Results 131 to 140 of about 374 (150)
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Potamotrygon wallacei Carvalho, Rosa & Araujo 2016
2023Potamotrygon wallacei Carvalho, Rosa & Araújo, 2016 Holotype: MZUSP 117809; adult female, 253 mm DW (cited as 264 mm DW in Carvalho et al., 2016), (Fig. 18); Rio Negro, municipality of Barcelos, Amazonas, Brazil, 0°57' 30.24"S, 62°56'14.697"W; depth: not listed; F. Marques et al.; 09 Jan 2011.
Lima, Arthur De +4 more
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Potamotrygon falkneri Castex & Maciel 1963
2020P. falkneri Castex & Maciel, 1963 Potamotrygon falkneri Castex & Maciel, 1963 info Potamotrygon menchacai Martínez Achenbach, 1967 Potamotrygon castexi Castello & Yagolkowski, 1969 type localities castexi: Santa Fé, Rosario, Río Paraná falkneri: Entre Ríos, Río Paraná medio menchacai: Santa Fé, Río ...
Mirande, Juan Marcos, Koerber, Stefan
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Potamotrygon limai Fontenelle, Silva & Carvalho 2014
2023Potamotrygon limai Fontenelle, Silva & Carvalho, 2014 Holotype: MZUSP 104031; adult male, 477 mm DW (cited as 498 mm DW in Fontenelle et al. 2014) (Fig. 13); Represa Samuel, district of Itapo ã do Oeste, Rio Madeira basin, Rio Jamari, Amazon basin, Rondônia State, Brazil, 9º4’33.96’’S, 63º18’17.64’’W; depth not listed; F. P. L.
Lima, Arthur De +4 more
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Potamotrygon motoro (Müller & Henle 1841) Distribution tropical S. A., east of Andes. Notes Barriga (1994), Galacatos et al. (2004), Valdiviezo-Rivera et al. (2018), Jácome-Negrete et al. (2018).
Escobar-Camacho, Daniel +4 more
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Escobar-Camacho, Daniel +4 more
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Potamotrygon schroederi Fernandez-Yepez 1958
2011Published as part of De, Marcelo R., Sabaj, Mark H. & Lovejoy, Nathan R., 2011, Potamotrygon tigrina, a new species of freshwater stingray from the upper Amazon basin, closely related to Potamotrygon schroederi Fernandez-Yépez, 1958 (Chondrichthyes: Potamotrygonidae), pp.
De, Marcelo R. +2 more
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Serial reversal learning in freshwater stingrays (Potamotrygon motoro)
Animal Cognition, 2019Serial reversal learning is considered a reliable approach for the testing of behavioral flexibility, and animals that inhabit fluctuating habitats and different environments are expected to possess behavioral and cognitive flexibility. The ocellate river stingray (Potamotrygon motoro) is one such species.
Martha M. M. Daniel, Vera Schluessel
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Social learning in Cartilaginous fish (stingrays Potamotrygon falkneri)
Animal Cognition, 2013Social learning is considered one of the hallmarks of cognition. Observers learn from demonstrators that a particular behavior pattern leads to a specific consequence or outcome, which may be either positive or negative. In the last few years, social learning has been studied in a variety of taxa including birds and bony fish.
Kerstin E, Thonhauser +5 more
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Potamotrygon falkneri Castex & Maciel 1963
2011Published as part of da Silva, João Paulo C. B. & de Carvalho, Marcelo R., 2011, A taxonomic and morphological redescription of Potamotrygon falkneri Castex & Maciel, 1963 (Chondrichthyes: Myliobatiformes: Potamotrygonidae), pp. 209-232 in Neotropical Ichthyology 9 (1) on pages 211-222, DOI: 10.1590/s1679-62252011000100021, http://zenodo.org/record ...
da Silva, João Paulo C. B. +1 more
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Potamotrygon spp.: Elasmobranchs with Low Urea Content
Science, 1967All previously reported species of Chondrichthyes, from both marine and fresh water, have contained urea at concentrations ranging from about 300 to 1300 milligrams of urea nitrogen per 100 milliliters of fluid. Body fluids from two species of Potamotrygon , permanent residents of the Amazon basin, contained only 2 ...
T B, Thorson, C M, Cowan, D E, Watson
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Potamotrygon falkneri Castex & Maciel 1963
2014Published as part of The, Stefan Koerber & Only, L'., 2014, List of Freshwater Fishes from Argentina - Update 15., pp.
The, Stefan Koerber, Only, L'.
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