A New Species of Tetraphyllidean (Cestoda) from the Largespot River Stingray, Potamotrygon falkneri (Potamotrygonidae: Chondrichthyes), from the Paraná Basin [PDF]
Journal of Parasitology, 2009 Rhinebothrium paranaensis n. sp. (Tetraphyllidea: Cestoda) is described from the freshwater stingray Potamotrygon falkneri collected in the Colastiné River, a tributary to the Lower Parana River in Argentina. The specimens were studied in detail using light and scanning electron microscopy and histology.
Menoret, Adriana +1 more
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Ecology of endoparasites of the fluvial stingray Potamotrygon falkneri (Chondrichthyes: Potamotrygonidae) from the upper Paraná River floodplain, Brazil [PDF]
Brazilian Journal of Biology, 2009 The present study investigated the ecological relationships between endoparasites and the host Potamotrygon falkneri from the upper Paraná River by using as indicators the host's relative condition factor (Kn), sex and hepatosomatic relation (HSR). Forty-seven specimens of P. falkneri were analyzed between March 2005 and September 2006.
Acf Lacerda, Ricardo Massato Takemoto
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A new species of Neotropical freshwater stingray of the genus Potamotrygon Garman, 1877 from the Río Madrede Díos, Peru (Chondrichthyes: Potamotrygonidae) [PDF]
Papéis Avulsos de Zoologia, 2011 Potamotrygon tatianae sp. nov., is described from Río Madre de Díos, Peru, upper Rio Madeira basin. The new species is distinguished from all congeners by a unique combination of characters, including its dorsal color pattern formed by a relatively ...
João Paulo C.B. da Silva +1 more
doaj +5 more sources
Integrating invasive species risk assessment into environmental DNA metabarcoding reference libraries. [PDF]
Ecol Appl, 2023 Abstract Environmental DNA (eDNA) metabarcoding has shown promise as a tool for estimating biodiversity and early detection of invasive species. In aquatic systems, advantages of this method include the ability to concurrently monitor biodiversity and detect incipient invasions simply through the collection and analysis of water samples.
Mahon AR, Grey EK, Jerde CL.
europepmc +2 more sources
Venom gland transcriptome analyses of two freshwater stingrays (Myliobatiformes: Potamotrygonidae) from Brazil. [PDF]
Sci Rep, 2016 Stingrays commonly cause human envenoming related accidents in populations of the sea, near rivers and lakes. Transcriptomic profiles have been used to elucidate components of animal venom, since they are capable of providing molecular information on the
de Oliveira Júnior NG +9 more
europepmc +4 more sources
Caracterização de enzimas em peçonhas animais : identificação de fosfolipases do escorpião Hadrurus gerstchi e atividades enzimáticas da arraia Potamotrygon falkneri [PDF]
, 2022 Tese (doutorado)—Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Biologia Animal, 2017. ; Peçonhas animais são misturas complexas de componentes cuja função está relacionada com a defesa ou captura/digestão da presa e essa composição é variável de acordo com o grupo filogenético, distribuição geográfica ...
Magalhães, Marta Regina
openaire +5 more sources
Acta Scientiarum: Biological Sciences, 2007 As raias Potamotrygon falkneri e Potamotrygon motoro foram avaliadas em relação à composição de suas dietas e a sobreposição do nicho trófico nos períodos de seca (agosto/2004) e cheia (janeiro/2005) na planície alagável do alto rio Paraná, em três ...
Alessandra Pasian Lonardoni +3 more
doaj +6 more sources
Preliminary data on the feeding habits of the freshwater stingrays Potamotrygon falkneri and Potamotrygon motoro (Potamotrygonidae) from the Upper Paraná River basin, Brazil [PDF]
Biota Neotropica, 2007 Stingrays of the Potamotrygonidae family are a singular group of Neotropical ichthyofauna. Although ancient reports exist about the group, there are still many questions that need to be clarified, such as the biology of the species that occur in the Paraná-Paraguay River system.
Virgínia Sanches Uieda
exaly +6 more sources
Avaliação da citotoxicidade do extrato do ferrão de arraia Potamotrygon falkneri (Myliobatiformes:Potamotrygonidae) [PDF]
, 2017 Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Biologia Animal, 2015. ; Em diversas regiões brasileiras os acidentes provocados por arraias dulcícolas são temidos por serem causa comum de necrose tissular e infecções bacterianas secundárias, que frequentemente implicam em incapacidade ...
Oliveira, Lilibete Pereira de
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The more stirring the better: cichlid fishes associate with foraging potamotrygonid rays [PDF]
Neotropical Ichthyology, 2015 One hunting tactic of freshwater rays (Potamotrygonidae), termed "undulate the disc and stir substrate", is here reported to attract cichlids at two sites in the upper Paraná River.
Domingos Garrone-Neto, Ivan Sazima
doaj +3 more sources