| General information |
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Bryconamericus cf. eigenmanni (Evermann, Kendall, 1906) |
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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 the localization of the NORs and showed two extra cistons in the short arm of one acrocentric chromosomes of the pairs 20 and 26. 5S rDNA showed 5 cistrons of this gene, four of them syntenic to 18S rDNA genes, and the other located on short arm of first acrocentric pair 26. |
| 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 |
1 (1 male) |
| Diploid chromosome number |
52 |
| Karyotype formula |
6m+16sm+16st+14a |
| Fundamental arm number |
90 |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Simple NORs located in terminal region of acrocentric chromosomes 25 pair. C-bands present in pericentromeric region of most chromosomes, interstitial in long arm of the submetacentric chromosome pair 8 and acrocentric chromosome pair 26, and terminal on the short arm of submetacentric pairs 4, 9 and 10 and subtelocentric pair 19, and in the long arm of submetacentric pairs 4, 5, 6, 7, 8 and 11, subtelocentric pair 16, and acrocentric pairs 20, 21, 23 and 26. |
| 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 |