General information |
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| Lebiasina bimaculata (Valenciennes, 1847) | ||
| Common name | Twospot lebiasina, Las Penitas | |
| Synonyms |
- |
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| IUCN Red List status (2014) | Not Reported |
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| Habitat | Freshwater |
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| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characoidei; Lebiasinidae. |
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| Geographical distribution | Peru; Ecuador |
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| Occurrence | Native: Peru, Ecuador |
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| Importance | ||
| Remarks | - |
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Karyological information |
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| Geographical area of study | Arenillas river lakes, El Oro, Ecuador. | |
| Source of chromosomes | Anterior kidney. |
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| Number of specimens with sex | 7 (4 male, 3 female). |
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| Diploid chromosome number | 36 |
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| Karyotype formula | 36 m/sm |
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| Fundamental arm number | 72 |
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| Chromosome length | - |
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| Sex chromosome | - |
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| 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. |
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| Reference(s) |
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. |
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