| General information |
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Semaprochilodus taeniurus (Valenciennes, 1821) (Valenciennes, 1821) |
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| Common name | Silver prochilodus |
| Valid name |
Semaprochilodus taeniurus (Valenciennes, 1821) |
| Synonyms |
- |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
- |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characoidei; Prochilodontidae. |
| Geographical distribution |
- |
| Occurrence |
- |
| Importance |
Commercial; aquarium |
| Remarks |
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| Karyological information |
| Geographical area of study |
Confluence of the Negro/Solimo˜es Rivers (State of Amazonas, Brazil) and the Amazonas/ Tapajo´s Rivers (State of Para, Brazil). |
| Source of chromosomes |
Not reported |
| Number of specimens with sex |
12 (7 females and 5 males) |
| Diploid chromosome number |
54 |
| Karyotype formula |
40m + 14sm |
| Fundamental arm number |
Not reported |
| Chromosome length |
Not reported |
| Sex chromosome |
ZZ/ZW sex chromosomes |
| Chromosome staining/banding/FISH |
Constitutive heterochromatin was detected in the centromere region of most of the chromosomes. Heterochromatin was observed in the centromeric region of the Z sex chromosome. The W chromosome had a large heterochromatic block that extended along both chromosome arms. The NOR was detected by silver staining (Ag-NOR) and the FISH technique (using the 18S rDNA probe) on the short arm of the fourth metacentric pair. The 5S rDNA sites were located in the terminal regions on the short arms of eight ch |
| Reference |
Terencio ML, Schneider CH, Gross MC, Vicari MR, Feldberg E (2012). Stable karyotypes: a general rule for the fish of the family Prochilodontidae? Hydrobiologia, 686: 147–156. |
| Cross Link |