| General information |
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Hypostomus regani (Ihering, 1905) |
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| Common name | Cascudo-chita |
| Synonyms |
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| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Loricariidae. |
| Geographical distribution |
Brazil; Argentina; Uruguay |
| Occurrence |
native: Brazil; native: Argentina; native: Uruguay |
| Importance |
Food/ornamental |
| Karyological information |
| Record 1 |
| Geographical area of study |
Mogi-GuaCu river, Pirassununga,Mogi-GuaCu river basin, Brazil |
| Source of chromosomes |
Not reported |
| Number of specimens with sex |
10 (08 male; 02 female) |
| Diploid chromosome number |
72 |
| Karyotype formula |
6m+6sm+32st+28a |
| Fundamental arm number |
Not reported |
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
NORs occurred on the short arms of two subtelocentric chromosomal pairs |
| Reference |
Martinez ERM, Zawadzki CH,Foresti F, Oliveira C (2011). Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae). Genetics and Molecular Biology, 34(4): 562-568. |
| Record 2 |
| Geographical area of study |
Ivai river, municipality of Floresta, Parana State, Brazil |
| Source of chromosomes |
Not reported |
| Number of specimens with sex |
04 (02 males; 02 females) |
| Diploid chromosome number |
72 |
| Karyotype formula |
12m+14sm+26st+20a |
| Fundamental arm number |
Not reported |
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
NORs were present on 2 pairs. |
| Reference |
Artoni RF, Bertollo LAC (1996). Cytogenetic studies on Hypostominae (Pisces, Siluriformes, Loricariidae). Considerations on karyotype evolution in the genus Hypostomus., Caryologia: International Journal of Cytology, Cytosystematics and Cytogenetics, 49:1, 81-90. |
| Record 3 |
| Geographical area of study |
Upper Parana basin, Piracicaba and Mogi Guau rivers, State of Sao Paulo, Brazil |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
11 (07 males; 04 females) |
| Diploid chromosome number |
72 |
| Karyotype formula |
10m+ 20sm + 42st/a |
| Fundamental arm number |
Not reported |
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
AgNOR present on 2 chromosomes at la/t positions. |
| Reference |
Artoni RF, Bertollo LAC (1996). Cytogenetic studies on Hypostominae (Pisces, Siluriformes, Loricariidae). Considerations on karyotype evolution in the genus Hypostomus., Caryologia: International Journal of Cytology, Cytosystematics and Cytogenetics, 49:1, 81-90. |
| Record 4 |
| Geographical area of study |
Ivaà river, Floresta municipality, Paraná State, Brazil. |
| Source of chromosomes |
- |
| Number of specimens with sex |
4 (2 male, 2 female). |
| Diploid chromosome number |
72 |
| Karyotype formula |
12m+14sm+26st+20a |
| Fundamental arm number |
- |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Multiple NORs with stained regions found on short arms of subtelocentric chromosome pairs 12 & 19. |
| Reference |
Endo KS, Martinez ERM, Zawadzki CH, Paiva LRS, Júlio Júnior HF (2012). Karyotype description of possible new species of the Hypostomus ancistroides complex (Teleostei: Loricariidae) and other Hypostominae. Acta Sci Biol Sci, 34(2): 181–189. |
| Record 5 |
| Geographical area of study |
Piquiri River, PR, Brazil. |
| Source of chromosomes |
- |
| Number of specimens with sex |
11 (5 male, 6 female). |
| Diploid chromosome number |
72 |
| Karyotype formula |
12m+8sm+10st+42a |
| Fundamental arm number |
- |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Multiple Ag-NORs located on terminal region of short arm of chromosome pairs 32 and 35. |
| Reference |
Bueno V, Venere PC, Zawadzki CH, Margarido VP (2013). Karyotypic diversification in Hypostomus Lacépede, 1803 (Siluriformes, Loricariidae): biogeographical and phylogenetic perspectives. Rev Fish Biol Fisheries, 23: 103–112.
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| Record 6 |
| Geographical area of study |
Araqua´ river, Botucatu, Sa˜o Paulo, Brazil. |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
8 (5 male, 3 female) |
| Diploid chromosome number |
72 |
| Karyotype formula |
12m+18sm+26st+16a |
| Fundamental arm number |
- |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Two subterminal Ag-NORs on long arm of 35th and 36th acrocentric chromosome pairs. |
| Reference |
Alves AL, Oliveira C, Nirchio M, Granado A, Foresti F (2006). Karyotypic relationships among the tribes of Hypostominae (Siluriformes: Loricariidae) with description of XO sex chromosome system in a Neotropical fish species. Genetica, 128: 1-9. |
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