 32.5 cm WD (female); peso máx. Publicado: 1.4 kg (Ref. 27749); peso máx. Publicado: 1.4 kg

Occurs in stream swamps, floodplain lakes and artificial lagoons. Feeds mainly on insects and benthic crustaceans (Ref. 27749).

Life cycle and mating behavior Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

Referência principal Upload your references | Referências | Coordenador : Carvalho, Marcelo | Colaboradores

Lasso, C.A., A. Rial B. and O. Lasso-Alcalá., 1997. Notes on the biology of the freshwater stingrays Paratrygon aiereba (Müller & Henle, 1841) and Potamotrygon orbignyi (Castelnau, 1855) (Chondrichthyes: Potamotrygonidae) in the Venezuelan Llanos. aqua, J. Ichthyol. Aquat. Biol. 2(3):39-52. (Ref. 27749)

Categoria na Lista Vermelha da IUCN (Ref. 130435)

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Potamotrygon orbignyi (Castelnau, 1855)