General information |
||
| Hasemania nana (Lütken, 1875) | ||
| Common name | Silvertip tetra, Piaba | |
| 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 |
|
| Importance | ||
| Remarks | ||
Karyological information |
||
| Geographical area of study | Lake at the margins of the Sao Francisco River (Tres Marias, MG, Brazil) | |
| Source of chromosomes | Kidney |
|
| Number of specimens with sex | 17(08 males, 09 females) |
|
| Diploid chromosome number | 50 |
|
| Karyotype formula | 8m+42sm |
|
| Fundamental arm number | 100 |
|
| Chromosome length | Not reported |
|
| Sex chromosome | Not reported |
|
| Chromosome staining/banding/FISH | Constitutive heterochromatin was detected in few chromosomes in pericentromeric region. Ag-NORs were located in a terminal position on short arm of submetacentric pair no. 7, adjacent to a heterochromatic region. |
|
| Reference(s) |
Moreira PWA, Bertollo LAC, Moreira-Filho O (2007). Comparative cytogenetics between three Characidae fish species from the Sao Francisco river basin. Caryologia, 60(1-2): 64-68.
|
|