Results 41 to 50 of about 559 (179)

Ichthyofauna Used in Traditional Medicine in Brazil

open access: yesEvidence-Based Complementary and Alternative Medicine, Volume 2012, Issue 1, 2012., 2012
Fish represent the group of vertebrates with the largest number of species and the largest geographic distribution; they are also used in different ways by modern civilizations. The goal of this study was to compile the current knowledge on the use of ichthyofauna in zootherapeutic practices in Brazil, including ecological and conservational commentary
Ana Carla Asfora El-Deir   +9 more
wiley   +1 more source

Record of the freshwater stingrays Potamotrygon brachyura and P. motoro (Chondrichthyes, Potamotrygonidae) in the lower Uruguay river, South America Registro das raias de água doce Potamotrygon brachyura e P. motoro (Potamotrygonidae) no baixo rio Uruguai, America do Sul

open access: yesActa Amazonica, 2012
Freshwater stingrays, or potamotrygonids, are restricted to Neotropical river drainages. These elasmobranchs are well adapted to freshwater environments and the number of described species gradually increases as further research is carried out.
María Cristina Oddone   +2 more
doaj   +1 more source

Forensic Application of Cytb and COI Genes for Freshwater stingray Identification: A Seizure Case in Bogotá, Colombia

open access: yesRevista Científica
Freshwater 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   +1 more source

Species diversity of Rhinebothrium Linton, 1890 (Eucestoda: Rhinebothriidea) from Styracura (Myliobatiformes: Potamotrygonidae), including the description of a new species

open access: yes, 2017
Trevisan, Bruna, Marques, Fernando P. L. (2017): Species diversity of Rhinebothrium Linton, 1890 (Eucestoda: Rhinebothriidea) from Styracura (Myliobatiformes: Potamotrygonidae), including the description of a new species.
Marques, Fernando P. L.   +3 more
core   +1 more source

Trophic ecology and metabolism of two species of nonnative freshwater stingray (Chondrichthyes: Potamotrygonidae)

open access: yesHydrobiologia, 2020
The stingrays Potamotrygon amandae and Potamotrygon falkneri are nonnative species established in the Upper Parana basin. Although they are widely distributed, few studies on their diets or respective metabolic responses exist. Therefore, the aim was to evaluate the dietary composition, trophic niche breadth and lipid/protein concentrations in muscle ...
Cibele Diogo Pagliarini   +6 more
openaire   +3 more sources

Proposal of a non-lethal visual census method to estimate freshwater stingray abundance

open access: yesUniversitas Scientiarum, 2016
There is not a current method to estimate South American freshwater stingray’s abundance. Therefore we designed a census method and tested it in the field.
Mónica Andrea Morales-Betancourt   +1 more
doaj   +1 more source

História natural das raias de água doce (Chondrichthyes: Potamotrygonidae) na Ilha de Marajó (Pará- Brasil) [PDF]

open access: yes, 2008
The present study was on the natural history of freshwater stingrays species (Potamotrygonidae) of the Marajó Island. It was carried out in four sampling points (Afuá, Lago Arari, Muaná and Soure) in dry, rainy and transition seasons, in 2005 throughout
ALMEIDA, Mauricio Pinto de
core  

TRAFFICKING OF ORNAMENTAL FISH IN THE BRAZILIAN AMAZON

open access: yesBoletim do Instituto de Pesca, 2021
The trafficking of ornamental fish is growing on a yearly basis in the Brazilian Amazon. This represents a serious threat to the biodiversity of the region.
Hélio BELTRÃO   +3 more
doaj   +3 more sources

SERUM COMPOSITION OF FRESHWATER STRINGRAYS (POTAMOTRYGONIDAE) ADAPTED TO FRESH AND DILUTE SEA WATER

open access: yesThe Biological Bulletin, 1973
1. Juvenile freshwater stingrays of the family Potamotrygonidae are unable to survive in salinities in excess of 20.6‰ when gradually acclimated.2. No differences were observed in blood pH or hematological parameters when fish adapted to a salinity of 14.5‰ were compared with freshwater controls.3. Significant increases were found in serum sodium (21%),
Griffith, Robert W   +3 more
openaire   +2 more sources

Mecanismos de transporte iônico nos órgãos osmorregulatórios das arraias de água doce da família Potamotrygonidae [PDF]

open access: yes, 2016
Arraias são animais originalmente marinhos, entretanto podemos observar a existência de espécies do gênero habitando o ambiente de água doce da bacia amazônica.
Rubia Neris Machado
core   +1 more source

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