| General information |
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Steindachnerina insculpta (Fernandez-Yepez, 1948) |
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| Common name | Fernete |
| Synonyms |
Cruxentina insculpta Fernandez-Yepez, 1948 |
| 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 |
| Occurrence |
native: Brazil |
| Importance |
Food |
| Karyological information |
| Record 1 |
| Geographical area of study |
Tres Bocas stream, Taquari stream, Tibagi, Agua da Florestra, Parana State, Brazil |
| Source of chromosomes |
Not reported |
| Number of specimens with sex |
23 ( 11 males; 11 females; 1 unknown) |
| Diploid chromosome number |
54 |
| Karyotype formula |
54m-sm |
| Fundamental arm number |
Not reported |
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
AgNORs on terminal position of single chromosome pair (pair # 7) a metacentric. Identical location by CMA3 and FISH with 18S rDNA probe, as in AgNOR. |
| Reference |
Rodrigo T, Gravena W, Carvalho K, Giuliano-Caetano L, Dias AL (2008). Karyotypic analysis in two species of fishes of the family Curimatidae: AgNO3, CM3 and FISH with 18S probe. Caryologia, 61(3): 211-215. |
| Record 2 |
| Geographical area of study |
Paranapanema and Tietê Rivers, São Paulo State, Brazil. |
| Source of chromosomes |
Kidney cell |
| Number of specimens with sex |
23 (10 male, 13 female) |
| Diploid chromosome number |
54 |
| Karyotype formula |
54m/sm |
| Fundamental arm number |
- |
| Chromosome length |
- |
| Sex chromosome |
No chromosome differences among male and female species. |
| Chromosome staining/banding/FISH |
Ag-NORs, CMA3 and 18S rDNA signals localized at terminal region of long arm of large metacentric chromosome pair 7. Heterochromatin blocks seen on several centromeric and a few telomeric regions. Conspicuous heterochromatic blocks visualized on long arm of chromosome pair 7. |
| Reference |
De Rosa, LVS, Foresti F, Martins C, Oliveira C, Sobrinho PE, Wasko AP (2007). Cytogenetic analyses of two Curimatidae species (Pisces; Characiformes) from the Paranapanema and Tietê Rivers. Braz. J. Biol., 67(2): 333-338. |
| Record 3 |
| Geographical area of study |
Tocantins–Araguaia River, Brazil |
| Source of chromosomes |
Kidney cell or short term cell culture |
| Number of specimens with sex |
3 females; 3 males |
| Diploid chromosome number |
54 |
| Karyotype formula |
50M + 4SM |
| 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 |