General information |
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| Characidium pterostictum (Gomes, 1947) | ||
| 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; Characoidei; Crenuchidae. |
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| Geographical distribution | Brazil; Argentina |
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| Occurrence | Native: Brazil, Argentina |
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| Importance | ||
| Remarks | Caintains mitotically unstable B chromosomes. |
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Karyological information |
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| Geographical area of study | Betari River, Brazil. | |
| Source of chromosomes | Renal tissue and gills. |
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| Number of specimens with sex | - |
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| Diploid chromosome number | 50 |
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| Karyotype formula | 32m+16sm+2a |
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| Fundamental arm number | - |
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| Chromosome length | - |
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| Sex chromosome | Showed ZZ/ZW sex chromosome system. |
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| Chromosome staining/banding/FISH | W and B chromosomes contained completely darkly C-banded. Additional distal C-band observed. Autosomes showed pericentromeric C-bands. Distal C-bands observed on short arm of submetacentric pair no. 22 and long arm of acrocentric pair no. 25. |
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| Reference(s) |
Pansonato-Alves JC, Serrano E´A, Utsunomia R, Camacho JPM, Costa Silva GJd, et al. (2014). Single origin of sex chromosomes and multiple origins of B chromosomes in fish genus Characidium. PLoS ONE 9(9): e107169. doi:10.1371/journal.pone.0107169. |
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