General information |
Astyanax eigenmanniorum (Cope, 1894) |
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Common name | Lambari |
Synonyms |
Tetragonopterus eigenmanniorum Cope, 1894 |
IUCN Red List status (2014) |
Not Reported |
Habitat |
Freshwater |
Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characidae. |
Geographical distribution |
Brazil; Argentina; Uruguay |
Occurrence |
native: Brazil; native: Argentina; native: Uruguay |
Importance |
Food |
Karyological information |
Record 1 |
Geographical area of study |
Saco da Alemoa, Eldorado do Sul/Hydrographic system from Laguna dos Patos, Brazil |
Source of chromosomes |
Air drying technique and lymphocyte culture |
Number of specimens with sex |
11 ( 02 males; 09 females) |
Diploid chromosome number |
48 |
Karyotype formula |
10m+16sm+10st+12a |
Fundamental arm number |
84 |
Chromosome length |
Not reported |
Sex chromosome |
Not detected |
Chromosome staining/banding/FISH |
C-banding pericentromeric; Ag-NORs on short arms of 3 chromosome pairs; FISH showed variation of ribosomal sites. |
Reference |
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. |
Record 2 |
Geographical area of study |
Aquariophiles, Brazil |
Source of chromosomes |
Not reported |
Number of specimens with sex |
03 ( 01 male;02 females) |
Diploid chromosome number |
50 |
Karyotype formula |
8m+22sm +12st +8a |
Fundamental arm number |
92 |
Chromosome length |
Not reported |
Sex chromosome |
Not reported |
Chromosome staining/banding/FISH |
Ag-NORs in the terminal regions of the short arms of pair 24 and on the long arm of one homolog of pair 6; GC-rich regions were detected in six chromosomes ;18S rDNA sites occurred on the short arms of pairs 1, 14, and 24, and on the long arms of pairs 5 and 6, always in the terminal region ; 5S rDNA sites were located near the centromeres of pairs 2 and 22 |
Reference |
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. |
Cross Link |