| General information |
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Lebiasina bimaculata (Valenciennes, 1847) |
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| Common name | Twospot lebiasina, Las Penitas |
| Synonyms |
- |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characoidei; Lebiasinidae. |
| Geographical distribution |
Peru; Ecuador |
| Occurrence |
native: Peru; native: Ecuador |
| Remarks |
- |
| Karyological information |
| Geographical area of study |
Arenillas river lakes, El Oro, Ecuador. |
| Source of chromosomes |
Anterior kidney. |
| Number of specimens with sex |
7 (4 male, 3 female). |
| Diploid chromosome number |
36 |
| Karyotype formula |
36 m/sm |
| Fundamental arm number |
72 |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
C-positive heterochromatin located in centromeric and telomeric regions of several chromosomes. Female heteromorphism concerning an enlarged C-positive telomeric constriction observed in homologue chromosome pair 3. Chromosome pair 1 bears interstitial 5S rDNA sequences on long arms. 18S rDNA site present on telomeric region of chromosome pair 3. CMA3 sites found to be exclusively co-located with 18S rDNA sites. |
| Reference |
Sassi F de MC, de Oliveira EA, Bertollo LAC, Nirchio M, Hatanaka T, Marinho MMF, Moreira-Filho O, Aroutiounian R, Liehr T, Al-Rikabi ABH, de Bello Cio M. (2019). Chromosomal evolution and evolutionary relationships of Lebiasina species (Characiformes, Lebiasinidae). Int. J. Mol. Sci., 20: 2944. doi:10.3390/ijms20122944. |
| Cross Link |