Document Detail


Occurrence of pre-nucleolar bodies and 45S rDNA location on the chromosomes of the ant Mycocepurus goeldii (Forel) (Formicidae, Myrmicinae, Attini).
MedLine Citation:
PMID:  22458441     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The ant Mycocepurus goeldii (Forel) is known for having a relict karyotype with low chromosome number and the present study help the understanding of this ant cytogenetics by describing the occurrence of pre-nucleolar bodies in their chromosomes using impregnation with silver nitrate (Ag-NOR) and the location of 45S rDNA sites by means of the FISH (fluorescent in situ hybridization) technique. Several spots were observed surrounding all chromosomes when submitted to the Ag-NOR technique. These unusual markings were observed in both chromatids of metaphase and early anaphase chromosomes, and are associated to the presence of pre-nucleolar bodies, allowing the observation of the phenomenon of nucleologenesis. Although recent studies have shown that all chromosomes of M. goeldii exhibit centromeric or pericentromeric markings for the CMA(3) fluorochrome, the FISH technique indicated the presence of 45S rDNA in only one pair of chromosomes that differed in the number of CMA(3) markings observed for this species, pointing that the other markings observed with this fluorochrome do not match the sequences in ribosomal genes.
Authors:
Luísa Antônia Campos Barros; Hilton Jeferson Alves Cardoso De Aguiar; Vanderly Andrade-Souza; Cléa Dos Santos Ferreira Mariano; Jacques Hubert Charles Delabie; Silvia Das Graças Pompolo
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-21
Journal Detail:
Title:  Hereditas     Volume:  149     ISSN:  1601-5223     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-3-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374654     Medline TA:  Hereditas     Country:  -    
Other Details:
Languages:  ENG     Pagination:  50-54     Citation Subset:  -    
Copyright Information:
© 2012 The Authors.
Affiliation:
Departamento de Biologia Geral, Laboratório de Citogenética de Insetos, Universidade Federal de Viçosa, Viçosa-MG, Brazil Programa de Pós-graduação em Genética e Melhoramento, Universidade Federal de Viçosa - UFV - MG, Brazil Laboratório de Mirmecologia, CEPEC/CEPLAC, Itabuna-BA, CP 7, Brazil Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz; Ilhéus-BA, Brazil Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz, Ilhéus-BA, Brazil.
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