| General information |
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Astyanax fasciatus G. Cuvier, 1819 |
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| Common name | Banded astyanax |
| Synonyms |
Chalceus fasciatus Cuvier, 1819 Astyanax fasciatus fasciatus (Cuvier, 1819) Astianax fasciatus (Cuvier, 1819) Tetragonopterus rutilus Jenyns, 1842 Tetragonopterus viejita Valenciennes, 1850 Salmo lambari Natterer, 1859 Tetragonopterus panamensis Gunther, 1864 Tetragonopterus humilis Gunther, 1864 Tetragonopterus microphthalmus Gunther, 1864 Tetragonopterus finitimus Bocourt, 1868 Tetragonopterus belizianus Bocourt, 1868 Tetragonopterus cobanensis Bocourt, 1868 Tetragonopterus oaxacanensis Bocourt, 1868 Astyanax carolinae Gill, 1870 Tetragonopterus oerstedii Lutken, 1875 Tetragonopterus orstedii Lutken, 1875 Tetragonopterus cuvieri Lutken, 1875 Tetragonopterus rutilus jequitinhonhae Steindachner, 1877 Astyanax albeolus Eigenmann, 1908 Tetragonopterus macrophthalmus Regan, 1908 Astyanax regani Meek, 1909 Astyanax grandis Meek & Hildebrand, 1912 Astyanax heterurus Eigenmann & Wilson, 1914 Astyanax aeneus costaricensis Meek, 1914 Astyanax hanstroemi Dahl, 1943 Astyanax fasciatus orteguasae Fowler, 1943 |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characidae. |
| Geographical distribution |
Mexico; Brazil; Argentina; Colombia; Venezuela; Uruguay; Panama; Costa Rica; Guatemala; Belize |
| Occurrence |
native: Mexico; native: Brazil; native: Argentina; native: Colombia; native: Venezuela; native: Uruguay; native: Panama; native: Costa Rica; native: Guatemala; native: Belize |
| Remarks |
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| Karyological information |
| Record 1 |
| Geographical area of study |
Mogi-Guacu River, Pirassununga, Sao Paulo, Brazil |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
46 |
| Karyotype formula |
12M+20SM+10ST+4A |
| Fundamental arm number |
78 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
C-banding showed heterochromatin blocks on the long arm of chr. 8,10,11, 18, 19 & 22. |
| Reference |
Daniel-Silva MFZ, Almeida Toledo LFD (2001). Chromosome R-banding pattern and conservation of a marker chromosome in four species, genus Astyanax (Characidae, Tetragonopterinae), Caryologia, 54 (3): 209-215. |
| Record 2 |
| Geographical area of study |
São Francisco river (Três Marias, Minas Gerais), Brazil. |
| Source of chromosomes |
Kidney and gill cells. |
| Number of specimens with sex |
3 (1 male, 2 female) |
| Diploid chromosome number |
48 |
| Karyotype formula |
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| Fundamental arm number |
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| Chromosome length |
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| Sex chromosome |
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| Chromosome staining/banding/FISH |
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| Reference |
Carvalho ML, Oliveira C, Navarrete MC, Froehlich O, Foresti F (2002). Nuclear DNA content determination in Characiformes fish (Teleostei, Ostariophysi) from the Neotropical region. Genetics and Molecular Biology, 25(1): 49-55. |
| Record 3 |
| Geographical area of study |
Mogi Guaca River, Brazil |
| Source of chromosomes |
Kidney and gills |
| Number of specimens with sex |
1 male and 1 non-determined sex |
| Diploid chromosome number |
46 |
| Karyotype formula |
32m/sm+14st/a |
| Fundamental arm number |
78 |
| Chromosome length |
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| Sex chromosome |
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| Chromosome staining/banding/FISH |
Ag NORs location: distal portion of the short arm of 2 SM; 5S probe hybridization: pericentromeric region of 2 M and of 2 A; 28S probe hybridization: distal portion of the short arm of 2 SM; co-localize with the 5S in 2 M and 2 A. |
| Reference |
Almeida-Toledo LF, Ozouf-Costaz C, Foresti F, Bonillo C, Porto-Foresti F, Daniel-Silvaa MFZ (2002). Conservation of the 5S-bearing chromosome pair and co-localization with major rDNA clusters in five species of Astyanax (Pisces, Characidae). Cytogenet. Genome Res., 97: 229–233.
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| Record 4 |
| Geographical area of study |
Pindorama and Lopei streams (upper Paraná river basin), Brazil. |
| Source of chromosomes |
Anterior kidney cells. |
| Number of specimens with sex |
19 (8 male, 11 female) |
| Diploid chromosome number |
50 |
| Karyotype formula |
8m+18sm+10st+14a and 8m+14sm+12st+16a |
| Fundamental arm number |
- |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
In Pindorama stock, AgNORs present terminally in long arm of chromosomes pairs 5, 10 and in pair 20 and in short arm on pairs 16, 23. In Lopei stock, AgNORs found terminally on long arm of chromosome pairs 10, 20 and in short arm in pairs 3, 14 and both arms in pair 19. C-bands observed as conspicuous block terminally on long arm in chromosome pair 20 in Pindorama stock, and terminally on long arm in pairs 19, 20. |
| Reference |
Yano CF, Filho OM, Margarido VP (2014). Interpopulational comparative cytogenetics analysis among three Astyanax (Characiformes: Incertae Sedis) species of two streams of upper Paraná River basin, Brazil. Biologia (Section Zoology), 69/6: 790-798. |
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