Potamotrygon orbignyi, Smooth back river stingray

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Potamotrygon orbignyi (Castelnau, 1855)

Smooth back river stingray
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Potamotrygon orbignyi
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Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranquios (tiburones y rayas) (sharks and rays) > Myliobatiformes (Stingrays) > Potamotrygonidae (River stingrays)
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 Ecología

; agua dulce bentopelgico; pH range: 6.8 - 7.5.   Tropical; 24°C - 26°C (Ref. 12468)

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

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

Tamaño / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 35.0 cm WD macho / no sexado; (Ref. 27749); 32.5 cm WD (female); peso máximo publicado: 1.4 kg (Ref. 27749); peso máximo publicado: 1.4 kg

Biología     Glosario (por ej. epibenthic)

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

Life cycle and mating behavior Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

Main reference Upload your references | Referencias | Coordinador : 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)

IUCN Red List Status (Ref. 120744)

  Least Concern (LC) ; Date assessed: 24 June 2003

CITES (Ref. 118484)


CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO(Publication : search) | FishSource |

Más información

Nombres comunes
Sinónimos
Metabolismo
Despredadores
Ecotoxicología
Reproducción
Madurez
Puesta
Agregación para la puesta
Fecundidad
Huevos
Egg development
Age/Size
Crecimiento
Length-weight
Length-length
Length-frequencies
Morfometría
Morfología
Larva
Dinámica larvaria
Reclutamiento
Abundancia
Referencias
Acuicultura
Perfil de acuicultura
Razas
Genética
Frecuencias de alelos
heritabilidad
Enfermedades
Procesamiento
Mass conversion
Colaboradores
Imágenes
Stamps, Coins Misc.
Sonidos
Ciguatera
Velocidad
Tipo de natación
Superficie branquial
Otolitos
Cerebros
Visión

Herramientas

Special reports

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Fuentes de Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  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).
Nivel trófico (Ref. 69278):  3.2   ±0.43 se; Based on food items.
Resiliencia (Ref. 120179):  Muy bajo, población duplicada en un tiempo mínimo superior a 14 años (Assuming Fec <10).
Vulnerability (Ref. 59153):  Very high vulnerability (89 of 100) .