General information |
Hasemania nana (Lütken, 1875) |
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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 |
Remarks |
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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 |
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.
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Cross Link |