General information |
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| Hypostomus nigromaculatus (Schubart, 1964) | ||
| Synonyms |
- |
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| IUCN Red List status (2014) | Not Reported |
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| Habitat | Freshwater |
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| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Loricariidae. |
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| Geographical distribution | Brazil |
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| Occurrence | Native: Brazil |
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| Importance | ||
| Remarks | - |
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Karyological information |
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| Geographical area of study | Mogi-Guacu River, Pirassununga, Sao Paulo, Brazil. | |
| Source of chromosomes | Anterior kidney cells. |
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| Number of specimens with sex | 4 (3 male, 1 female) |
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| Diploid chromosome number | 76 |
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| Karyotype formula | 8m+28sm+20st+20a |
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| Fundamental arm number | 112 |
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| Chromosome length | - |
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| Sex chromosome | Heteromorphic sex chromosomes not identified. |
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| Chromosome staining/banding/FISH | Ag-NOR site present in terminal position on short arm of the subtelocentric chromosome pair 23 and long arm of the acrocentric chromosome pair 29. Large blocks of heterochromatin found in terminal position of long arm of the acrocentric chromosome pair 29 and in one homolog of pair 30, and in short arm of pair 23. |
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| 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 |
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