| General information |
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Pterygoplichthys pardalis (Castelnau 1855) |
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| 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 |
- |
| 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 |
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.
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| Cross Link |