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41 results for “Oligosarcus”
Fig. 9. a. Oligosarcus paranensis, NUP 303, 82.0 in Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated
Fig. 9. a. Oligosarcus paranensis, NUP 303, 82.0 mm SL, Fiú Reservoir (rio Apucaraninha), Tamarana, State of Paraná. b. Oligosarcus pintoi, NUP 1772, 68.4 mm SL, rio Piquiri, Mariluz, State of Paraná. c. Psellogrammus kennedyi, 30.5 mm SL, fresh specimen, uncat. d. Aphyocharax anisitsi, 38.6 mm SL, fresh specimen, uncat. e. Aphyocharax dentatus, 48.0 mm SL, fresh specimen, uncat. f. Aphyocharax sp., NUP 3225, 33.4 mm SL, lagoa do Bilunga, Taquarussu, State of Mato Grosso do Sul. g. Galeocharax gulo, NUP 263, 200.0 mm SL, rio Paraná, Porto Rico, State of Paraná. h. Roeboides descalvadensis, NUP 3286, 88.8 mm SL, lagoa do Bilunga, Taquarussu, State of Mato Grosso do Sul.
Figure 3 in First record of Oligosarcus itau (Characiformes: Characidae) outside the type locality, and second after the description
Figure 3. Jaws, palatine and ectopterygoid of Oligosarcus itau CI-FML 8080. 49.8 mm SL. Anterior to left. Lateral view.
Figure 2 in First record of Oligosarcus itau (Characiformes: Characidae) outside the type locality, and second after the description
Figure 2. Specimens of Oligosarcus itau reported herein. CI-FML 8080 (first and second) CI-FML 8079 (below). 49.7- 51.7 mm SL.
Figure 1 in First record of Oligosarcus itau (Characiformes: Characidae) outside the type locality, and second after the description
Figure 1. Known geographical distribution of Oligosarcus itau, Río Bermejo basin in Salta, and Jujuy province, northwestern Argentina. Red circle is the type locality, yellow circles are new records herein reported.
FIGURE 2 in Phylogeography of Oligosarcus acutirostris (Characiformes: Characidae): testing biogeographic hypotheses in the Northeastern Mata Atlântica freshwater ecoregion
FIGURE 2 | A. Map showing part of the Northeastern Mata Atlântica freshwater ecoregion (NMAF) and the distribution of Oligosarcus acutirostris samples analyzed in this study. Adjacent freshwater ecoregions sensu Abell et al. (2008): (327) São Francisco, (329) Paraíba do Sul, and (344) Upper Paraná. Costal paleodrainages based on Thomaz, Knowles (2018): (107) Santo Antônio + João de Tiba and (110) Mucuri + Barra Seca; B and C. Haplotype networks showing the genetic connectivity among the haplotypes of O. acutirostris, which are represented by circles, the size proportional to their frequencies. Each trace corresponds to a single mutation. Colors correspond to the sampled river basins as in Fig. 2A; B. Haplotype network based on COI dataset (604 bp, 24 specimens, 11 haplotypes). Black circles represent median vectors; C. Haplotype network based on Myh6 dataset (587 bp, 27 specimens, five haplotypes).
FIGURE 1 in Phylogeography of Oligosarcus acutirostris (Characiformes: Characidae): testing biogeographic hypotheses in the Northeastern Mata Atlântica freshwater ecoregion
FIGURE 1 | Bayesian phylogenetic trees of Oligosarcus acutirostris obtained in this study indicating the relationships among analyzes specimens. Numbers at branches are posterior probabilities. A. Topology based on mitochondrial gene cytochrome oxidase I (COI, 604 bp); B. Topology based on nuclear gene myosin heavy chain 6 cardiac muscle alpha (Myh6, 587 pb); and C. Topology based on concatenated dataset (COI+Myh6, 1,191 bp). The highlighted colors in the topologies represent each sampled river basin as indicated in the legend (below/right) and showed in Fig. 2A.
Fig. 2. a in Oligosarcus jacuiensis (Characiformes: Characidae), a new species from the Uruguay and Jacuí River basins, southern Brazil
Fig. 2. a) Oligosarcus jacuiensis, new species, MZUSP 104604, 141 mm SL. b) O. acutirostris, MZUSP 90766, 117 mm SL. Right lateral view of premaxillae. Black arrow indicates foramen.
Fig. 4 in Oligosarcus jacuiensis (Characiformes: Characidae), a new species from the Uruguay and Jacuí River basins, southern Brazil
Fig. 4. Orbital diameter as a function of standard length for Oligosarcus jacuiensis, new species, and O. jenynsii.
Fig. 3 in Oligosarcus jacuiensis (Characiformes: Characidae), a new species from the Uruguay and Jacuí River basins, southern Brazil
Fig. 3. Map of central and southeastern South America showing the collecting sites (open dots) and the type-locality (black dot) of Oligosarcus jacuiensis.
Figure 5 in First record of Oligosarcus itau (Characiformes: Characidae) outside the type locality, and second after the description
Figure 5. La Ciénaga dam 24°25'50.10''S, 65°16'41.0''W. El Carmen Department, Jujuy Province.
Figure 4 in First record of Oligosarcus itau (Characiformes: Characidae) outside the type locality, and second after the description
Figure 4. Las Pavas River at 24º26'37.7''S, 65º13'01.3"W, El Carmen Department, Jujuy Province.
Fig. 1 in Oligosarcus jacuiensis (Characiformes: Characidae), a new species from the Uruguay and Jacuí River basins, southern Brazil
Fig. 1. Oligosarcus jacuiensis, holotype, MCP 28980, female, 153 mm SL, rio Jacuí.
FIGURE 11 in A threatened new species of Oligosarcus and its phylogenetic relationships, with comments on Astyanacinus (Teleostei: Characidae)
FIGURE 11. Oligosarcus pintoi, CI-FML 4015, 28.4 mm SL: Detail of right suspensorium and lower jaw; laterodorsal view, reversed image. 161(0) cartilage dorsal to ectopterygoid parallel and close to mesopterygoid margin, ECP: ectopterygoid, MSP: mesopterygoid. Scale bar=1 mm.
FIGURE 9 in A threatened new species of Oligosarcus and its phylogenetic relationships, with comments on Astyanacinus (Teleostei: Characidae)
FIGURE 9. Consensus tree between most parsimonious trees obtained under implied weighting showing all the species in the clade of characids lacking a bony supraorbital. Added species relative to Mirande (2010) and clades in which they are included are highlighted. Number of nodes as used in the text are shown above branches.
FIGURE 10 in A threatened new species of Oligosarcus and its phylogenetic relationships, with comments on Astyanacinus (Teleostei: Characidae)
FIGURE 10. Oligosarcus jenynsii, CI-FML 3943, 60.8 mm SL: Detail of right suspensorium and lower jaw; laterodorsal view, reversed image. 161(1) laterally displaced cartilage dorsal to ectopterygoid, ECP: ectopterygoid, MSP: mesopterygoid. Scale bar=1 mm.
FIGURE 8 in A threatened new species of Oligosarcus and its phylogenetic relationships, with comments on Astyanacinus (Teleostei: Characidae)
FIGURE 8. Unnamed stream where Oligosarcus itau was captured, tributary to the Río Itau, Río Bermejo basin, Salta, Argentina.
FIGURE 6 in A threatened new species of Oligosarcus and its phylogenetic relationships, with comments on Astyanacinus (Teleostei: Characidae)
FIGURE 6. Oligosarcus itau, CI-FML 3858, 61.4 mm SL: Detail of right suspensorium and lower jaw, showing ectopterygoid teeth; medial view. ECP: ectopterygoid, MSP: mesopterygoid, PAL: Palatine. Scale bar=1 mm.
FIGURE 7 in A threatened new species of Oligosarcus and its phylogenetic relationships, with comments on Astyanacinus (Teleostei: Characidae)
FIGURE 7. Known geographical distribution of Oligosarcus itau, Río Bermejo, Salta, northwestern Argentina, composed only by its type locality. Satellital image at bottom amplifies highlighted area at top right.
FIGURE 4 in A threatened new species of Oligosarcus and its phylogenetic relationships, with comments on Astyanacinus (Teleostei: Characidae)
FIGURE 4. Oligosarcus itau, CI-FML 3858, 61.4 mm SL: Detail of neurocranium from lateral view; right side, reversed image. 13(0): presence of temporal foramen, 48(0): rhinosphenoid not proyected between olfactory nerves, 366(0): sphenotic spine not notched, LAP: levator arcus palatini, OLN: olfactory nerve, PTO: pterotic, SPH: sphenotic. Scale bar=1 mm.
FIGURE 3 in A threatened new species of Oligosarcus and its phylogenetic relationships, with comments on Astyanacinus (Teleostei: Characidae)
FIGURE 3. Oligosarcus itau, CI-FML 3858, 61.4 mm SL: Upper jaw and nasal in medial view. PMX: right premaxilla, MAX: right maxilla. Scale bar=1 mm.
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