| General information |
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Hypostomus nigromaculatus (Schubart, 1964) |
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| Synonyms |
- |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Loricariidae. |
| Geographical distribution |
Brazil |
| Occurrence |
native: Brazil |
| Remarks |
- |
| Karyological information |
| Geographical area of study |
Lapa Stream, Ipeúna city, São Paulo, Brazil. |
| Source of chromosomes |
Anterior kidney. |
| Number of specimens with sex |
26 (13 female, 13 male) |
| Diploid chromosome number |
76 |
| Karyotype formula |
12m+22sm+30st+12a |
| Fundamental arm number |
140 |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Ag-NOR present on terminal position of long arm of acrocentric pair 33. C-bands located in terminal and centromeric portions of few chromosome pairs, there was overlapping between heteroÂchromatic sites and NORs. 18S rDNA FISH signals also present on acrocentric pair 33. 5S rDNA present on pair 2, with an interstitial marking on short arm. |
| Reference |
Traldi JB, Blanco DR, Vicari MR, Martinez JF, Lui RL, Barros AV, Artoni RF, Moreira-Filho O (2013). Chromosomal diversity in Hypostomus (Siluriformes, Loricariidae) with emphasis on physical mapping of 18S and 5S rDNA sites. Genetics and Molecular Research, 12 (1): 463-471. |
| Cross Link |