General information |
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| Characidium gomesi Travassos, 1956 | ||
| Common name | Canivete | |
| 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; Characiformes; Characoidei; Crenuchidae. |
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| Geographical distribution | Brazil |
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| Occurrence | Native: Brazil |
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| Importance | Food |
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| Remarks | Nil |
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Karyological information |
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| Geographical area of study | Machado River, near Sao Joao da Mata town, Minas Gerais State, Brazil. | |
| Source of chromosomes | Gill and kidney tissues. |
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| Number of specimens with sex | 20 (6 male, 14 female). |
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| Diploid chromosome number | 50 |
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| Karyotype formula | 32m+18sm |
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| Fundamental arm number | 100 |
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| Chromosome length | - |
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| Sex chromosome | No chromosome differences observed between sexes. |
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| Chromosome staining/banding/FISH | Small heterochromatin blocks distributed at centromeres and telomeres of few chromosomes, including telomeric region of long arm of chromosome pair 17. Terminal AgNORs observed on long arm of submetacentric chromosomes pair 17. Chromomycin A3 signals observed at AgNOR sites. |
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| Reference(s) |
da Silva AR, M EL (2006). Cytogenetic divergence between two sympatric species of Characidium (Teleostei, Characiformes, Crenuchidae) from the Machado River, Minas Gerais, Brazil. Genetics and Molecular Biology, 29(3): 459-463. |
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