Polymorphism of Sooty-fronted Spinetail (Synallaxis frontalis Aves: Furnariidae): Evidence of chromosomal rearrangements by pericentric inversion in autosomal macrochromosomes

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...

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Bibliographic Details
Published in:Genetics and molecular biology 2019-01, Vol.42 (1), p.62-67
Main Authors: Souza, Marcelo Santos de, Barcellos, Suziane Alves, Costa, Alice Lemos, Kretschmer, Rafael, Garnero, Analía Del Valle, Gunski, Ricardo José
Format: Article
Language:English
Subjects:
Animal Genetics
Aves
BIOCHEMISTRY & MOLECULAR BIOLOGY
Biological evolution
Birds
Chromosomal polymorphism
Chromosome rearrangements
Chromosomes
cytogenetics
evolution
Furnariidae
Gene polymorphism
Genetic variability
GENETICS & HEREDITY
Inversion
Mutation
Passeriformes
Polymorphism
Speciation
Species
Synallaxis frontalis
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Summary: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.
ISSN:1415-4757
1678-4685
1678-4685
DOI:10.1590/1678-4685-GMB-2018-0039