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214 results for “Stevardiinae”
Fig. 1 in Conserved number of U 2 snDNA sites in Piabina argentea, Piabarchus stramineus and two Bryconamericus species (Characidae, Stevardiinae)
Fig. 1. Sequential metaphases of the chromosomal locations of U2 snDNA and 5S rDNA clusters using two-color FISH in species of the genera Piabina, Piabarchus and Bryconamericus. The arrows indicate the fluorescent signals. Note that, in P. stramineus, the two repetitive DNA are located adjacently on the same pair. Scale bar = 10 µm.
Fig. 2 in Conserved number of U 2 snDNA sites in Piabina argentea, Piabarchus stramineus and two Bryconamericus species (Characidae, Stevardiinae)
Fig. 2. Scheme showing the number of U2 snDNA sites on the real pairs and ideograms in species of the genera Piabina, Piabarchus and Bryconamericus. Note the size heteromorphism of U2 snDNA clusters between homologous chromosomes in P. argentea.
Fig. 2 in Molecular phylogeny and biogeographic history of the Neotropical tribe Glandulocaudini (Characiformes: Characidae: Stevardiinae)
Fig. 2. Calibrated Bayesian tree based on concatenated dataset (16S+COI+RAG2, 1,829 bp) showing the relationships within the Glandulocaudini. Numbers at branches are posterior probabilities and bootstrap values. Species/populations from Brazilian crystalline shield are highlighted in brown (upland areas) and species/populations from Brazilian coastal drainages in green (lowland areas).
FIGURE 7 in Two new species of Knodus (Characidae: Stevardiinae) from the upper rio Tocantins basin, with evidence of ontogenetic meristic changes
FIGURE 7 | Knodus obolus, paratypes. Ontogenetic and polymorphic variation of the body shape and colour patterns. All from the ribeirão Dois Irmãos drainage, upper Tocantins basin in Pirenópolis, Goiás State, Brazil. A. NUP 22668, 56.9 mm SL. B. NUP 22668, 53.2 mm SL. C. NUP 22668, 49.6 mm SL. D. NUP 22668, 45.0 mm SL. E. NUP 22668, 33.1 mm SL.
FIGURE 2 in Two new species of Knodus (Characidae: Stevardiinae) from the upper rio Tocantins basin, with evidence of ontogenetic meristic changes
FIGURE 2 | Knodus rufford, holotype, NUP 22661, 35.4 mm SL, ribeirão Dois Irmãos, tributary to the rio do Peixe, tributary to the rio das Almas, tributary to the rio Maranhão, tributary to the rio Tocantins, Municipality of Pirenópolis, Goiás State, Brazil.
FIGURE 10 in Two new species of Knodus (Characidae: Stevardiinae) from the upper rio Tocantins basin, with evidence of ontogenetic meristic changes
FIGURE 10 | Knodus aff. breviceps from the rio das Almas basin, upper Tocantins basin (collected in syntopy with K. obolus and K. rufford). A. NUP 22666, 55.3 mm SL. B. NUP 22662, 42.0 mm SL. C. NUP 22665, 28.2 mm SL. D. NUP 22665, 23.9 mm SL.
FIGURE 6 in Two new species of Knodus (Characidae: Stevardiinae) from the upper rio Tocantins basin, with evidence of ontogenetic meristic changes
FIGURE 6 | Knodus obolus, holotype, NUP 22667, 46.4 mm SL, ribeirão Dois Irmãos, tributary to the rio do Peixe, tributary to the rio das Almas, tributary to the rio Maranhão, tributary to the rio Tocantins, Municipality of Pirenópolis, Goiás State, Brazil.
FIGURE 5 in Two new species of Knodus (Characidae: Stevardiinae) from the upper rio Tocantins basin, with evidence of ontogenetic meristic changes
FIGURE 5 | Partial map of South America, showing the known geographic distribution of Knodus rufford and K. obolus. The red star encompasses the type locality and other sampling sites that are too close to be represented as separate points.
FIGURE 1 in Two new species of Knodus (Characidae: Stevardiinae) from the upper rio Tocantins basin, with evidence of ontogenetic meristic changes
FIGURE 1 | Schematic representation of four types of vertebra. In A., only the proximal portion of the ribs is shown. In B., the small bony fragment close to the tip of the transverse process in the left is an underdeveloped rib shown in full. In C., the haemal spine is not fused to the tip of the contralateral transverse processes, which meet each other medially. Notice that in D. the fusion is complete, but the bony ring, present in B. and C., is absent.
FIGURE 3 in Two new species of Knodus (Characidae: Stevardiinae) from the upper rio Tocantins basin, with evidence of ontogenetic meristic changes
FIGURE 3 | Knodus rufford, paratypes. Ontogenetic and polymorphic variation of the body shape and colour patterns. All from the ribeirão Dois Irmãos drainage, upper Tocantins basin in Pirenópolis, Goiás State, Brazil. A. NUP 22669, 39.2 mm SL. B. CPUFMT 6835, 31.7 mm SL. C. NUP 22669, 28.1 mm SL. D. CPUFMT 6835, 25.2 mm SL.
FIGURE 9 in Two new species of Knodus (Characidae: Stevardiinae) from the upper rio Tocantins basin, with evidence of ontogenetic meristic changes
FIGURE 9 | Knodus aff. breviceps, regression analysis of the number of scale series between dorsal-fin origin and lateral line. R2 = 0.26; p = 0.0003.
FIGURE 8 in Phylogenetic relationships and description of two new species of Diapoma (Characidae: Stevardiinae) from the La Plata River basin
FIGURE 8 | Bayesian tree showing the phylogenetic relationships within Diapoma inferred by the concatenated dataset (12S, 16S, COI, MYH6, ptchd1, RAG1, RAG2, total of 5067pb).
FIGURE 5 in Phylogenetic relationships and description of two new species of Diapoma (Characidae: Stevardiinae) from the La Plata River basin
FIGURE 5 | Holotype of Diapoma potamohadros, UFRGS 28700, male, 48.6 mm SL, Brazil, Paraná, Quedas do Iguaçu, Salto Osório Reservoir.
FIGURE 4 in Phylogenetic relationships and description of two new species of Diapoma (Characidae: Stevardiinae) from the La Plata River basin
FIGURE 4 | Map of part of southern Brazil, Paraguay, Uruguay, and east Argentina showing the geographic distributions of Diapoma pampeana (white squares) and D. potamohadros (paratypes with pink circles, and non-types with plus sign in red). Stars indicate type localities.
FIGURE 3 in Phylogenetic relationships and description of two new species of Diapoma (Characidae: Stevardiinae) from the La Plata River basin
FIGURE 3 | Diapoma pampeana, paratypes, UFRGS 8123, A. Male, 27.2 mm SL, B. Female, 26.0 mm SL, Caraguatá creek, tributary of the Tacuarembó River, Ruta 26, Las Toscas, Tacuarembó, Uruguay. Photograph taken just after fixation in formalin.
FIGURE 2 in Phylogenetic relationships and description of two new species of Diapoma (Characidae: Stevardiinae) from the La Plata River basin
FIGURE 2 | Left premaxilla, maxilla and dentary of Diapoma pampeana, UFRGS 8464, 31.9 mm SL, paratype.
FIGURE 9 in Phylogenetic relationships and description of two new species of Diapoma (Characidae: Stevardiinae) from the La Plata River basin
FIGURE 9 | Bayesian species tree of Diapoma obtained from multilocus sequences (12S, 16S, COI, MYH6, ptchd1, RAG1, RAG2, total of 5067pb).
FIGURE 1 in Phylogenetic relationships and description of two new species of Diapoma (Characidae: Stevardiinae) from the La Plata River basin
FIGURE 1 | Holotype of Diapoma pampeana, male, UFRGS 28705, 29.6 mm SL, Brazil, Rio Grande do Sul, Bagé, Sanga Cinco Saltos, affluent of Negro River, BR-153, between Aceguá and Bagé.
FIGURE 6 in Phylogenetic relationships and description of two new species of Diapoma (Characidae: Stevardiinae) from the La Plata River basin
FIGURE 6 | Right premaxilla, maxilla and dentary of Diapoma potamohadros, UFRGS 41353, 51.4 mm SL, paratype.
FIGURE 7 in Phylogenetic relationships and description of two new species of Diapoma (Characidae: Stevardiinae) from the La Plata River basin
FIGURE 7 | Anal fin of Diapoma potamohadros, MACN-ict 10364, A. Male, 37.8 mm SL; B. Female, 37.6 mm SL. Lateral view, left side. Scale bars = 1 mm.
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