General information |
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| Pseudotocinclus tietensis (Ihering, 1907) | ||
| Common name | Cascudinho | |
| Synonyms |
- |
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| IUCN Red List status (2014) | Vulnerable (VU) |
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| Habitat | Freshwater |
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| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Loricariidae. |
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| Geographical distribution | Brazil |
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| Occurrence | Endemic: Brazil |
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| Importance | ||
| Remarks | ||
Karyological information |
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| Geographical area of study | Tiete River at Paranapiacaba, Sao Paulo, Brazil | |
| Source of chromosomes | Kidney and gills |
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| Number of specimens with sex | 9 males and 4 females |
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| Diploid chromosome number | 54 |
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| Karyotype formula | 26m+20sm+6st ( plus 1m/sm in male and 1sm/sm in female) |
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| Fundamental arm number | ||
| Chromosome length | ||
| Sex chromosome | XX/XY |
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| Chromosome staining/banding/FISH | AgNORs was located interstitially on the long arm of largest metacentric pair. |
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| Reference(s) |
Andreata AA, de Almeida-Toledo LF, Oliveira C, de Almeida Toledo Filho S (1992). Chromosome studies in Hypoptopomatinae (Pisces, Siluriformes, Loricariidae): I. XX/XY sex chromosome heteromorphism in Pseudotocinclus tietensis. Cytologia, 57: 369-372.
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