| General information |
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Fluviphylax simplex Costa, 1996 |
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| Common name | Barrigudinho |
| Synonyms |
Squalus acanthias ponticus Myagkov & Kondyurin, 1986 |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Euteleostei; Neoteleostei; Acanthomorpha; Acanthopterygii; Percomorpha; Atherinomorpha; Cyprinodontiformes; Poeciliidae. |
| Geographical distribution |
Brazil |
| Occurrence |
native: Brazil |
| Importance |
Food |
| Karyological information |
| Geographical area of study |
Lua Beach; Confluence of the Negro and Solimoes Rivers, Amazonas, Brazil |
| Source of chromosomes |
Maceration of individuals |
| Number of specimens with sex |
24(06 males; 08 females;10 indeterminated) |
| Diploid chromosome number |
48 |
| Karyotype formula |
4m+16sm+18st+10a |
| Fundamental arm number |
Not reported |
| Chromosome length |
1.46 and 3.28 |
| Sex chromosome |
No sex chromosome deffierentiation |
| Chromosome staining/banding/FISH |
Constitutive heterochromatin detected in pericentromeric region in majority of the chromosomes. The heterochromatin blocks were less evident and in the 20th pair were found additional interstitial marks on the long arms. |
| Reference |
Souza ER, Ribeiro LB, Feldberg E, Farias IP, Hrbek T, Gross MC (2011) Comparative cytogenetics of two of the smallest Amazonian fishes: Fluviphylax simplex Costa, 1996 and Fluviphylax zonatus Costa, 1996 (Cyprinodontiformes, Poeciliidae). Comparative Cytogenetics 5(5): 411-422. |
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