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31 results for “Chalceus”

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zenodo28/100

Fig. 4 in Sperm evolution in the family Alestidae with comparative data for the genus Chalceus (Ostariophysi: Characiformes)

Fig. 4. Spermatozoon of Brachypetersius altus. a, b, c: longitudinal sections. d, e, f, g, h, i: transverse sections from top to posterior region. The nucleus (n) is spherical and lies medial to the flagellum (f). The centriolar complex (p, d) and nuclear fossa (arrow) is medial. The proximal centriole (p) is in a right angle relative to the distal centriole (d). The cytoplasmic canal is present (asterisk). The midpiece (pi) is asymmetrical, and contains the branched or "c" shape mitochondria (m), vesicles (v) and a cytoplasmic sleeve (arrowhead). Legends: a: axoneme, cr: concentric membranous rings, d: distal centriole, f: flagellum, m: mitochondria, n: nucleus, p: proximal centriole, v: vesicle, asterisk: cytoplasmic canal, arrow: nuclear fossa, arrowhead: cytoplasmic sleeve.

opencc-by-4.0Jun 2014View details →
zenodo28/100

Fig. 9 in Sperm evolution in the family Alestidae with comparative data for the genus Chalceus (Ostariophysi: Characiformes)

Fig. 9. Spermatozoon of Chalceus epakros. a, b: longitudinal sections. c, d: transverse sections from top to posterior region. The nucleus (n) is spherical and lies medial to the flagellum (f). The centriolar complex (p, d) and nuclear fossa (arrow) is medial. The proximal centriole (p) is in a right or oblique angle relative to the distal centriole (d). The cytoplasmic canal is present (asterisk). The midpiece (pi) is asymmetrical, and contains only one "c" shape mitochondria (m), vesicles (v) and a cytoplasmic sleeve (arrowhead). The flagellum has lateral fins (fi). Legends: cr: concentric membranous rings, d: distal centriole, e: electron-lucent areas, f: flagellum, fi: flagellar fins, m: mitochondria, n: nucleus, p: proximal centriole, v: vesicle, asterisk: cytoplasmic canal, arrow: nuclear fossa, arrowhead: cytoplasmic sleeve.

opencc-by-4.0Jun 2014View details →
zenodo28/100

Fig. 6 in Sperm evolution in the family Alestidae with comparative data for the genus Chalceus (Ostariophysi: Characiformes)

Fig. 6. Spermatozoon of Brycinus lateralis. a, b, c: longitudinal sections. d, e, f, g, h, i, j: transverse sections from top to posterior region. The nucleus (n) is spherical and lies medial to the flagellum (f). The centriolar complex (p, d) and nuclear fossa (arrow) is medial. The proximal centriole (p) is in a right angle relative to the distal centriole (d). The cytoplasmic canal is present (asterisk). The midpiece (pi) is asymmetrical, and contains the spherical mitochondria (m), vesicles (v) and a cytoplasmic sleeve (arrowhead). Legends: a: axoneme, cr: concentric membranous rings, d: distal centriole, e: electronlucent areas, f: flagellum, m: mitochondria, n: nucleus, p: proximal centriole, v: vesicle, asterisk: cytoplasmic canal, arrow: nuclear fossa, arrowhead: cytoplasmic sleeve.

opencc-by-4.0Jun 2014View details →
zenodo28/100

Figure 16 in Taxonomic revision of the South American fish genus Chalceus Cuvier (Teleostei: Ostariophysi: Characiformes) with the description of three new species

Figure 16. Chalceus spilogyros sp. nov., paratype, MZUSP 76069, 91.6 mm SL, Brazil, Pará, Igarapé Jacaré, right margin of Rio Tapajós, near Boim, 3∞0¢S; 55∞15¢W.

opencc-by-4.0Jan 2004View details →
zenodo28/100

Figure 13 in Taxonomic revision of the South American fish genus Chalceus Cuvier (Teleostei: Ostariophysi: Characiformes) with the description of three new species

Figure 13. Chalceus erythrurus, holotype of Pellegrinina heterolepis, ANSP 8150, 95.8 mm SL (type locality inexact, South America, see text for details).

opencc-by-4.0Jan 2004View details →
zenodo28/100

Figure 11 in Taxonomic revision of the South American fish genus Chalceus Cuvier (Teleostei: Ostariophysi: Characiformes) with the description of three new species

Figure 11. Chalceus erythrurus, male, INPA 16190, 149.3 mm SL, Brazil, Amazonas, Rio Amazonas, Ilha do Careiro, Igapó Terra Nova.

opencc-by-4.0Jan 2004View details →
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Figure 9 in Taxonomic revision of the South American fish genus Chalceus Cuvier (Teleostei: Ostariophysi: Characiformes) with the description of three new species

Figure 9. Map of northern portion of South America showing geographical distribution of Chalceus macrolepidotus (type locality inexact, Brazil; 1 = type locality of C. ararapeera, Essequibo River, Guyana; 2 = geographically disjunct population tentatively identified as C. macrolepidotus). Some symbols represent more than one locality or lot of specimens.

opencc-by-4.0Jan 2004View details →
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Figure 6 in Taxonomic revision of the South American fish genus Chalceus Cuvier (Teleostei: Ostariophysi: Characiformes) with the description of three new species

Figure 6. Chalceus macrolepidotus, juvenile, AMNH 214938, 37.3 mm SL, Guyana, Bartica, junction Mazaruni-Cuyuni and Essequibo rivers.

opencc-by-4.0Jan 2004View details →
zenodo28/100

Figure 3 in Taxonomic revision of the South American fish genus Chalceus Cuvier (Teleostei: Ostariophysi: Characiformes) with the description of three new species

Figure 3. Mesethmoid of Chalceus spilogyros sp. nov., paratype, MZUSP 76069, 122.7 mm SL, dorsal view, anterior at top.

opencc-by-4.0Jan 2004View details →
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Figure 1 in Taxonomic revision of the South American fish genus Chalceus Cuvier (Teleostei: Ostariophysi: Characiformes) with the description of three new species

Figure 1. Maxilla and supramaxilla (arrowed) of Chalceus erythrurus, MZUSP 20385, 104.6 mm SL, lateral view, anterior to left.

opencc-by-4.0Jan 2004View details →
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Figure 2 in Taxonomic revision of the South American fish genus Chalceus Cuvier (Teleostei: Ostariophysi: Characiformes) with the description of three new species

Figure 2. Premaxilla of Chalceus erythrurus, MZUSP 20385, 104.6 mm SL, right side, medial view, anterior to left.

opencc-by-4.0Jan 2004View details →

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