The molecular cytogenetic characterization of Conopophaga lineata indicates a common chromosome rearrangement in the Parvorder Furnariida (Aves, Passeriformes)

Abstract Cytogenetic analyses of the Suboscines species are still scarce, and so far, there is no karyotype description of any species belonging to the family Conopophagidae. Thus, the aim of this study is to describe and analyze the karyotype of Conopophaga lineata by chromosome painting using Gall...

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Main Authors: Thays Duarte de Oliveira, Rafael Kretschmer, Natasha Ávila Bertocchi, Patricia C.M. O’Brien, Malcolm A. Ferguson-Smith, Analía del Valle Garnero, Edivaldo Herculano Correa de Oliveira, Ricardo José Gunski
Format: Article
Language:English
Published: Sociedade Brasileira de Genética 2020-06-01
Series:Genetics and Molecular Biology
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Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000500204&tlng=en
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Summary:Abstract Cytogenetic analyses of the Suboscines species are still scarce, and so far, there is no karyotype description of any species belonging to the family Conopophagidae. Thus, the aim of this study is to describe and analyze the karyotype of Conopophaga lineata by chromosome painting using Gallus gallus (GGA) probes and to identify the location of the 18/28S rDNA cluster. Metaphases were obtained from fibroblast culture from two individuals of C. lineata. We observed a diploid number of 2n=78. GGA probes showed that most ancestral syntenies are conserved, except for the fission of GGA1 and GGA2, into two distinct pairs each. We identified the location of 18S rDNA genes in a pair of microchromosomes. The fission of the syntenic group corresponding to GGA2 was observed in other Furnariida, and hence may correspond to a chromosomal synapomorphy for the species of Parvorder Furnariida.
ISSN:1678-4685