Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/12864
Tipo: Artigo
Título: The unique karyotype of Henochilus wheatlandii, a critically endangered fish living in a fast-developing region in Minas Gerais state, Brazil
Autor(es): Silva, Priscilla C.
Santos, Udson
Travenzoli, Natália M.
Zanuncio, Jose C.
Cioffi, Marcelo de B.
Dergam, Jorge A.
Abstract: Henochilus wheatlandii, the only species of this genus, is critically endangered and was considered extinct for over a century. The rediscovery of this fish in 1996 made it possible to study its phylogenetic relationships with other species in the subfamily Bryconinae. The aim of this study was to characterise the karyotype of H. wheatlandii. Standard staining, C-positive heterochromatin and nucleolar organiser region (NOR) banding, chromomycin A3 staining, and fluorescent in situ hybridisation (FISH) using 5S rDNA and 18S rDNA probes were conducted on nineteen specimens collected in the Santo Antonio River, a sub-basin of the Doce River in Ferros municipality, Minas Gerais State, Brazil. Henochilus wheatlandii shared the same diploid number and chromosome morphology as other species of Bryconinae. However, its heterochromatin distribution patterns, NOR localisation, and FISH patterns revealed a cytogenetic profile unique among Neotropical Bryconinae, emphasizing the evolutionary uniqueness of this threatened species.
Palavras-chave: Henochilus wheatlandii
Critically endangered fish
Editor: Plos One
Tipo de Acesso: Open Access
URI: https://doi.org/10.1371/journal.pone.0042278
http://www.locus.ufv.br/handle/123456789/12864
Data do documento: 27-Jul-2012
Aparece nas coleções:Artigos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
journal.pone.0042278.PDFtexto completo249,09 kBAdobe PDFThumbnail
Visualizar/Abrir


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