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Figure 6 in Description Of A New Genus With Six New Species From Southern Brazil, Uruguay And Argentina, With A Discussion Of A Putative Characid Clade (Teleostei: Characiformes: Characidae)
Figure 6. Left view of the anal fin of a male of Cyanocharax dicropotamicus showing the distribution of the anal-fin hooks (MCP 19510,41.9 mm SL).
Data from: 100-year time-series reveal little morphological change following impoundment and predator invasion in two Neotropical characids
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Fig. 6 in Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil
Fig. 6. Weight usable area (WUA) in percentage for four species at the Velhas reach in the dry scenario (a) and in the rainy scenario (b). Highest WUA is indicated in red and lowest WUA is indicated in dark blue. The reach length is 1 km. The red line indicated the area along the reach where the habitat use was observed.
Fig. 2 in Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil
Fig. 2. Suitability curves for velocity (m/s) (a), depth (b) and channel index (c) for the four studied species at the Ve- lhas river basin.
Fig. 5 in Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil
Fig. 5. Hydrodynamic (depth and water velocity) for the Velhas reach in the dry (a) and rainy (b) scenario; and for the Curimataí reach in the dry (c) the rainy (d) scenario. The reach length is 1 km.
Fig. 8 in Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil
Fig. 8. Weight usable area in percentage of total area for four species in all scenarios and reaches. The reach length is 1 km.
Fig. 7 in Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil
Fig. 7. Weight usable area (WUA) in percentage for four species at the Curimataí reach in the dry scenario (a) and in the rainy scenario (b). Highest WUA is indicated in red and lowest WUA is indicated in dark blue. The reach length is 1 km. The red line indicated the area along the reach where the habitat use was observed.
Fig. 3 in Physical habitat simulation for small-sized characid fish species from tropical rivers in Brazil
Fig. 3. Generalized additive model (GAM) for Astyanax sp. (a), Piabina argentea (b) and Serrapinnus heterodon (c). The GAM curves show the natural log contribution of each habitat function (v = velocity, d = depth and CI = channel index) to the model ln (standardized density) = constant + v + d + CI. Light gray lines around the GAM curves indicate 95% confidence intervals.
FIGURE 5 in Redescription of Astyanax guaporensis Eigenmann, 1911 (Characiformes: Characidae), a small characid from the rio Madeira basin
FIGURE 5. Rio Guaporé downstream of Pimenteiras do Oeste, Rondônia, Brazil.
Figure 43 in Description Of A New Genus With Six New Species From Southern Brazil, Uruguay And Argentina, With A Discussion Of A Putative Characid Clade (Teleostei: Characiformes: Characidae)
Figure 43. Cyanocharax alegretensis, female, same locality as Fig. 42 (MCP 26784).
Figure 34 in Description Of A New Genus With Six New Species From Southern Brazil, Uruguay And Argentina, With A Discussion Of A Putative Characid Clade (Teleostei: Characiformes: Characidae)
Figure 34. Cyanocharax lepiclastus, female, 38.5 mm SL, same locality as in Fig. 33 (MCP 14557).
Figure 41 in Description Of A New Genus With Six New Species From Southern Brazil, Uruguay And Argentina, With A Discussion Of A Putative Characid Clade (Teleostei: Characiformes: Characidae)
Figure 41. Cyanocharax alegretensis, female, 40.1 mm SL, same locality as Fig. 39 (MCP 11473).
FIGURE 6 in Morphological and immunohistochemical comparison of the pituitary gland between a tropical Paracheirodon axelrodi and a subtropical Aphyocharax anisitsi characids (Characiformes: Characidae)
FIGURE 6 | Microphotographs of sagittal sections in the pituitary gland of Paracheirodon axelrodi showing the location of βLH- A. and βFSH- C. ir cells of RPD and PPD and GH- E. ir cells of PPD. Gray box shows the area of detail microphotographs. Details of βLH- B. and βFSH- D. ir cells of RPD and PPD and GH- F. ir cells of the PPD. Black star: neurohypophysis; FSH: follicle-stimulating hormone; GH: growth hormone; LH: luteinizing hormone; PI: pars intermedia; PPD: proximal pars distalis; RPD: rostral pars distalis.
FIGURE 5 in Morphological and immunohistochemical comparison of the pituitary gland between a tropical Paracheirodon axelrodi and a subtropical Aphyocharax anisitsi characids (Characiformes: Characidae)
FIGURE 5 | Microphotographs of sagittal sections in the pituitary gland of Aphyocharax anisitsi showing the location of βFSH- A., βLH- C. and GH- E. ir cells of the PPD. Gray box shows the area of detail microphotographs. Details of βFSH- B., βLH- D. and GH- F. ir cells of the PPD. Black star: neurohypophysis; FSH: follicle-stimulating hormone; GH: growth hormone; LH: luteinizing hormone; PI: pars intermedia; PPD: proximal pars distalis; RPD: rostral pars distalis.
Fig. 22. Planaltina myersi, MNRJ 10634, a in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)
Fig. 22. Planaltina myersi, MNRJ 10634, a mature male (below), 32.5 SL and a female (above) 36.8 mm SL, Brazil: Distrito Federal, córrego Fumal, where crosses road between Brasília and Planaltina, near Planaltina, about 15°20'S 47°50'W, collected 11 Apr. 1982 by L. E. de Macedo Cardoso. Note that the pale area on the anal fin of the male is where the anal-fin hooks are concentrated and the whitish color is due to the presence of anal-fin club cells.
Fig. 21 in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)
Fig. 21. Light micrographs through anal glandular tissue of mature male Bryconadenos tanaothoros. A, part of anal gland from a male of SL 36.6 mm (USNM 352061); bar, 100 µm. B, High magnification of the anal gland of a male of SL 39.8 mm (USNM 352061) in the area of cell release showing a degenerating cell (arrow) and a depression (*) remaining after cell release; bar, 10 µm.
Fig. 15 in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)
Fig. 15. Light micrographs through gonads of Bryconadenos tanaothoros. A, mid-sagittal section through testis of mature male, SL 36.6 mm (USNM 352061); sg, spermatogonial region; arrows, spermatozeugmata within storage region of testis; bar, 200 µm. B, testis storage region of same specimen showing well-organized spermatozeugmata (z); bar, 20 µm. C, section through ovary of mature female, SL 34.4 mm (USNM 352061), showing spermatozoa (sp) within ovarian lumen; o, oocyte cytoplasm; bar, 10 µm.
Fig. 13. Knodus meridae, USNM 121469 in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)
Fig. 13. Knodus meridae, USNM 121469. Type species of Knodus, a non-inseminating species. Caudal-fin squamation. Male, SL 21.0 mm, lateral view left side, portraying scales extended out onto caudal-fin rays. Venezuela: Trujillo, lago Maracaibo basin, río Motáin, 4 km above Motáin.
Fig. 11. Cladogram depicting hypothesized relationships among Clade A in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)
Fig. 11. Cladogram depicting hypothesized relationships among Clade A characids as modified here from Malabarba and Weitzman (2003) with the addition of Bryconadenos shown as a sister group of Attonitus and the placement of genera with inseminating species as possibly more closely related to one another than to non-inseminating Clade A genera.
Fig. 5 in Reproductive biology and development of gill glands in the inseminating characid, Macropsobrycon uruguayanae Eigenmann, 1915 (Cheirodontinae: Compsurini)
Fig. 5. Relative frequency of the ranges of oocyte diameter of mature females of Macropsobrycon uruguayanae.
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