General information |
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| Bryconamericus cf. eigenmanni (Evermann, Kendall, 1906) | ||
| Synonyms |
- |
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| IUCN Red List status (2014) | Not Reported |
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| Habitat | - |
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| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characidae. |
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| Geographical distribution | - |
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| Occurrence | - | |
| Importance | ||
| 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. |
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Karyological information |
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| Geographical area of study | Biguá Stream, Upper Uruguay River basin (State of Santa Catarina), Brazil. | |
| Source of chromosomes | Kidney. |
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| Number of specimens with sex | 1 (1 male) |
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| Diploid chromosome number | 52 |
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| Karyotype formula | 6m+16sm+16st+14a |
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| Fundamental arm number | 90 |
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| Chromosome length | - |
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| Sex chromosome | - |
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| 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. |
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| Reference(s) |
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. |
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