| General information |
|
Astyanax schubarti Britski, 1964 |
|
| |
|
| Common name | Lambari de rabo amarelo |
| Synonyms |
- |
| 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 |
| Remarks |
|
| 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 |
36 |
| Karyotype formula |
12M+16SM+4ST+4A |
| Fundamental arm number |
64 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
C-banding showed few darkly stained heterochromatic blocks in the pericentromeric region of chr. 2, 3, 8 & 9. |
| 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 |
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 |
36 |
| Karyotype formula |
28m/sm+ 8st/a |
| Fundamental arm number |
64 |
| Chromosome length |
|
| Sex chromosome |
|
| Chromosome staining/banding/FISH |
Ag NORs location: distal portion of the short arm of 2 A; 5S probe hybridization: pericentromeric region of 4 M; 28S probe hybridization: short arm of 2 A; co-localize with the 5S in 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.
|
| Cross Link |