General information |
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| Astyanax abramis (Jenyns, 1842) | ||
| Common name | Acará-pixuma | |
| Synonyms |
Tetragonopterus abramis Jenyns, 1842 |
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| IUCN Red List status (2014) | Not Reported |
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| Habitat | Freshwater |
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| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characidae. |
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| Geographical distribution | Brazil; Argentina; Peru; Uruguay |
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| Occurrence | Native: Brazil, Argentina, Peru, Uruguay |
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| Importance | Food |
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| Remarks | Nil |
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Karyological information |
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| Geographical area of study | Bento Gomes river in Mato Grosso state (MT), Brazil | |
| Source of chromosomes | Not reported |
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| Number of specimens with sex | 3 |
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| Diploid chromosome number | 50 |
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| Karyotype formula | 12m+28sm+6st+4a |
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| Fundamental arm number | 96 |
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| Chromosome length | Not reported |
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| Sex chromosome | Not reported |
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| Chromosome staining/banding/FISH | Heterochromatic regions were observed mainly in pericentromeric regions; Ag-NORs, GC-rich regions, and 18S rDNA sites were also observed in the secondary constriction of pair 21;5S rDNA sequences were located in the pericentromeric region on the long arms of pairs 2 and 23 |
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| Reference(s) |
Piscor D,Alves AL, Parise-Maltempi PP (2015).Chromosomal Microstructure Diversity in Three Astyanax (Characiformes, Characidae) Species: Comparative Analysis of the Chromosomal Locations of the 18S and 5S rDNAs.Zebrafish, 12(1):81-90. |
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