General information |
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| Characidium gomesi Travassos, 1956 | ||
| Common name | Canivete | |
| 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 |
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| Occurrence | Native: Brazil |
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| Importance | Food |
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| Remarks | Nil |
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Karyological information |
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| Geographical area of study | Paiol Grande stream, Sao Bento of Sapucai, Brazil | |
| Source of chromosomes | Not reported |
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| Number of specimens with sex | 27 (11 males; 16 females) |
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| Diploid chromosome number | 50 |
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| Karyotype formula | 31m+19sm (Females); 32+18sm (Males) |
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| Fundamental arm number | 100 |
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| Chromosome length | Not reported |
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| Sex chromosome | Female karyotype shows a chromosome heteromorphism |
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| Chromosome staining/banding/FISH | NORs are located in the single homologous pair no.18; natural triploidy (2n=3x=75) was also verified in a female specimen showing two Z and one W chromosomes |
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| Reference(s) |
Centofante L, Bertollo LAC, Filho OM (2001). Comparative cytogenetics among sympatric species of Characidium (Pisces, Characiformes). Diversity analysis with the description of a ZW sex chromosome system and natural triploidy.Caryologia,54(3): 253-260. |
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