Ichthyological ethnoknowledge of the “piabeiros” from the Amazon region, Brazil [PDF]
Journal of Ethnobiology and Ethnomedicine, 2021 Background The capture of ornamental fish is one of the main economic activities of riverine families in the Amazon. However, studies regarding the local ecological knowledge of workers in this activity are still incipient.
Daniel da Silva Ladislau +5 more
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Forensic Application of Cytb and COI Genes for Freshwater stingray Identification: A Seizure Case in Bogotá, Colombia [PDF]
Revista CientíficaFreshwater stingrays of the Potamotrygonidae family are highly valued in the international market as ornamental fish, leading to growing demand and economic significance. In Colombia, despite legal regulations aimed at protecting these animals and their
Lisbeth Gelvez +6 more
doaj +3 more sources
Complete mitochondrial genome of the river stingray Potamotrygon orbignyi (Myliobatiformes: Potamotrygonidae) [PDF]
Mitochondrial DNA. Part B. Resources, 2019 The river stingray Potamotrygon orbignyi is a carnivorous bottom feeder that is widespread in the Amazonian region. We here assemble the 17,449 bp complete mitochondrial genome of the species, showing a typical gene arrangement as for related ...
David Ory +5 more
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[PROVISIONAL] Chromosomal characterization of Amazonian freshwater stingrays with evidence for new karyomorphs and XX/XY sex chromosomes [PDF]
Genetics and Molecular Biology, 2019 Cytogenetic studies in the subfamily Potamotrygoninae has already provided valuable insights into the understanding of the evolution and diversification of its species.
Francisco Carlos de Souza Valentim +2 more
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Neotropical Ichthyology, 2013 A systematic revision of the Potamotrygon motoro (Muller & Henle, 1841) species complex in the Parana-Paraguay basin based on morphological characters was undertaken.
T. S. Loboda, M. R. Carvalho
semanticscholar +3 more sources
Gill dimensions in near-term embryos of Amazonian freshwater stingrays (Elasmobranchii: Potamotrygonidae) and their relationship to the lifestyle and habitat of neonatal pups [PDF]
Neotropical IchthyologyThis comparative study of gill morphometrics in near-term embryos of freshwater stingray potamotrygonids examines gill dimensions in relation to neonatal lifestyle and habitat.
Wallice Paxiúba Duncan +2 more
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Morphology of lateral line canals in Neotropical freshwater stingrays (Chondrichthyes: Potamotrygonidae) from Negro River, Brazilian Amazon [PDF]
Neotropical Ichthyology, 2010 The relationship between the distribution of the lateral line canals and their functionality has not been well examined in elasmobranchs, especially among Neotropical freshwater stingrays of the family Potamotrygonidae.
Akemi Shibuya +3 more
doaj +4 more sources
The ancient and helical architecture of Elasmobranchii's spermatozoa enables progressive motility in viscous environments. [PDF]
PLoS ONESubclass Elasmobranchii belongs to an old evolutionary class of Chondrichthyes that diverged 450 mya, presenting a wide diversity of reproductive strategies while preserving the ancient mode of internal fertilization.
Sergii Boryshpolets +6 more
doaj +2 more sources
The ocellate river stingray (Potamotrygon motoro) exploits vortices of sediment to bury into the substrate [PDF]
Journal of Fish Biology, 2019 Particle image velocimetry and video analysis were employed to discern and describe the mechanism used by the stingray Potamotrygon motoro to bury into the substrate. P.
Scott G. Seamone, D. Syme
semanticscholar +3 more sources
Acta Scientiarum: Biological Sciences, 2007 Feeding habits and trophic overlap of freshwater stingrays Potamotrygon falkneri e Potamotrygon motoro were evaluated in the upper Parana river floodplain. Samples were collected during periods of drought (August/2004) and flood (January/2005) near Mutum
Alessandra Pasian Lonardoni +3 more
semanticscholar +3 more sources