PL EN


Preferences help
enabled [disable] Abstract
Number of results
Journal
2003 | 51 | 3-4 | 219-222
Article title

Karyotypic characterization and NOR analysis by different banding techniques of Rhamdia quelen from the first plateau of the Iguacu River (Brazil)

Title variants
Languages of publication
EN
Abstracts
EN
A population of R. quelen from the first plateau of the Iguacu River (Parana State, Brazil) was analyzed cytogenetically. A diploid set of 58 chromosomes was constituted by 32 M, 16 SM, 6 ST and 4 A (FN=116). In one individual a 2n=59 karyotype was determined due to the presence of one additional metacentric heterochromatic chromosome. NORs, detected by AgNO3 and CMA3 staining as well as fluorescence in situ hybridization with an 18S rDNA probe, are located at a terminal position on the short arms of a ST chromosome pair. C-banding marks the NORs and other weak bands distributed on telomeric regions of some chromosomes. These results give evidence that Rhamdia constitute, in terms of karyotypic macrostructure, a conserved group and support the idea that several synonymous species may be included in this genus.
Keywords
Publisher

Journal
Year
Volume
51
Issue
3-4
Pages
219-222
Physical description
Contributors
author
author
author
References
Document Type
SHORT REPORT
Publication order reference
A.S. Fenocchio, UnaM, FCEQyN., Dept. Genetica; Felix de Azara 1552, 3300 Posadas, Mnes., Argentina
Identifiers
YADDA identifier
bwmeta1.element.element-from-psjc-ad3ec1da-f31a-3eb2-afa5-659b664b725b
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.