| General information |
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Genidens genidens (Cuvier, 1829) |
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| Common name | Guri sea catfish, Bagre urutu |
| Synonyms |
Pimelodus genidens Cuvier, 1829 Bagrus genidens (Cuvier, 1829) Genidens cuvieri Castelnau, 1855 Genidens granulosus Castelnau, 1855 Genidens valenciennesii Bleeker, 1858 |
| IUCN Red List status (2014) |
Least Concern (LC) |
| Habitat |
Saltwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Ariidae |
| Geographical distribution |
Brazil; Argentina; Uruguay |
| Occurrence |
native: Brazil; native: Argentina; native: Uruguay |
| Importance |
Food |
| Karyological information |
| Record 1 |
| Geographical area of study |
Antonina bay and Pontal do Parana, Parana, Brazil |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
21 (11 male; 10 female) |
| Diploid chromosome number |
56 |
| Karyotype formula |
14m+22sm16st+4a |
| Fundamental arm number |
|
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
C- banding, Presence of single labels of NOR in the terminal region of the short arms of chromosome pair 13, CMA3 staining |
| Reference |
Sczepanski TS, Noleto RB, Cestari MM, Artoni RF (2010). A comparative study of two marine catfish (Siluriformes, Ariidae): Cytogenetic tools for determining cytotaxonomy and karyotype evolution. Micron, 41: 193-197. |
| Record 2 |
| Geographical area of study |
Atlantic shore, coast of states of Bahia and Rio de Janeiro, Brazil. |
| Source of chromosomes |
Kidney, gills and/or spleen |
| Number of specimens with sex |
2 |
| Diploid chromosome number |
54 |
| Karyotype formula |
- |
| Fundamental arm number |
- |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
- |
| Reference |
Netto MR de Ca´scia B, Pauls E, Roberto P, Affonso PRA de Mello (2007). A standard protocol for obtaining fish chromosomes under post-mortem conditions. Micron, 38: 214–217. |
| Record 3 |
| Geographical area of study |
Estuarine region, Cananéia Coast, São Paulo, Brazil |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
12 (4 male, 8 female) |
| Diploid chromosome number |
56 |
| Karyotype formula |
12m+20sm+20st+4t |
| Fundamental arm number |
88 |
| Chromosome length |
Length ranged 5.18 to 1.77 µm. |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
- |
| Reference |
Gomes V, Phan VN, Passos MJAC (1994). Karyotypes of three species of marine catfishes from Brazil. Bolm Inst Oceanogr USP 42: 55-61. |
| Cross Link |