| General information |
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Parodon tortuosus Eigenmann & Norris, 1900 |
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| Common name | Canivete |
| Valid name |
Parodon nasus Kner, 1859 |
| Synonyms |
Parodon tortuosus Eigenmann & Norris, 1900 Parodon tortuosus tortuosus Eigenmann & Norris, 1900 Parodon gestri Boulenger, 1902 Apareiodon pirassunungae Amaral Campos, 1945 Parodon tortuosus Eigenmann & Norris, 1900 Parodon tortuosus tortuosus Eigenmann & Norris, 1900 Parodon gestri Boulenger, 1902 Apareiodon pirassunungae Amaral Campos, 1945 |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Parodontidae. |
| Geographical distribution |
Brazil; Argentina |
| Occurrence |
native: Brazil; native: Argentina |
| Karyological information |
| Record 1 |
| Geographical area of study |
Passa Cinco river, State of Sao Paulo, Brazil |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
Males-10; females-10 |
| Diploid chromosome number |
54 |
| Karyotype formula |
Not reported |
| Fundamental arm number |
108 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
Not reported |
| Reference |
Moreira FO, Bertollo LAC, Pedro M, Galetti Jr PM (1985). Karyotypic study of some species of family Parodontidae (Pisce—Cypriniformes). Caryologia, 38(1): 47-55. |
| Record 2 |
| Geographical area of study |
Passa-Cinco river (Upper Parana river basin) |
| Source of chromosomes |
Not reported |
| Number of specimens with sex |
Males-8; females- 14 |
| Diploid chromosome number |
54 |
| Karyotype formula |
48M/SM +6ST |
| Fundamental arm number |
Not reported |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
C-bands on pericentrmeric and telomeric region of some chromosmes; NORs were found terminally on 25th pair by silver staining and FISH with 18S rDNA probes |
| Reference |
Bellafronte E, Margarido VP, Moreira-Filho O (2005). Cytotaxonomy of Parodon nasus, and Parodon tortuosus (Pisces, Characiformes). A case of synonymy confirmed by cytogenetic analyses. Genetics and Molecular Biology, 28(4): 710-716. |
| Record 3 |
| Geographical area of study |
Cuiabá River (Paraguay River basin), Brazil. |
| Source of chromosomes |
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| Number of specimens with sex |
22 (8 males and 14 females) |
| Diploid chromosome number |
54 |
| Karyotype formula |
48 M/SM+ 6ST |
| Fundamental arm number |
108 |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
C-banding showed conspicuous pericentromeric bands on chromosome pairs 4, 5, 16 and telomeric blocks on pairs 1, 6, 17, 25, 26 and 27. A single NOR pair observed on the long arms of chromosome pair 25, which was confirmed by FISH with 18S rDNA probe. |
| Reference |
Bellafronte E, Margarido VP, Moreira-Filho O (2005). Cytotaxonomy of Parodon nasus and Parodon tortuosus (Pisces, Characiformes). A case of synonymy confirmed by cytogenetic analyses. Genetics and Molecular Biology, 28 (4): 710-716.
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