| General information |
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Bryconamericus cf. ecai (da Silva, 2004) |
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| Synonyms |
- |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
- |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characidae. |
| Geographical distribution |
- |
| Occurrence |
- |
| Remarks |
18S rDNA confirmed localization of NORs and evidenced extra cistrons in terminal region of short arm of acrocentric chromosomes pair 25, in both cases syntenic to 5S rDNA cistrons. |
| Karyological information |
| Geographical area of study |
Biguá Stream, Upper Uruguay River basin (State of Santa Catarina), Brazil. |
| Source of chromosomes |
Kidney. |
| Number of specimens with sex |
6 (1 male, 5 female) |
| Diploid chromosome number |
52 |
| Karyotype formula |
10m+16sm+14st+12a |
| Fundamental arm number |
92 |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Single NORs located in terminal region of subtelocentric chromosomes pair 16. C-bands present in pericentromeric region of most chromosomes, interstitial in long arm of submetacentric chromosome pair 10 and terminal regions in metacentric chromosomes pairs 1 and 2 (both arms), submetacentric pair 10, subtelocentric pairs 14, 15 and 16, and acrocentric pairs 21, 24 and 26 (only in long arm for all). |
| Reference |
Prestes AB, Nardelli A, Paiz LM, Gavazzoni M, Margarido VP. (2019). Cytogenetic markers as tools in delimiting species of the highly diverse Neotropical fish Bryconamericus (Characiformes: Characidae). Neotropical Ichthyology, 17(3): e190057. |
| Cross Link |