| General information |
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Gymnotus mamiraua Albert & Crampton, 2001 |
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| Valid name |
Gymnotus mamiraua Albert & Crampton, 2001 |
| 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; Peru |
| Occurrence |
native: Brazil; questionable: Peru |
| Remarks |
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| Karyological information |
| Geographical area of study |
Floodplain channels and lakes in the Mamiraua´ Sustainable Development Reserve (Mamiraua´ Reserve), Amazonas, Brazil |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
12 (10 males and 2 females) |
| Diploid chromosome number |
54 |
| Karyotype formula |
42 m/sm+12st/a |
| Fundamental arm number |
Not reported |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
The constitutive heterochromatin occurred in the pericentromeric regions of the majority of the chromosome pairs. The Ag-NORs and 18S rDNA sites were located on the short arms of pair 24. |
| Reference |
Milhomem SSR, Crampton WGR, Pieczarka JC, Silva DDS, Cardoso AL, da Silva PC, de Oliveira JA, Nagamachi CY (2012). Chromosomal and electric signal diversity in three sympatric electric knifefish species (Gymnotus, Gymnotidae) from the Central Amazon Floodplain. Reviews in Fish Biology and Fisheries, 22:485–497 |
| Cross Link |