The genomic timeline of cichlid fish diversification across continents

Cichlid fishes are celebrated for their vast taxonomic, phenotypic, and ecological diversity; however, a central aspect of their evolution — the timeline of their diversification — remains contentious. Here, we generate draft genome assemblies of 14 species representing the global cichlid diversity...

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Bibliographic Details
Published in:Nature communications 2020-11, Vol.11 (1), p.5895-5895, Article 5895
Main Authors: Matschiner, Michael, Böhne, Astrid, Ronco, Fabrizia, Salzburger, Walter
Format: Article
Language:English
Subjects:
45
45/23
631/181/757
631/601/2722
Animals
Bayes Theorem
Biodiversity
Cichlids - classification
Cichlids - genetics
Cichlids - physiology
Evolution, Molecular
Fossils
Genetic Speciation
Genome
Genomics
Humanities and Social Sciences
multidisciplinary
Phylogeny
Science
Science (multidisciplinary)
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Summary:Cichlid fishes are celebrated for their vast taxonomic, phenotypic, and ecological diversity; however, a central aspect of their evolution — the timeline of their diversification — remains contentious. Here, we generate draft genome assemblies of 14 species representing the global cichlid diversity and integrate these into a new phylogenomic hypothesis of cichlid and teleost evolution that we time-calibrate with 58 re-evaluated fossil constraints and a new Bayesian model accounting for fossil-assignment uncertainty. Our results support cichlid diversification long after the breakup of the supercontinent Gondwana and lay the foundation for precise temporal reconstructions of the exceptional continental cichlid adaptive radiations. Cichlids are a model for adaptive radiation, but the timing of their diversification is debated. Here the authors assemble 14 cichlid genomes, introduce a Bayesian approach to account for fossil-assignment uncertainty, and present a dated phylogenomic hypothesis of cichlid and teleost evolution.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-020-17827-9