General information |
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| Oligosarcus paranensis (Menezes & Géry, 1983) | ||
| Common name | Tambicu | |
| Synonyms |
- |
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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; Characiformes; Characidae. |
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| Geographical distribution | Brazil; Argentina |
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| Occurrence | Native: Brazil, Argentina |
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| Importance | ||
| Remarks | ||
Karyological information |
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| Geographical area of study | Tunas river, belonging to Piquiri river basin (Nova Laranjeiras, PR), Brasil | |
| Source of chromosomes | Kidney |
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| Number of specimens with sex | 33 (12 males, 21 females) |
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| Diploid chromosome number | 50 |
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| Karyotype formula | 4m+10sm+16st+20a |
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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 | Multiple AgNORs identified, involving one acrocentric chromosomal pair (17th) bearing terminal NORs on short arms, observed in all metaphases, plus 2-4 non-homologous NOR-bearing chromosomes. Showed a large amount of heterochromatin, with conspicuous blocks located terminally on the long arms of acrocentric chromosomes from the pairs 16, 17, 18, 19, 20, 21, and 22. |
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| Reference(s) |
Rubert M, Margarido VP (2007). Cytogenetic studies in three species of the genus Oligosarcus. Brazilian Archives of Biology and Technology, 50(1): 127-135.
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