Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/17549
Tipo: Artigo
Título: Contribution of cytogenetics to the debate on the Paraphyly of Pachycondyla spp. (Hymenoptera, Formicidae, Ponerinae)
Autor(es): Pompolo, Silvia das Graças
Mariano, Cléa dos Santos Ferreira
Silva, Janisete Gomes
Gomes, Janisete
Abstract: We present evidence of the paraphyly of the ant genus Pachycondyla resulting from our cytogenetic studies on 29 populations in 18 species from Brazil and French Guyana. It is likely that karyotypes with a large number of chromosomes and comprising mostly small acrocentric chromosomes in species within the Pachycondyla stricto sensu group resulted from a succession of centric fission events. On the other hand, karyotypes with a small chromosome number comprising mostly metacentric chromosomes are also interpreted as little derived and tend to undergo centric fission. The karyotypes of the group Neoponera are more heterogeneous and probably undergo successive cycles of rearrangements tending to increase the chromosome number by centric fission. The apicalis and verenae complexes form two probable sister groups that evolved independently due to centric fissions (verenae) and pericentric inversions (apicalis). Our results reveal the karyotype diversity in the genus and reinforce the hypothesis on the paraphyly of Pachycondyla.
Palavras-chave: Contribution of Cytogenetics
Paraphyly of Pachycondyla spp.
Editor: Psyche: A Journal of Entomology
Tipo de Acesso: Open Access
URI: http://dx.doi.org/10.1155/2012/973897
http://www.locus.ufv.br/handle/123456789/17549
Data do documento: 29-Jul-2011
Aparece nas coleções:Artigos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
artigo.pdftexto completo2,06 MBAdobe PDFThumbnail
Visualizar/Abrir


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.