General information |
||
| Hypostomus nigromaculatus (Schubart, 1964) | ||
| 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 |
|
| Importance | ||
| Remarks | - |
|
Karyological information |
||
| Geographical area of study | Bom Jesus Stream, Igacaba, Sao Paulo, Brazil. | |
| Source of chromosomes | Anterior kidney cells. |
|
| Number of specimens with sex | 9 (4 male, 5 female) |
|
| Diploid chromosome number | 76 |
|
| Karyotype formula | 10m+16sm+14st+36a |
|
| Fundamental arm number | 116 |
|
| Chromosome length | - |
|
| Sex chromosome | Heteromorphic sex chromosomes not identified. |
|
| Chromosome staining/banding/FISH | Ag-NOR site present in terminal position on short arm of the subtelocentric chromosome pair 18 and long arm of the acrocentric chromosome pair 26. Heterochromatin detected in interstitial position of long arm of chromosome pair 14 and in all short arms of chromosome pair 2. |
|
| Reference(s) |
Neto SJS, Balini LC, Zawadzki CH, Fernandes CA. (2025). Cytogenetic characterization in two populations of Hypostomus nigromaculatus (Loricariidae) from upper Paraná river basin. J Ichthyol. https://doi.org/10.1134/S0032945224602550 |
|