Results 1 to 10 of about 258 (157)
Neotropical Ichthyology, 2017 Bryconamericus is the most diverse genus within Stevardiinae, comprising 61 valid species distributed in Cis- and Trans-Andean basins from Panama in Central America to northern Argentina in South America. Three species are known from the upper rio Paraná
OSCAR Akio Shibatta, Fernando Jerep
exaly +5 more sources
Cytogenetic characterization of a population of Bryconamericus aff. iheringii (Characidae,Tetragonopterinae) [PDF]
Genetics and Molecular Biology, 2003 A cytogenetic analysis of thirteen specimens of Bryconamericus aff. Iheringii revealed a diploid number of 52 chromosomes and a karyotype of 8M+22SM+10ST+12A with a fundamental number (FN) of 92.
Ana Dias +2 more
exaly +6 more sources
Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil. [PDF]
J Fish BiolAbstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Kampfert LEP +5 more
europepmc +2 more sources
Establishing new grid-size-dependent attributes to rank areas of endemism for conservation priorities. [PDF]
CladisticsAbstract Delineating Areas of Endemism (AEs) is crucial for identifying priority areas for biodiversity conservation in a spatial planning framework. Endemicity Analysis in the NDM/VNDM software is one of the primary methodologies for its delineation.
Frota A, da Graça WJ.
europepmc +2 more sources
Linking anatomical and histological traits of the digestive tract to resource consumption and assimilation of omnivorous tetra fishes. [PDF]
Ecol EvolThis study investigates digestive traits and dietary patterns in omnivorous tetra fishes from the Iguaçu River basin, known for high endemism. The researchers found that while the tetra fishes shared histological structures, anatomical differences in digestive traits correlated with distinct dietary preferences.
Neves MP +5 more
europepmc +2 more sources
Neotropical Ichthyology, 2018 The chromosomal location of 5S rRNA and U2 snRNA genes of Piabina argentea, Piabarchus stramineus and two Bryconamericus species from two different Brazilian river basins were investigated, in order to contribute to the understanding of evolutionary ...
Diovani Piscor +2 more
exaly +3 more sources
Revisión taxonómica y geográfica de Bryconamericus peruanus (Teleostei, Characidae)
Revista Mexicana de Biodiversidad, 2011 Se efectúa un análisis taxonómico y geográfico de Bryconamericus peruanus y se compara con las especies de este género presentes en las vertientes del Pacífico sur en Colombia, Ecuador y Perú.
César Román-Valencia +2 more
doaj +3 more sources
Swimming performance of the small characin Bryconamericus stramineus (Characiformes: Characidae) [PDF]
Zoologia, 2010 Very little research has been conducted on the swimming capacity of Neotropical fish. The few studies available have focused on large migratory species. The present study used fixed and increasing velocity tests to determine prolonged and sustained speeds of the "pequira", Bryconamericus stramineus Eigenmann, 1908, a small, abundant species found in ...
Paulo Santos Pompeu, Pompeu Paulo S
exaly +6 more sources
Multiple NORs in Bryconamericus aff. exodon (Osteichthyes, Characidae, Tetragonopterinae) [PDF]
Hereditas, 2002 Fifteen examples of Bryconamericus aff. exodon from the Três Bocas stream in the basin of the Tibagi river (Parana, Brazil) were analyzed. They presented a diploid number of 52 chromosomes. Multiple NORS were detected by silver nitrate impregnation in the telomeric region on the short or long arm of different chromosomes, showing a variation from 2 to ...
Ana Dias
exaly +3 more sources
Revista Mexicana de Biodiversidad, 2011 Se efectúa un análisis taxonómico y geográfico de Bryconamericus peruanus y se compara con las especies de este género presentes en las vertientes del Pacífico sur en Colombia, Ecuador y Perú.
César Román-Valencia +2 more
doaj +1 more source