Results 91 to 100 of about 1,823 (231)
Liste commentée des poissons de l'Amazonie bolivienne [PDF]
, 1991 Après une brève présentation de l'Amazonie bolivienne, des milieux prospectés, de l'effort de pêche, des travaux anciens et récents, les auteurs founissent une liste commentée des poissons rencontrés.
Lauzanne, Laurent +2 more
core
A systematic revision of the South American freshwater stingrays (chondrichthyes: potamotrygonidae) (batoidei, myliobatiformes, phylogeny, biogeography) [PDF]
, 1985 Three genera are recognized in the family Potamotrygonidae of neotropical freshwater stingrays: Potamotrygon, Paratrygon, and Plesiotrygon, the latter being described as a new genus.
Rosa, Ricardo de Souza
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The Journal of Parasitology, 1992 Members of the freshwater stingray family Potamotrygonidae occur throughout the major river systems of eastern South America that empty into the Atlantic Ocean. Ichthyologists have tended to assume that the ancestor of the potamotrygonids was an Atlantic marine or euryhaline stingray that dispersed into freshwater, presumably during the last marine ...
openaire +3 more sources
Neotropical IchthyologyThe life history of freshwater stingrays (Potamotrygonidae) under natural conditions has been poorly documented. In this study, we investigated theperiod of activity and the habitat use of two species of the genus Potamotrygon in the upper Paraná River ...
Domingos Garrone Neto +1 more
doaj +1 more source
Eurasian jays do not copy the choices of conspecifics, but they do show evidence of stimulus enhancement [PDF]
, 2016 Corvids (birds in the crow family) are hypothesised to have a general cognitive tool-kit because they show a wide range of transferrable skills across social, physical and temporal tasks, despite differences in socioecology.
Clayton, NS +3 more
core +4 more sources
The Journal of Parasitology, 1976 Two new tetraphyllidean cestodes are described from the freshwater stingray Potamotrygon magdalenae from Colombia. The new genus Potamotrygonocestus is proposed for P. magdalenensis, which differs from Pedibothrium by having a bilobed rather than X-shaped ovary, and simple rather than bifid hooks. It further differs from Pachybothrium hutsoni by having
Brooks, Daniel R., Thorson, Thomas B.
openaire +3 more sources
Zoologia (Curitiba), 2010 Ergasilus trygonophilus sp. nov. is described from freshwater stingrays (Potamotrygon spp. and Plesiotrygon iwamae Rosa, Castello & Thorson, 1987) from the state of Pará, Brazil.
Marcus V. Domingues, Taísa M. Marques
doaj +1 more source
Anais do III Congresso Brasileiro de Biodiversidade Virtual, 2023 Elisabete Almeida Miranda +4 more
semanticscholar +1 more source
Hematologia, perfil bioquímico e hormônios da tireoide em quatro espécies de arraias de água doce do gênero Potamotrygon [PDF]
, 2015 Potamotrygonidae is a family of freshwater stingray endemic in South America. We determined the hematological and serum biochemistry parameters of Potamotrygon motoro and Potamotrygon falkneri from Parana Basin and Potamotrygon orbignyi and Potamotrygon ...
Brito, Fernando Moraes Machado +7 more
core +3 more sources
, 2007 https://nsuworks.nova.edu/occ_currents/1014/thumbnail ...
NSU Oceanographic Center
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