Karyotypic characterization of Hydromedusa tectifera (Testudines, Pleurodira) from the upper Iguaçu River in the Brazilian state of Paraná
Genet. mol. biol
; 29(2): 263-266, 2006. ilus
Article
in En
| LILACS
| ID: lil-432695
Responsible library:
BR26.1
RESUMO
We present the karyotypic characterization of 26 specimens of the side-necked turtle Hydromedusa tectifera collected in the upper Iguaçu River, Paraná state, Brazil. The turtles were cytogenetically analyzed using Giemsa staining and other banding techniques (C, G, Ag-NOR and CMA3) as well as fluorescence in situ hybridization (FISH) with a rDNA 18S probe. All the specimens showed a diploid number of 58 composed of 22 macro and 36 microchromosomes. The Ag-NOR, CMA3 and FISH techniques permitted the identification and characterization of the chromosome pairs bearing nucleolus organizer regions (NORs), while G-banding facilitated a better recognition and pairing of macrochromosomes. These data agree with some information available in the literature and should be very useful for further cytotaxonomic and cytosystematic studies.
Full text:
1
Index:
LILACS
Main subject:
Turtles
/
Chromosomes
/
Cytogenetic Analysis
Limits:
Animals
Country/Region as subject:
America do sul
/
Brasil
Language:
En
Journal:
Genet. mol. biol
Journal subject:
GENETICA
Year:
2006
Type:
Article