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214 results for “Stevardiinae”
FIGURE 4 in Gephyrocharax machadoi, a new species of Stevardiinae (Characiformes: Characidae) from the Rio Paraguai basin, central Brazil
FIGURE 4. Caudal-fin lobe of Gephyrocharax machadoi sp. n. showing squamation of ventral portion. A) Lateral view, left side of holotype, CPUFMT 2429, sexually active male, 37.6 mm SL. B) Lateral view, left side of paratype, CPUFMT 2428, sexually active female, 39.3 mm SL.
FIGURE 1 in Gephyrocharax machadoi, a new species of Stevardiinae (Characiformes: Characidae) from the Rio Paraguai basin, central Brazil
FIGURE 1. Gephyrocharax machadoi sp. n., A) male, holotype, CPUFMT 2429, 37.6 mm SL; B) female, paratype, CPUFMT 2428, 38.1 mm SL.
FIGURE 8 in Gephyrocharax machadoi, a new species of Stevardiinae (Characiformes: Characidae) from the Rio Paraguai basin, central Brazil
FIGURE 8. Spermatozoon of Gephyrocharax machadoi. A,B,C,F: Longitudinal sections. D,E,G,H,I,J,K,L: Cross sections. A,B: Granular chromatin is present in the nucleus (n), which is drop-shaped and elongated towards the flagellum (f). The midpiece contains elongated mitochondria (m) and vesicles (v). C,D,E: The nucleus has two lobes that involve the initial portion of the flagellum (f). F: The double nuclear fossa (arrow) partially houses proximal centriole (p) which is anterior and forms an acute angle in relation to the distal centriole (d). G,H,I,J,K: Section of anterior portion of nucleus (n) that displays mitochondria (m). Inside letter I is the axoneme with classical pattern of microtubules (9+2). L: Note the presence of the cytoplasmic sleeve (arrowhead). Asterisk: cytoplasmic canal. Bars: A,B,C,D,E,F: 1 µm. G,H,I,J,K,L: 0.6 µm.
FIGURE 3 in Gephyrocharax machadoi, a new species of Stevardiinae (Characiformes: Characidae) from the Rio Paraguai basin, central Brazil
FIGURE 3. Map of South America showing the type locality (star) of Gephyrocharax machadoi sp. n. Black circle represents other collection sites.
FIGURE 7 in Gephyrocharax machadoi, a new species of Stevardiinae (Characiformes: Characidae) from the Rio Paraguai basin, central Brazil
FIGURE 7. Spermiogenesis in Gephyrocharax machadoi n. sp. A,B,C,D,E: Longitudinal sections. A: The nucleus (n) initially is spherical. B,C,D,E: The chromatin gradually starts compaction process. B,C: The nucleus is shifted to up to the centriolar complex, where proximal (p) and distal (d) centrioles are located, and later it elongates towards the flagellum (C–E). The proximal centriole is anterior and oblique in relation to the distal centriole. D,E: The mitochondria (m) and vesicles (v) are distributed through the midpiece (pi). Asterisk: cytoplasmic canal, f: flagellum, arrow: nuclear fossa. Bars: A,B,C,D,E: 1µm.
FIGURE 6 in Gephyrocharax machadoi, a new species of Stevardiinae (Characiformes: Characidae) from the Rio Paraguai basin, central Brazil
FIGURE 6. Light micrographs through mature ovaries of Gephyrocharax machadoi sp. n., CPUFMT 2387, 34.9 mm SL, arrow indicates spermatozoa.
FIGURE 2 in Gephyrocharax machadoi, a new species of Stevardiinae (Characiformes: Characidae) from the Rio Paraguai basin, central Brazil
FIGURE 2. Gephyrocharax machadoi sp. n., CPUFMT 1463, paratype, 41.4 mm SL. Upper and lower jaws, left side, lateral view.
FIGURE 5 in A new species of Creagrutus (Characidae: Stevardiinae) from the upper Río Magdalena, Colombia
FIGURE 5. Type locality of Creagrutus dulima, Colombia, Departamento Tolima, Ibagué, upper Río Magdalena drainage, Río Alvarado drainage, quebrada Chumba. A. General view of the locality; B: Rapids at the quebrada Chumba, the micro-habitat occupied by Creagrutus dulima.
FIGURE 3 in A new species of Creagrutus (Characidae: Stevardiinae) from the upper Río Magdalena, Colombia
FIGURE 3. Creagrutus dulima, CZUT-IC 18773, paratype, 92.9 mm SL, living specimen immediately before preservation, in dark (A) and white (B) backgrounds.
FIGURE 2 in A new species of Creagrutus (Characidae: Stevardiinae) from the upper Río Magdalena, Colombia
FIGURE 2. Pelvic-fin hooks in A: Creagrutus dulima, CZUT-IC 17666, 66.9 mm SL, B: Creagrutus paralacus, CZUT-IC 17667, 50.6 mm SL.
FIGURE 1 in A new species of Creagrutus (Characidae: Stevardiinae) from the upper Río Magdalena, Colombia
FIGURE 1. Creagrutus dulima, CZUT-IC 17663, holotype, 70.9 mm SL, Colombia, Departamento Tolima, Ibagué, upper Río Magdalena drainage, quebrada Chumba.
FIGURE 33 in A Systematic Review Of Diapoma (Teleostei: Characiformes: Characidae: Stevardiinae: Diapomini) With Descriptions Of Two New Species From Southern Brazil
FIGURE 33: Diapoma pyrrhopteryx, MCP 44104, adult male above, SL 51.0 mm, and MCP 13368, adult female below, SL 44.0 mm.
FIGURE 35 in A Systematic Review Of Diapoma (Teleostei: Characiformes: Characidae: Stevardiinae: Diapomini) With Descriptions Of Two New Species From Southern Brazil
FIGURE 35: Diapoma pyrrhopteryx, MZUSP 104323, C&S, sexually active male, SL 52.0 mm; opercular bones, lateral view, left side. OP, opercle; POP, preopercle; IOP, interopercle; SOP, subopercle.
FIGURE 37 in A Systematic Review Of Diapoma (Teleostei: Characiformes: Characidae: Stevardiinae: Diapomini) With Descriptions Of Two New Species From Southern Brazil
FIGURE 37: Diapoma pyrrhopteryx, MZUSP 104323, C&S, sexually active male, SL 52.0 mm jaws and dentition, lateral view, left side, anterior at left.
FIGURE 34 in A Systematic Review Of Diapoma (Teleostei: Characiformes: Characidae: Stevardiinae: Diapomini) With Descriptions Of Two New Species From Southern Brazil
FIGURE 34: Diapoma pyrrhopteryx, MCP 44377. Color pictures of adult male, above, SL 72.5 mm and adult female below, SL 65.4 mm.
FIGURE 32 in A Systematic Review Of Diapoma (Teleostei: Characiformes: Characidae: Stevardiinae: Diapomini) With Descriptions Of Two New Species From Southern Brazil
FIGURE 32: Diapoma speculiferum, MZUSP 28247, C&S, sexually active male, SL 33.5 mm; pelvic-fin rays, ventral view, left side, showing pelvic-fin hooks.
FIGURE 30 in A Systematic Review Of Diapoma (Teleostei: Characiformes: Characidae: Stevardiinae: Diapomini) With Descriptions Of Two New Species From Southern Brazil
FIGURE 30: Diapoma speculiferum, MZUSP 28247, C&S, sexually active male, SL 33.5 mm; caudal-fin squamation of ventral portion of caudal-fin lobe, lateral view, left side.
FIGURE 28 in A Systematic Review Of Diapoma (Teleostei: Characiformes: Characidae: Stevardiinae: Diapomini) With Descriptions Of Two New Species From Southern Brazil
FIGURE 28: Diapoma speculiferum, MZUSP 28247, C&S, sexually active male, SL 33.5 mm; opercular bones, lateral view, left side. OP, opercle; POP, preopercle; IOP, interopercle; SOP, subopercle.
FIGURE 29 in A Systematic Review Of Diapoma (Teleostei: Characiformes: Characidae: Stevardiinae: Diapomini) With Descriptions Of Two New Species From Southern Brazil
FIGURE 29: Diapoma speculiferum, MZUSP 28247, C&S, sexually active male, SL 33.5 mm; jaws and dentition, lateral view, left side, anterior at left.
FIGURE 24 in A Systematic Review Of Diapoma (Teleostei: Characiformes: Characidae: Stevardiinae: Diapomini) With Descriptions Of Two New Species From Southern Brazil
FIGURE 24: Diapoma thauma, MCN 18903; histological section of ovary of adult female; arrow points to spermatozoa.
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