| Occurrence of natural triploidy in Rhamdia quelen (Siluriformes, Heptapteridae). | |
| | |
MedLine Citation:
|
PMID: 20882489 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Five specimens of Rhamdia quelen collected from the Lindóia Stream, PR, Brazil, were cytogenetically analyzed. The diploid chromosome number found was 58, including 30 metacentric, 16 submetacentric, 10 subtelocentric, and 2 acrocentric chromosomes. Supernumerary or B chromosomes, frequently observed in this fish group, were not detected. One of the individuals was triploid, with 3n = 87. A silver-stained nucleolar organizer region was found on a pair of submetacentric chromosomes of the diploid specimens, and on three chromosomes of the triploid individual, confirming triploidy. Treatment with fluorochrome chromomycin A(3) revealed fluorescent bands coincident with those of the silver-stained nucleolar organizer region, in both diploid and triploid individuals, showing that this is a GC-rich region. Heterochromatin distribution was visualized by the C-banding technique, mainly in the terminal chromosome regions of the individuals and was also observed in the pericentromeric regions of some chromosomes and at both telomeres. |
| | |
Authors:
|
J R Tsuda; V P O de Moraes; L Giuliano-Caetano; A L Dias |
Related Documents
:
|
3943769 - Alpha-l-fucosidase phenotyping in human placentae, semen and seminal stains. 60349 - Section preparation of human marrow for light microscopy. 11596509 - Immunocytochemical study of the action of cis-dichlorodiamino platinum on the human met... 2689459 - Ki-67 detects a nuclear matrix-associated proliferation-related antigen. ii. localizati... 1126049 - The unique green phenomenon and colour vision. 52989 - Selective staining of animal chromosomes with synthetic dyes following iodine-dye-proce... 2573569 - Isolation and analysis of dna marker revealing restriction fragment length polymorphism... 11934389 - Linkage disequilibrium and founder effect analysis of the nf1 gene in french canadians ... 18019369 - A de novo (1;2;3;15;18) chromosome rearrangement with six nonreciprocal translocations. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-09-28 |
Journal Detail:
|
Title: Genetics and molecular research : GMR Volume: 9 ISSN: 1676-5680 ISO Abbreviation: Genet. Mol. Res. Publication Date: 2010 |
Date Detail:
|
Created Date: 2010-09-30 Completed Date: 2010-11-23 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101169387 Medline TA: Genet Mol Res Country: Brazil |
Other Details:
|
Languages: eng Pagination: 1929-35 Citation Subset: IM |
Affiliation:
|
Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina, Londrina, PR, Brasil. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Brazil Catfishes / genetics* Cytogenetics / methods Polyploidy* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Increased micronucleus frequency in exfoliated cells of the buccal mucosa in hairdressers.
Next Document: Comparisons of DNA marker-based genetic diversity with phenotypic estimates in maize grown in Pakist...