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Socio-economic development, scientific research, and exploitation explain differences in conservation status of marine and freshwater chondrichthyans among countries
(Springer, 2019-11)
Sharks, skates, rays and chimaeras (chondrichthyans) are of high conservation concern; especially obligate freshwater chondrichthyans, given their restricted ranges, proximity to humans, and threatened habitat. The biological ...
Histopathological changes induced by extracts from the tissue covering the stingers of Potamotrygon falkneri freshwater stingrays
(Pergamon-Elsevier B.V. Ltd, 2014)
Mapeamento de arraias fluviais do gênero Potamotrygon no rio Tietê, Estado de São Paulo
(Universidade Estadual Paulista (Unesp), 2021-12-01)
As arraias fluviais são peixes adaptados às águas dos rios e lagos e são encontradas nas bacias hidrográficas da América do Sul. A expansão da família zoológica no médio e alto rio Paraná iniciou-se após o represamento do ...
Injuries Caused by Freshwater Stingrays in the Western Amazon: Folk Medicine and Beliefs
(Soc Ethnobiology, 2020-01-01)
The envenomation caused by freshwater stingrays is one of the most frequent injuries related to aquatic animals in South America. Such injury is severe with skin necrosis as a probable result of the sting and subsequent ...
First report and description of a Cyrilia sp. (Apicomplexa: Haemogregarinidae) from a freshwater Cururu Stingray Potamotrygon cf. histrix (Elasmobranchii: Potamotrygonidae), from the Amazon Region, Brazil
(2016-08-01)
A haemogregarine is described in 12 cururu stingray (Potamotrygon cf. histrix), from Mariuá Archipelago, Negro River, in the Brazilian Amazon Basin. All animals, both male and female, were parasitized by the haemogregarine ...
Freshwater sharks and rays
(Cell Press, 2015-10)
Hang on, I thought sharks and rays only live in the ocean? That’s true for about 95%. However, there are species of elasmobranchs (sharks and rays) that occur regularly at low salinities, often beyond the tidal reaches of ...
Cleaning interactions between shrimps (Palaemonidae) and freshwater stingrays (Potamotrygonidae) in the Parana River, Southeastern Brazil
(Verlag Dr. Friedrich Pfeil, 2014)
Cleaning interactions between shrimps (Palaemonidae) and freshwater stingrays (Potamotrygonidae) in the Parana River, Southeastern Brazil
(Verlag Dr. Friedrich Pfeil, 2014)
Ingestion of catfish by freshwater stingray: possible mistake or inexperience
(Instituto Virtual da Biodiversidade (BIOTA/FAPESP), 2009-12-01)
Registramos um indivíduo da raia de água doce, Potamotrygon falkneri, com a cavidade oral parcialmente obstruída por uma espécie de bagre, Pimelodella gracilis, já em processo de decomposição. A ingestão de bagres possivelmente ...
Ingestion of catfish by freshwater stingray: possible mistake or inexperience
(Instituto Virtual da Biodiversidade (BIOTA/FAPESP), 2009-12-01)
Registramos um indivíduo da raia de água doce, Potamotrygon falkneri, com a cavidade oral parcialmente obstruída por uma espécie de bagre, Pimelodella gracilis, já em processo de decomposição. A ingestão de bagres possivelmente ...