General information |
||
| Pterygoplichthys pardalis (Castelnau 1855) | ||
| Common name | Amazon sailfin catfish | |
| Synonyms |
- |
|
| IUCN Red List status (2014) | Not Reported |
|
| Habitat | - |
|
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Loricariidae. |
|
| Geographical distribution | - |
|
| Occurrence | - | |
| Importance | ||
| Remarks | - |
|
Karyological information |
||
| Geographical area of study | Lower Amazon river in municipality of Santarém (Porto dos Milagres, Arapixuna, Lago Grande, Lago Pacoval), Pará State, Brazil. | |
| Source of chromosomes | Cephalic kidney. |
|
| Number of specimens with sex | 17 (6 male, 10 female, 1 unidentified sex). |
|
| Diploid chromosome number | 52 |
|
| Karyotype formula | 20m+20sm+8st+4a |
|
| Fundamental arm number | 100 |
|
| Chromosome length | - |
|
| Sex chromosome | No differentiation of sex chromosomes. |
|
| Chromosome staining/banding/FISH | One pair of Ag-NOR found in distal region of long arm of pair 12, which coincided with 18S rDNA signal. 5S rDNA signal was syntenic to this chromosome but localized in short arm. C-band was restricted in distal regions of 4 chromosome pairs (i.e. pair 4, 12, 25 and 26). Telomeric probes showed distal hybridization signals only. CMA3-DAPI stained signals were present on chromosome pairs 12 (sm) and 26 (a). |
|
| Reference(s) |
dos Santos Guimarães A, Maciel LAM, de Souza MFB, Rodrigues LRR. (2023). Karyotypic and Molecular Analysis of Pterygoplichthys pardalis (Castelnau 1855) from the Lower Amazon River. Animals, 13, 1533.
|
|