General information |
Gymnotus sylvius Albert & Fernandes-Matioli, 19 |
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Synonyms |
- |
IUCN Red List status (2014) |
Not Reported |
Habitat |
Freshwater |
Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Gymnotiformes; Gymnotoidei; Gymnotidae. |
Geographical distribution |
Brazil |
Occurrence |
native: Brazil |
Importance |
Food |
Karyological information |
Geographical area of study |
Agua da Madalena - Botucatu-Sao Paulo River; Araqua – Botucatu-Sao Paulo River; Campo Novo- Bauru-Sao Paulo River; Mogi-Guacu - Pirassununga-Sao Paulo River, Brazil |
Source of chromosomes |
Not reported |
Number of specimens with sex |
39 |
Diploid chromosome number |
40 |
Karyotype formula |
22m+12sm+6st |
Fundamental arm number |
Not reported |
Chromosome length |
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Sex chromosome |
Not reported |
Chromosome staining/banding/FISH |
The C-banding technique revealed centromeric marks in all chromosomes. NORs were localised on pair 2 as revealed by silver staining and hybridization with 18S rDNA probes. The 5S rDNA probes revealed signals on one pair. |
Reference |
Scacchetti PC, Pansonato-Alves JC, Utsunomia R, Oliveira C, Foresti F (2011). Karyotypic diversity in four species of the genus Gymnotus Linnaeus, 1758 (Teleostei, Gymnotiformes, Gymnotidae): physical mapping of ribosomal genes and telomeric sequences. Comparative Cytogenetics, 5(3): 223–235. |
Cross Link |