Results 201 to 210 of about 519,530 (231)

Potamotrygon marquesi, a new species of neotropical freshwater stingray (Potamotrygonidae) from the Brazilian Amazon Basin.

Journal of Fish Biology, 2019
Potamotrygon marquesi, sp. nov., is described and compared with other species of Potamotrygon occurring in the Amazon Basin. The identity of this new species is supported by an extensive external and internal morphological study including coloration ...
João Paulo Capretz Batista da Silva, Thiago Silva Loboda   +1 more
semanticscholar   +1 more source

Long‐Distance Movement by a Giant Freshwater Stingray, Potamotrygon brachyura , Challenges Our View on Movement Ecology and Management of Obligate Freshwater Elasmobranchs

Aquatic conservation
Freshwater elasmobranchs, both euryhaline and obligate species, are poorly understood and highly threatened with extinction globally. Euryhaline species can move tens to thousands of kilometres, whereas obligate species studied so far typically moved
D. M. Vazquez, L. Lucifora
semanticscholar   +1 more source

Shearing overbite and asymmetrical jaw motions facilitate food breakdown in a freshwater stingray, Potamotrygon motoro

Journal of Experimental Biology, 2019
Many species of fish process their prey with cyclic jaw motions that grossly resemble those seen in mammalian mastication, despite starkly different tooth and jaw morphologies.
J. Laurence-Chasen, Jason B. Ramsay, E. Brainerd   +2 more
semanticscholar   +1 more source

Mitochondrial DNA diversity and population structure of the ocellate freshwater stingray Potamotrygon motoro (Müller & Henle, 1841) (Myliobatiformes: Potamotrygonidae) in the Colombian Amazon and Orinoco Basins

Mitochondrial DNA. Part A, DNA mapping, sequencing, and analysis, 2019
The lack of clarity regarding the taxonomy of the ocellate river stingray (Potamotrygon motoro) and the absence of previous studies regarding its genetic diversity and population structure makes this species vulnerable to overexploitation, being now the ...
Mariana Renza-Millán, C. Lasso, Mónica A Morales-Betancourt, Francisco Villa, S. Caballero   +4 more
semanticscholar   +1 more source

Follicular growth and sex steroids in adult females of the endemic Amazonian freshwater stingray Potamotrygon wallacei (Chondrichthyes, Potamotrygonidae)

Environmental Biology of Fishes, 2021
Ruben Dario Morales-Gamba, M. L. G. de Aráujo, J. F. Barcellos, J. Marcon   +3 more
semanticscholar   +1 more source

Phylogeography, genetic diversity and population structure of the freshwater stingray, Paratrygon aiereba (Müller & Henle, 1841) (Myliobatiformes: Potamotrygonidae) in the Colombian Amazon and Orinoco basins

Mitochondrial DNA Part A: DNA Mapping, Sequencing, and Analysis, 2021
Camilo A Correa-Cárdenas, Maira A Rizo-Fuentes, Mónica A Morales-Betancourt   +2 more
exaly  

Profile of Freshwater Stingrays

2017
openaire   +1 more source

Freshwater Stingrays from South America

Copeia, 2001
openaire   +1 more source

Integument morphology of the smallest Amazonian freshwater stingray Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

Environmental Biology of Fishes
M. S. Braga, Ruben Dario Morales-Gamba, Maria I A de Oliveira, J. L. Marcon, G. S. da Silva   +4 more
semanticscholar   +1 more source

Biology and Ecology of Freshwater Stingrays

2017
openaire   +1 more source