| General information |
|
Brycon amazonicus (Spix & Agassiz, 1829) |
|
| |
|
| Common name | Jatuarana |
| Synonyms |
Chalceus amazonicus Spix & Agassiz, 1829 Chalceus carpophaga Valenciennes, 1850 Brycon carpophagus (Valenciennes, 1850) Brycon longiceps Steindachner, 1879 Brycon siebenthalae Eigenmann, 1912 Brycon pellegrini Holly, 1929 |
| IUCN Red List status (2014) |
Least Concern (LC) |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characoidei; Bryconinae; Bryconidae. |
| Geographical distribution |
Brazil; Colombia; Venezuela; Guyana; Trinidad and Tobago |
| Occurrence |
native: Brazil; native: Colombia; native: Venezuela; native: Guyana; misidentification: Trinidad and Tobago |
| Importance |
Food |
| Karyological information |
| Record 1 |
| Geographical area of study |
Laguna de Castilleros, Caicara del Orinoco, Estado Bolivar, Venezuela |
| Source of chromosomes |
Not reported |
| Number of specimens with sex |
10 (05 males; 05 females) |
| Diploid chromosome number |
50 |
| Karyotype formula |
22m+14sm+14st |
| Fundamental arm number |
100 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
C-banding revealed heterochromatin distribution in only seven chromosome pairs; AgNO3 staining revealed signals in the terminal region of long arms of the second pair of subtelocentric chromosomes;FISH with 18S rDNA probes confirmed fluorescent signals located in the terminal region of the long arms of pair 13 |
| Reference |
Mariguela TC, Nirchio M, Ron E, Gaviria JI, Foresti F, Oliveira C (2010).Cytogenetic characterization of Brycon amazonicus (Spixet Agassiz, 1829) (Teleostei: Characidae) from Caicara del Orinoco, Venezuela.Comparative Cytogenetics, 4(2):185-193. |
| Record 2 |
| Geographical area of study |
Venezuela. |
| Source of chromosomes |
Kidney tissue. |
| Number of specimens with sex |
|
| Diploid chromosome number |
50 |
| Karyotype formula |
22m+14sm+14st |
| Fundamental arm number |
100 |
| Chromosome length |
|
| Sex chromosome |
|
| Chromosome staining/banding/FISH |
|
| Reference |
Nirchio M, Rossi AR, Foresti F, Oliveira C (2014). Chromosome evolution in fishes: a new challenging proposal from Neotropical species. Neotropical Ichthyology, 12(4): 761-770. |
| Cross Link |