| General information |
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Paratrygon aiereba (Muller & Henle, 1841) |
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| Common name | Discus ray, Arraia |
| Synonyms |
Trygon aiereba Muller & Henle, 1841 Raja ajereba Walbaum, 1792 Paratrygon ajereba (Walbaum, 1792) Paratrygon aiereba (Walbaum, 1792) Trygon strogylopterus Jardine, 1843 Disceus thayeri Garman, 1913 |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Chondrichthyes; Elasmobranchii; Batoidea; Myliobatiformes; Potamotrygonidae. |
| Geographical distribution |
Brazil; Peru; Venezuela; Ecuador |
| Occurrence |
native: Brazil; native: Peru; native: Venezuela; native: Ecuador |
| Importance |
Food |
| Karyological information |
| Geographical area of study |
Daraqua, Itu, Ariraha rivers; Zamula stream,middle Negro River, Barcelos, Amazonas, Manaus |
| Source of chromosomes |
Kidney,epigonal organ and spleen |
| Number of specimens with sex |
04 (02 males; 02 females) |
| Diploid chromosome number |
90 |
| Karyotype formula |
4M+2SM+10ST+74A |
| Fundamental arm number |
106 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
Three NOR-bearing sites were detected |
| Reference |
Valentim FC, Falcao JN, Porto JIR, Feldberg E (2006). Chromosomes of three freshwater stingrays (Rajiformes Potamotrygonidae) from the Rio Negro basin, Amazon, Brazil. Genetica,128:33-39. |
| Cross Link |