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Interspecies chromosome mapping in Caprimulgiformes, Piciformes, Suliformes, and Trogoniformes (Aves): cytogenomic insight into microchromosome organization and karyotype evolution in birds

Kretschmer, Rafael, de Souza, Marcelo Santos, Furo, Ivanete de Oliveira, Romanov, Michael N., Gunski, Ricardo José, Garnero, Analía del Valle, de Freitas, Thales Renato Ochotorena, de Oliveira, Edivaldo Herculano Corrêa, O’Connor, Rebecca E., Griffin, Darren K. and others. (2021) Interspecies chromosome mapping in Caprimulgiformes, Piciformes, Suliformes, and Trogoniformes (Aves): cytogenomic insight into microchromosome organization and karyotype evolution in birds. Cells, 10 (4). Article Number 826. ISSN 2073-4409. (doi:10.3390/cells10040826) (KAR id:89153)

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Interchromosomal rearrangements involving microchromosomes are rare events in birds. To date, they have been found mostly in Psittaciformes, Falconiformes, and Cuculiformes, although only a few orders have been analyzed. Hence, cytogenomic studies focusing on microchromosomes in species belonging to different bird orders are essential to shed more light on the avian chromosome and karyotype evolution. Based on this, we performed a comparative chromosome mapping for chicken microchromosomes 10 to 28 using interspecies BAC-based FISH hybridization in five species, representing four Neoaves orders (Caprimulgiformes, Piciformes, Suliformes, and Trogoniformes). Our results suggest that the ancestral microchromosomal syntenies are conserved in Pteroglossus inscriptus (Piciformes), Ramphastos tucanus tucanus (Piciformes), and Trogon surrucura surrucura (Trogoniformes). On the other hand, chromosome reorganization in Phalacrocorax brasilianus (Suliformes) and Hydropsalis torquata (Caprimulgiformes) included fusions involving both macro- and microchromosomes. Fissions in macrochromosomes were observed in P. brasilianus and H. torquata. Relevant hypothetical Neognathae and Neoaves ancestral karyotypes were reconstructed to trace these rearrangements. We found no interchromosomal rearrangement involving microchromosomes to be shared between avian orders where rearrangements were detected. Our findings suggest that convergent evolution involving microchromosomal change is a rare event in birds and may be appropriate in cytotaxonomic inferences in orders where these rearrangements occurred.

Item Type: Article
DOI/Identification number: 10.3390/cells10040826
Projects: CNPq, Proc. PDE 204792/2018-5 to Rafael Kretschmer, FAPERGS, 16/2551-000485-7 to Thales Renato Ochotorena de Freitas, BB/K008226/1 to Darren K. Griffin
Uncontrolled keywords: avian cytogenomics; evolution; genome organization; FISH; chromosomal rearrangements
Subjects: Q Science > QH Natural history > QH426 Genetics
Q Science > QH Natural history > QH581.2 Cell Biology
Q Science > QL Zoology
Divisions: Divisions > Division of Natural Sciences > Biosciences
Signature Themes: Food Systems, Natural Resources and Environment
Funders: Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul (
National Council for Scientific and Technological Development (
Biotechnology and Biological Sciences Research Council (
Depositing User: Mike Romanov
Date Deposited: 11 Jul 2021 16:57 UTC
Last Modified: 12 Jul 2022 10:41 UTC
Resource URI: (The current URI for this page, for reference purposes)
Kretschmer, Rafael:
de Souza, Marcelo Santos:
Furo, Ivanete de Oliveira:
Romanov, Michael N.:
de Oliveira, Edivaldo Herculano Corrêa:
O’Connor, Rebecca E.:
Griffin, Darren K.:
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