General information |
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| Gymnotus carapo Linnaeus, 1758 | ||
| Common name | Banded knifefish | |
| Synonyms |
Gymnotus fasciatus Pallas, 1769 Gymnotum fasciatum Pallas, 1769 Gymnotus albus Pallas, 1769 Gymnotum album Pallas, 1769 Gymnotus brachiurus Bloch, 1786 Gymnotus putaol Lacepede, 1800 Carapus macrourus Cuvier, 1870 Sternopygus carapus Gunther, 1870 |
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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; Gymnotiformes; Gymnotoidei; Gymnotidae. |
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| Geographical distribution | Mexico; Brazil; Argentina; Peru; Venezuela; Ecuador; Uruguay; Suriname; French Guiana; Guatemala; Trinidad and Tobago |
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| Occurrence | Native: Mexico, Brazil, Argentina, Peru, Venezuela, Ecuador, Uruguay, Suriname, French Guiana, Guatemala, Trinidad and Tobago |
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| Importance | Food/Ornamental |
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| Remarks | Nil |
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Karyological information |
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| Geographical area of study | Miranda - Pantanal-MS River, Brazil | |
| Source of chromosomes | Not reported |
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| Number of specimens with sex | 05 |
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| Diploid chromosome number | 54 |
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| Karyotype formula | 38m+12sm+4st |
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| Fundamental arm number | Not reported |
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| Chromosome length | Not reported |
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| Sex chromosome | Not reported |
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| Chromosome staining/banding/FISH | The C-banding technique revealed centromeric marks in all chromosomes. NORs were localised on first chromosome pair, as revealed by silver staining and hybridization with 18S rDNA probes. The 5S rDNA probes revealed signals on fifteen pairs. |
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| Reference(s) |
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. |
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