| General information |
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Astyanax altiparanae Garutti & Britski, 2000 |
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| Synonyms |
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| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characidae. |
| Geographical distribution |
Brazil |
| Occurrence |
native: Brazil |
| Importance |
Food |
| Karyological information |
| Record 1 |
| Geographical area of study |
Ribeirao Claro river in Sao Paulo state (SP), Brazil |
| Source of chromosomes |
Not reported |
| Number of specimens with sex |
05 (02 males; 03 males) |
| Diploid chromosome number |
50 |
| Karyotype formula |
8m+28sm+8st+6a |
| Fundamental arm number |
94 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
Three chromosomes contained Ag-NORs:Blocks of heterochromatin in the pericentromeric regions of seven pairs; GC-rich regions were also present in the same places as the Ag-NORs ;18S rDNA probe labeled terminal regions of pair 19; 5S rDNA probe labeled the pericentromeric region of pair 5 |
| Reference |
Piscor D,Alves AL, Parise-Maltempi PP (2015).Chromosomal Microstructure Diversity in Three Astyanax (Characiformes, Characidae) Species: Comparative Analysis of the Chromosomal Locations of the 18S and 5S rDNAs.Zebrafish, 12(1):81-90. |
| Record 2 |
| Geographical area of study |
Parana-panema River, Salto Grande, Sao Paulo, Brazil. |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
50 |
| Karyotype formula |
10M+22SM+6ST+12A |
| Fundamental arm number |
82 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
C-banding showed distinct heterochromatin blocks on long arm of chr. 2, 7-13, 15, 18-20, 23 &24. |
| 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 3 |
| Geographical area of study |
Upper Paran River system, SP, Brazil |
| Source of chromosomes |
Kidney and gills |
| Number of specimens with sex |
1 male and 1 female |
| Diploid chromosome number |
50 |
| Karyotype formula |
32m/sm+18st/a |
| Fundamental arm number |
82 |
| Chromosome length |
|
| Sex chromosome |
|
| Chromosome staining/banding/FISH |
Ag NORs location: distal end of the short arm of 2 A, long arm of 1 SM in 10% of the metaphases; 5S probe hybridization: pericentromeric region of 2 M; 28S probe hybridization: distal end of the short arm of 2 A, co-localized with the 5S in the pericentromeric region of 2 M. |
| 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 |
Feijão and Pântano stream, São Carlos, São Paulo state, Brazil |
| Source of chromosomes |
Anterior kidney |
| Number of specimens with sex |
17 (10 males and 7 females) |
| Diploid chromosome number |
50 |
| Karyotype formula |
6m+30sm+8st+6a (Feijão stream); 6m+28sm+4st+12a (Pântano stream) |
| Fundamental arm number |
94/ 88 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
C-bands were located on centromeric or pericentromeric regions of all chromosomes. Ag-NORs were located terminally on the short arm of a submetacentric chromosome pair (Feijão stream) and on up to three chromosomes (Pântano stream). The 18S rDNA sites were located on four chromosomes (Feijão stream) and in the terminal region of short arm of one subtelocentric pair (Pântano stream). 5S rDNA sites were located on a pair of submetacentric chromosomes |
| Reference |
Neto MF, de Oliveira C, Foresti F, Nogaroto V, de Almeida MC, Artoni RF, Vicari MR, Moreira-Filho O, (2010). Comparative cytogenetic study among three fish species: an analysis from a water divide region. Publication UEPG Ciencias Biologicas E Da Saúde, 16 (1): 19-28. |
| Record 5 |
| Geographical area of study |
Pindorama and Lopei streams (upper Paraná river basin), Brazil. |
| Source of chromosomes |
Anterior kidney cells. |
| Number of specimens with sex |
24 (15 male, 9 female) |
| Diploid chromosome number |
50 |
| Karyotype formula |
6m+30sm+4st+10a |
| Fundamental arm number |
- |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Multiple AgNORs found with inter-individual variation in both stocks terminally located in long arm of pair 6, short arm in one of chromosome pair 14 and pair 19 in Pindorama stock; terminally located on long arm in one of chromosome pair 6, and short arm in one of chromosome pair 14 and 19 in Lopei stock. C-band showed pericentrometric bands & associated with AgNORs in both stocks, found in pairs 5, 7, 9, 10, 16, 19, 24 in Pindorama stock, but in pairs 4, 5, 8, 10, 16, 19, 21, 22, 25 in Lopei. |
| 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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