| General information |
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Psectrogaster amazonica Eigenmann & Eigenmann, 1889 |
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| Common name | Cascudinha |
| Valid name |
Psectrogaster amazonica Eigenmann & Eigenmann, 1889 |
| Synonyms |
- |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characoidei; Curimatidae. |
| Geographical distribution |
Brazil; Peru; Ecuador |
| Occurrence |
native: Brazil; native: Peru; native: Ecuador |
| Remarks |
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| Karyological information |
| Geographical area of study |
Tocantins–Araguaia River, Brazil |
| Source of chromosomes |
Kidney cell or short term cell culture |
| Number of specimens with sex |
7 females; 9 males |
| Diploid chromosome number |
54 |
| Karyotype formula |
44M + 10SM |
| Fundamental arm number |
108 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
NORs were present on one chromosome pair. C-banding analyses showed conspicuous heterochromatic blocks in all chromosomes with a predominance of large pericentromeric C-bands. |
| Reference |
Venere PC, Souza IL, Silva LKS, Dos Anjos MB, De Oliveira RR, Galetti Jr PM (2008). Recent chromosome diversification in the evolutionary radiation of the freshwater fish family Curimatidae (Characiformes). Journal of Fish Biology (2008) 72, 1976–1989. |
| Cross Link |