Comparison of the effects of anticoagulants used in blood collection to determine blood parameters of free-living stingrays from the Potamotrygon genus (Elasmobranchii: Potamotrygonidae). [PDF]
, 2017 This study assessed the effectiveness of three anticoagulants in blood parameters of "cururu" stingrays Potamotrygon cf . histrix. Blood from ten individuals were collected and diluted with anticoagulants EDTA 5% and 10%, heparin 2500 and 5000 UI and ...
LEMOS, J. R. G. +4 more
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Size-based variation in intertissue comparisons of stable carbon and nitrogen isotopic signatures of bull sharks (Carcharhinus leucas) and tiger sharks (Galeocerdo cuvier) [PDF]
, 2010 Stable isotopes are important tools for understanding the trophic roles of elasmobranchs. However, whether different tissues provide consistent stable isotope values within an individual are largely unknown.
Heithaus, Michael R. +2 more
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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 +5 more
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Bibliografía de los peces de agua dulce de Argentina y Uruguay : Suplemento 1982 [PDF]
, 1982 Fil: López, Hugo Luis. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Menni, Roberto Carlos. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Ringuelet, Raúl Adolfo. Instituto de Limnología Dr. Raúl A. Ringuelet (ILPLA); Facultad de
López, Hugo Luis +2 more
core
Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River
Neotropical IchthyologyHunting tactics of potamotrygonid freshwater rays remain unreported under natural conditions. Three main foraging tactics of Potamotrygon falkneri and P. motoro are described here based on underwater observations in the upper Paraná River.
Domingos Garrone-Neto, Ivan Sazima
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Neotropical IchthyologyThe life history of freshwater stingrays (Potamotrygonidae) under natural conditions has been poorly documented. In this study, we investigated theperiod of activity and the habitat use of two species of the genus Potamotrygon in the upper Paraná River ...
Domingos Garrone Neto +1 more
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Lista de los peces de agua dulce de la Argentina. [PDF]
, 1987 Lista de peces de agua dulce restringida a la información básica: los autores de géneros y especies, la fecha de descripción, y las referencias bibliográficas a aquellos trabajos que fundamentan las modificaciones o agregados realizados.
López, Hugo Luis +2 more
core
Os bagres como presas de raias Potamotrygonidae nos Rios Solimões e Negro, Amazônia Brasileira [PDF]
, 2013 In spite of the fact that catfish have rarely been reported as food items in the diets of freshwater stingrays, they are commonly observed in the stomach contents of species inhabiting the Solimões and Negro rivers in the Brazilian Amazon.
Shibuya, Akemi, Zuanon, Jansen
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Neotropical IchthyologyThe family Potamotrygonidae is monophyletic comprising three genera: Paratrygon Duméril, Potamotrygon Garman and Plesiotrygon Rosa, Castello & Thorson.
Renata G. Frederico +4 more
doaj +1 more source
The more stirring the better: cichlid fishes associate with foraging potamotrygonid rays
Neotropical IchthyologyOne hunting tactic of freshwater rays (Potamotrygonidae), termed "undulate the disc and stir substrate", is here reported to attract cichlids at two sites in the upper Paraná River.
Domingos Garrone-Neto, Ivan Sazima
doaj +1 more source