Anais da Academia Brasileira de Ciências, 2021 In the Xingu river basin, Brazil, occurs two genera of Potamotrygonidae family: Potamotrygon and Paratrygon. In this region, the taxa have significant economic importance for the ornamental fishing industry, being intensively captured, especially the ...
DAMIRES SANCHES +10 more
doaj +1 more source
Not just shades of grey: life is full of colour for the ocellate river stingray (Potamotrygon motoro) [PDF]
Journal of Experimental Biology, 2021 ABSTRACTPrevious studies have shown that marine stingrays have the anatomical and physiological basis for colour vision, with cone spectral sensitivity in the blue to green range of the visible spectrum. Behavioural studies on Glaucostegus typus also showed that blue and grey can be perceived and discriminated.
Vera Schluessel +4 more
openaire +2 more sources
Digenea, Nematoda, Cestoda, and Acanthocephala, parasites in Potamotrygonidae (Chondrichthyes) from the upper Paraná River floodplain, states of Paraná and Mato Grosso do Sul, Brazil [PDF]
Check List, 2008 The present paper represents the first study on the endoparasitic fauna of Potamotrygon falkneri and P. motoro in the upper Paraná River floodplain. Fishes were collected by fishing rod and gillnetting in different stations of the floodplain, from March,
Ana Lacerda +2 more
doaj +5 more sources
Proposal of a non-lethal visual census method to estimate freshwater stingray abundance
Universitas Scientiarum, 2016 There is not a current method to estimate South American freshwater stingray’s abundance. Therefore we designed a census method and tested it in the field.
Mónica Andrea Morales-Betancourt +1 more
doaj +1 more source
Acta Scientiarum: Biological Sciences, 2008 Potamotrygonidae constitui o único grupo recente de Chondrichthyes cujo habitat está restrito, exclusivamente, a águas continentais. Na planície de inundação do Alto rio Paraná, espécies desta família estabeleceram-se após o fechamento das comportas da ...
Antonio Guilherme Cândido da Silva +1 more
doaj +1 more source
Acidentes causados pela arraia fluvial Potamotrygon motoro em comunidades lacustres em Território do bioma Oriental da Amazônia [PDF]
, 2021 The injuries caused by freshwater stingrays are common among fishermen. The raya Potamotrygon motoro en the features a stinger with a sharp edge and serrated tips spread bilaterally, the stingers have toxins that promote vasoconstriction, causing ...
Carvalho, Ingredy Eylanne Monroe +5 more
core +1 more source
Morphology and morphometry of blood cells of two species of freshwater stingrays (Chondrichthyes: Potamotrygoninae) from the lower Solimões river, Amazon [PDF]
Anais da Academia Brasileira de CiênciasCytomorphological evaluation of peripheral blood provides information about the health status of animals, in addition to being indicators of environmental contamination.
MARCIO QUARA DE C. SANTOS +3 more
doaj +1 more source
, 2014 Published as part of Litz, Thomas O. & The, Stefan Koerber Introduction, 2014, Check List of the Freshwater Fishes of Uruguay (CLOFF-UY)., pp.
Litz, Thomas O. +1 more
openaire +2 more sources
Physiological parameters of freshwater stingrays from the Uatumã River Basin, Amazon, Brazil [PDF]
Anais da Academia Brasileira de CiênciasKnowledge of freshwater stingrays’ physiological parameters is essential for conserving elasmobranch diversity. This study aims to characterize the erythrogram and plasma biochemistry of freshwater stingrays from the Uatumã River basin for the first time.
MARIA FERNANDA S. GOMES +8 more
doaj +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