Results 81 to 90 of about 972 (148)

Caracterización morfológica de los estadios embrionarios de la raya dulceacuícola Potamotrygon magdalenae (Elasmobranchii: Potamotrygonidae)

Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2022
Potamotrygon magdalenae, una raya perteneciente a la familia Potamotrygonidae distribuida en la cuenca del río Magdalena, es considerada de muy alta prioridad para la investigación en el Plan de Acción Nacional para la Conservación y Manejo de Tiburones,
Sergio Antonio Lizcano-Gutiérrez, Martha Patricia Ramírez-Pinilla   +1 more
doaj  

Potamotrygon scobina

, 2017
Identification key for species of the Potamotrygon scobina complex 1a. Dorsal disc color with a reticulate, polygonal pattern, lacking ocelli; whitish blotches, when present, very small; tail with dorsal polygonal color pattern at base; dorsal tail ...
João Pedro Fontenelle, Marcelo R. De Carvalho   +1 more
core   +1 more source

Diversidad genética de potamotrygon motoro en las cuencas del Onrinóco y Amazonas colombiano [PDF]

, 2017
61 p. Recurso ElectrónicoLa falta de claridad frente a la taxonomía de Potamotrygon motoro y la ausencia de estudios previos de su diversidad genética, hace a la especie vulnerable al ser la segunda especie de raya de agua dulce más extraída y exportada ...
Renza Millán, Mariana
core   +1 more source

A test of the utility of DNA barcoding in the radiation of the freshwater stingray genus Potamotrygon (Potamotrygonidae, Myliobatiformes)

Genetics and Molecular Biology, 2008
DNA barcoding is a recently proposed global standard in taxonomy based on DNA sequences. The two main goals of DNA barcoding methodology are assignment of specimens to a species and discovery of new species.
Daniel Toffoli, Tomas Hrbek, Maria Lúcia Góes de Araújo, Maurício Pinto de Almeida, Patricia Charvet-Almeida, Izeni Pires Farias   +5 more
doaj   +1 more source

Potamotrygon Garman 1877

, 2018
Potamotrygon 1. Dorsal surface of the disc with yellow or orange ocelli, larger than diameter of the eye, surrounded by a black ring, which do not extend distally over the tail................ P. amandae 1’.
Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da, Pavanelli, Carla Simone, Ota, Renata Rúbia   +3 more
core   +1 more source

Ecophysiological interactions and water-related physicochemical parameters among freshwater stingrays

Brazilian Journal of Biology
The objective of this study was to compare and correlate the ecology of neonates and young individuals of Potamotrygon wallacei, Potamotrygon motoro and Paratrygon aiereba with regard to their hematological profile and the physicochemical parameters of ...
A. T. Oliveira, M. L. G. Araújo, J. R. G. Lemos, M. Q. C. Santos, J. Pantoja-Lima, P. H. R. Aride, M. Tavares-Dias, J. L. Marcon   +7 more
doaj   +1 more source

Potamotrygon schroederi

, 2017
Ejemplar de raya guacamayaFaunaVichadaLaboratorio Fundación OrinoquíaLaboratorio de pecesRaya guacamayaPotamotrygon schroederiAnimaliaChordataChondrichthyesMyliobatiformesPotamotrygonidaePotamotrygonPuerto ...
Novoa Serna, María del Rosario
core  

Análises transcritômicas do ferrão de Potamotrygon falkneri e Potamotrygon motoro [PDF]

, 2014
Dissertação (mestrado)—Fundação Universidade de Brasília, Programa de Pós-Graduação em Biologia Animal, 2014.Potamotrygon falkneri e Potamotrygon motoro consistem em espécies de arraias da família Potamotrygonidae.
Oliveira Júnior, Nelson Gomes de
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Ecomorfology and intra-specific variation in the morphology of Potamotrygon falkneri and Potamotrygon motoro (Chondrichthyes-Potamotrygonidae) in the upper Paraná river and its foodplain, Brazil.

, 2009
Potamotrygonidae comprises the only group of fish with cartilaginous skeletons that has adaptations to live exclusively in fresh water. The family is widely distributed in South American rivers that drain towards the Atlantic and has great richness, with
Lonardoni, Alessandra Pasian
core   +2 more sources

Fístula arterio-venosa secundaria a picadura de raya de río Arteriovenous fistula secondary to stingray puncture

Iatreia, 1993
<p class="MsoNormal"><span style="font-size: 9pt; font-family: Arial">Se presenta el caso de un paciente de sexo masculino, pescador, lesionado en la región fe. moral por una raya de río (Potamotrygon magdalenne) lo que le produjo una fístula
Rodrigo Girón, Emilio Alberto Restrepo Baena   +1 more
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