| General information |
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Heptapterus mustelinus (Valenciennes, 1835) |
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| Common name | Bagre |
| Synonyms |
- |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Heptapteridae. |
| Geographical distribution |
Brazil; Argentina; Uruguay; Suriname |
| Occurrence |
native: Brazil; native: Argentina; native: Uruguay; native: Suriname |
| Remarks |
- |
| Karyological information |
| Geographical area of study |
Pindorama stream, tributary of Sao Francisco Verdadeiro River, upper Parana River basin, Parana, Brazil. |
| Source of chromosomes |
Anterior portion of kidney. |
| Number of specimens with sex |
8 (4 male, 4 female) |
| Diploid chromosome number |
54 |
| Karyotype formula |
26m+18 sm+4st+6a |
| Fundamental arm number |
102 |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Multiple NORs observed on p arm (terminal position) of acrocentric pair 25, sporadically on q arm of metacentric pair 1, p arm of metacentric pair 2, q arm of submetacentric pair 18. C-bands present in centromeric region of most chromosome complement and associated with NORs. Double staining with CMA3 and DAPI demonstrated GC-rich centromeric heterochromatin of pairs 1, 3, 4, 6, 10, 14, 17, 23 and 27, besides the one that coincides with the Ag-NORs. C-band and NORs regions were negative DAPI. |
| Reference |
Yano CF, Margarido VP (2012). First cytogenetic studies of the genus Heptapterus (Actinopterygii, Siluriformes): karyotype differentiation and review of cytogenetic data on the Heptapteridae family. Journal of Fish Biology, 81: 939–953. |
| Cross Link |