Chromosomal evolution and phylogenetic considerations in cuckoos (Aves, Cuculiformes, Cuculidae)

The Cuckoos have a long history of difficult classification. The species of this order have been the subject of several studies based on osteology, behavior, ecology, morphology and molecular data. Despite this, the relationship between Cuculiformes and species of other orders remains controversial....

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Bibliographic Details
Published in:PloS one 2020-05, Vol.15 (5), p.e0232509-e0232509
Main Authors: Dos Santos, Michelly da Silva, Kretschmer, Rafael, Furo, Ivanete de Oliveira, Gunski, Ricardo José, Del Valle Garnero, Analía, Valeri, Mirela Pelizaro, O'Brien, Patricia C M, Ferguson-Smith, Malcolm A, de Oliveira, Edivaldo Herculano Corrêa
Format: Article
Language:English
Subjects:
Animals
Biological Evolution
Biological research
Biology and Life Sciences
Biomedical materials
Birds
Birds - classification
Birds - genetics
Bone marrow
Chromosome Mapping
Chromosome Painting
Chromosome rearrangements
Chromosomes
Chromosomes - genetics
Computer and Information Sciences
Cuckoos
Cuculidae
Cuculiformes
Cytogenetics
Diploids
Ecology
Evolution
Evolution, Molecular
Evolutionary genetics
Experiments
Female
Gene mapping
Genetic aspects
Genomics
Guira guira
In Situ Hybridization, Fluorescence
Karyotype
Male
Mapping
Morphology
Natural history
Phylogenetics
Phylogeny
Piaya cayana
Research and Analysis Methods
Sex chromosomes
Species
Species classification
Species diversity
Species Specificity
Studies
Synteny
Veterinary medicine
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Summary:The Cuckoos have a long history of difficult classification. The species of this order have been the subject of several studies based on osteology, behavior, ecology, morphology and molecular data. Despite this, the relationship between Cuculiformes and species of other orders remains controversial. In this work, two species of Cuculidae, Guira guira (Gmelin, 1788) and Piaya cayana (Linnaeus, 1766), were analyzed by means of comparative chromosome painting in order to study the chromosome evolution of this group and to undertake the first chromosome mapping of these species. Our results demonstrate high chromosomal diversity, with 2n = 76 in G. guira, with fission and fusion events involving ancestral syntenies, while P. cayana presented only fissions, which were responsible for the high diploid number of 2n = 90. Interestingly, there were no chromosomal rearrangements in common between these species. Our results, based on Giemsa staining, were compared with previous data for other cuckoos and also with taxa proposed as sister-groups of Cuculiformes (Otidiformes, Musophagiformes and Opisthocomiformes). Cytogenetic comparisons demonstrated that cuckoo species can be divided into at least three major groups. In addition, we found no evidence to place Cuculiformes close to the groups proposed previously as sister-groups.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0232509