Results 1 to 10 of about 265 (75)

Distribution modelling for Neotropical freshwater stingrays Potamotrygon brachyura and Potamotrygon motoro (Myliobatiformes, Potamotrygonidae) in the Uruguay River basin [PDF]

Journal of Fish Biology
This study aimed to identify geographical distribution patterns of the giant short‐tailed river stingray Potamotrygon brachyura and the motoro stingray Potamotrygon motoro in the Uruguay River basin.
Nelson Ferreira Fontoura, Danilo Araujo Soares Pereira   +1 more
exaly   +4 more sources

Testicular Morphology and Spermatogenesis in Potamotrygon motoro: Insights Into Reproduction of Freshwater Stingrays [PDF]

Journal of Morphology
This study investigated the spermatogenesis of the freshwater stingray Potamotrygon motoro using microscopic analyses. The testes of this species were described as being composed of germinal zones, a degenerated zone, and the epigonal organ, consisting ...
Patricia Postingel Quirino, Rosicleire Veríssimo-Silveira, Alexandre Ninhaus-Silveira   +2 more
exaly   +3 more sources

Conservation threats and future prospects for the freshwater fishes of Ecuador: A hotspot of Neotropical fish diversity. [PDF]

J Fish Biol, 2021
ABSTRACT Freshwater fish communities in Ecuador exhibit some of the highest levels of diversity and endemism in the Neotropics. Unfortunately, aquatic ecosystems in the country are under serious threat and conditions are deteriorating. In 2018–19, the government of Ecuador sponsored a series of workshops to examine the conservation status of Ecuador's ...
Aguirre WE, Alvarez-Mieles G, Anaguano-Yancha F, Burgos Morán R, Cucalón RV, Escobar-Camacho D, Jácome-Negrete I, Jiménez Prado P, Laaz E, Miranda-Troya K, Navarrete-Amaya R, Nugra Salazar F, Revelo W, Rivadeneira JF, Valdiviezo Rivera J, Zárate Hugo E.   +15 more
europepmc   +2 more sources

Trends in Medicinal Uses of Edible Wild Vertebrates in Brazil. [PDF]

Evid Based Complement Alternat Med, 2017
The use of food medicines is a widespread practice worldwide. In Brazil, such use is often associated with wild animals, mostly focusing on vertebrate species. Here we assessed taxonomic and ecological trends in traditional uses of wild edible vertebrates in the country, through an extensive ethnobiological database analysis. Our results showed that at
Alves RRN, Oliveira TPR, Oliveira TPR, Medeiros MFT.   +3 more
europepmc   +2 more sources

Morfometria de raias continentais (Chondrichthyes, Potamotrygonidae) do alto rio Paraná, Brasil - DOI: 10.4025/actascibiolsci.v29i4.885

Acta Scientiarum: Biological Sciences, 2008
Potamotrygonidae constitui o único grupo recente de Chondrichthyes cujo habitat está restrito, exclusivamente, a águas continentais. Na planície de inundação do Alto rio Paraná, espécies desta família estabeleceram-se após o fechamento das comportas da ...
Antonio Guilherme Cândido da Silva, Erivelto Goulart   +1 more
doaj   +2 more sources

Wild animals used as food medicine in Brazil. [PDF]

Evid Based Complement Alternat Med, 2013
The connection between eating and healing is common in traditional folk medical systems, and the multiple possibilities resulting from the combination of biodiversity and culture confer a wealth and complexity in terms of knowledge of the flora and fauna as to their potential as food medicine.
Alves RR, Oliveira TP, Rosa IL.
europepmc   +2 more sources

Ichthyofauna used in traditional medicine in Brazil. [PDF]

Evid Based Complement Alternat Med, 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
El-Deir AC, Collier CA, de Almeida Neto MS, Silva KM, Policarpo Ida S, Araújo TA, Alves RR, de Albuquerque UP, de Moura GJ.   +8 more
europepmc   +2 more sources

Transcriptomic Characterization of the South American Freshwater Stingray Potamotrygon motoro Venom Apparatus

Toxins, 2018
Venomous animals are found through a wide taxonomic range including cartilaginous fish such as the freshwater stingray Potamotrygon motoro occurring in South America, which can injure people and cause venom-related symptoms. Ensuring the efficacy of drug
Xidong Mu, Agostinho Antunes, Qiong Shi
exaly   +2 more sources

Production of live offspring following unilateral (left) ovariectomized Potamotrygon rays (Potamotrygon castexi, Potamotrygon leopoldi, and Potamotrygon motoro).

Journal of the American Veterinary Medical Association, 2023
OBJECTIVE To evaluate the surgical technique and subsequent clinical observations (reproductive and ultrasound findings) of left unilateral ovariectomy in 3 species of Potamotrygon rays-Potamotrygon castexi, Potamotrygon leopoldi, and Potamotrygon motoro-
Chelsea E. Anderson, J. D. Gillis, Sarah N Miller, Michelle R. Davis   +3 more
semanticscholar   +1 more source

Dimorfismo sexual de las aletas pélvicas en Potamotrygon motoro (Batoidea: Potamotrigonidae)

Revista de Investigaciones Veterinarias del Perú, 2023
Los claspers en los condrictios son alargamientos especializados en el lado posterior de las aletas pélvicas de los machos que se utilizan para la transferencia de esperma durante la cópula.
D. Pérez, G. Olea, Tania Blanco Cohene, Evelyn Rodriguez Florencia, C. Flores Quintana   +4 more
semanticscholar   +1 more source