Consulta: creatorFacets:"Goldschmidt,Beatriz"
Registros recuperados: 5
Data/hora: 13/06/2024 05:25:29

Study of the karyotype of Oryzoborus maximiliani (Passeriformes - Aves) using young feather pulp cultures
Provedor de dados: Genetics and Molecular Biology
Autores: Goldschmidt,Beatriz; Nogueira,Denise Monnerat; Silva,Katia Pacheco Araujo; Souza,Lucia Moreno de.
The investigation of the karyotype of Oryzoborus maximiliani in living birds utilizing young feather pulp culture is described. The species karyotype was established as 2n = 72 with unequivocal identification of the sexual chromosome pair. Evolutionary considerations are raised.
Tipo: Info:eu-repo/semantics/other
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572000000200022

Karyotype description of two Neotropical Psittacidae species: the endangered Hyacinth Macaw, Anodorhynchus hyacinthinus, and the Hawk-headed Parrot, Deroptyus accipitrinus (Psittaciformes: Aves), and its significance for conservation plans
Provedor de dados: Genetics and Molecular Biology
Autores: Lunardi,Vitor de Oliveira; Francisco,Mercival Roberto; Rocha,Guaracy Tadeu; Goldschmidt,Beatriz; Galetti Junior,Pedro Manoel.
Neotropical parrots are among the most threatened groups of birds in the world, and many species are facing extinction in a near future. At the same time, the taxonomic position of many species remains unclear. Karyotype analysis has been used to elucidate the phylogenetic status of many bird groups, also providing important information for both in situ and ex situ conservation plans. The objective of the present study was to describe for the first time the karyotypes of the endangered Hyacinth Macaw, Anodorhynchus hyacinthinus, and of the Hawk-headed Parrot, Deroptyus accipitrinus. A diploid number of 2n = 70 and a karyotype similar to the main pattern previously found for the genera Ara, Cyanopsitta, Aratinga, Propyrrhura, Pionites, Pionopsitta,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian karyotype; Anodorhynchus; Deroptyus; Psittaciformes; Conservation biology; Cytotaxonomy.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000300011

The karyotype of the critically endangered Lear's macaw, Anodorhynchus leari Bonaparte 1856 (Aves, Psittaciformes)
Provedor de dados: Genetics and Molecular Biology
Autores: Nogueira,Denise Monnerat; Souza,Lucia Moreno de; Goldschmidt,Beatriz; Silva,Christiano Pinheiro da; Monsores,Denise Wilches.
We used conventional chromosomal staining to describe the karyotype of the critically endangered Lear's macaw, Anodorhynchus leari Bonaparte 1856. A diploid number of 2n = 70 and a karyotype similar to that of its congener Anodorhynchus hyacinthinus suggests that chromosomal rearrangements were not the main evolutionary mechanism in the genus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds; Karyotype; Chromosomes; Psittaciformes; Endangered species.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000400014

Cytogenetic study in natural hybrids of Callithrix (Callitrichidae: Primates) in the Atlantic forest of the state of Rio de Janeiro, Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Nogueira,Denise M.; Ferreira,Ana Maria R.; Goldschmidt,Beatriz; Pissinatti,Alcides; Carelli,Juliane B.; Verona,Carlos E.
In the Atlantic forest of Rio de Janeiro, Callithrix aurita (É. Geoffroy in Humboldt, 1812) is a native species vulnerable to extinction and C. jacchus (Linnaeus, 1758) and C. penicillata (É. Geoffroy, 1812) are invasive species. The major threats to the native species are habitat degradation and hybridization, although there are currently no genetic data about natural hybrids available. Previous studies have revealed that species of the Callithrix genus are extremely homogeneous in their karyotypes with the exceptions of the morphology and size of the Y chromosome and its nucleolar organizer region (NOR) banding pattern. Three male marmosets captured in the wild in Guapimirim municipality, Rio de Janeiro, Brazil, considered as possible hybrids between C....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marmosets; Y-chromosome; Karyotype; Hybridization.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000200002

Chromosome study in two Aratinga species (A. guarouba and A. acuticaudata) (Psittaciformes)
Provedor de dados: Brazilian Journal of Genetics
Autores: Goldschmidt,Beatriz; Nogueira,Denise M.; Monsores,Denise W.; Souza,Lúcia M.
The karyotypes of two species of Psittacidae of the genus Aratinga, Aratinga guarouba and A. acuticaudata were studied for the first time. The metaphases were obtained using a short term culture of feather pulp. These karyotypes are compared with others of the genus and their karyological relationships in the Psittaciformes are discussed
Tipo: Info:eu-repo/semantics/other
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000400017