Polymorphism of Sooty-fronted Spinetail (Synallaxis frontalis Aves: Furnariidae): Evidence of chromosomal rearrangements by pericentric inversion in autosomal macrochromosomes
AUTOR(ES)
Souza, Marcelo Santos de
FONTE
Genet. Mol. Biol.
DATA DE PUBLICAÇÃO
11/03/2019
RESUMO
Abstract The Passeriformes is the most diverse and cytogenetically well-known clade of birds, comprising approximately 5,000 species. The sooty-fronted spinetail (Synallaxis frontalis Aves: Furnariidae) species, which belongs to the order Passeriformes, is typically found in South America, where it is widely distributed. Polymorphisms provide genetic variability, important for several evolutionary processes, including speciation and adaptation to the environment. The aim of this work was to analyze the possible cytotypes and systemic events involved in the species polymorphism. Of the sampled 19 individuals, two thirds were polymorphic, an event supposedly linked to mutations resulting from genomic evolution that can be transmitted hereditarily. A chromosomal polymorphism was detected between the 1st and 3rdpairs of autosomal macrochromosomes. This type of polymorphism is related to a pericentric inversion in regions involving chromosomal rearrangements. Differently from other polymorphism studies that report a link between polymorphic chromosomes and phenotypic changes, S. frontalis did not present any morphological variation in the sampled individuals.
Documentos Relacionados
- Biologia reprodutiva de Synallaxis albescens (Aves: Furnariidae) em cerrado do Brasil central
- Biologia reprodutiva de Synallaxis albilora (aves: Furnariidae) no Pantanal de Poconé, Mato Grosso
- Pericentric inversion of chromosome 13.
- Familial pericentric inversion (13) detected by antenatal diagnosis.
- Pericentric inversion and sterility.