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Phylogenomic analysis of Lake Malawi cichlid fishes : Further evidence that the three-stage model of diversification does not fit

Phylogenomic analysis of Lake Malawi cichlid fishes : Further evidence that the three-stage model of diversification does not fit

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HULSEY, Christopher Darrin, Jimmy ZHENG, Brant C. FAIRCLOTH, Axel MEYER, Michael E. ALFARO, 2017. Phylogenomic analysis of Lake Malawi cichlid fishes : Further evidence that the three-stage model of diversification does not fit. In: Molecular Phylogenetics and Evolution. 114, pp. 40-48. ISSN 1055-7903. eISSN 1095-9513

@article{Hulsey2017-09Phylo-40060, title={Phylogenomic analysis of Lake Malawi cichlid fishes : Further evidence that the three-stage model of diversification does not fit}, year={2017}, doi={10.1016/j.ympev.2017.05.027}, volume={114}, issn={1055-7903}, journal={Molecular Phylogenetics and Evolution}, pages={40--48}, author={Hulsey, Christopher Darrin and Zheng, Jimmy and Faircloth, Brant C. and Meyer, Axel and Alfaro, Michael E.} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/40060"> <dcterms:issued>2017-09</dcterms:issued> <dcterms:abstract xml:lang="eng">Adaptive radiations could often occur in discrete stages. For instance, the species flock of ∼1000 species of Lake Malawi cichlid fishes might have only diverged once between rocky and sandy environments during the initial stage of their diversification. All further diversification within the rock-dwelling (mbuna) or sand-dwelling (utaka) cichlids would have occurred during a subsequent second stage of extensive trophic evolution that was followed by a third stage of sexual trait divergence. We provide an improved phylogenetic framework for Malawi cichlids to test this three-stage hypothesis based on newly reconstructed phylogenetic relationships among 32 taxonomically disparate Malawi cichlids species. Using several reconstruction methods and 1037 ultra-conserved element (UCE) markers, we recovered a molecular phylogeny that confidently resolved relationships among most of the Malawi lineages sampled when a bifurcating framework was enforced. These bifurcating reconstructions also indicated that the sand-dwelling species Cyathochromis obliquidens was well-nested within the primarily rock-dwelling radiation known as the mbuna. In contrast to predictions from the three-stage model of vertebrate diversification, the recovered phylogeny reveals an initial colonization of rocky reefs, followed by substantial diversification of rock-dwelling lineages, and then at least one instance of subsequent evolution back into sandy habitats. This repeated evolution into major habitat types provides further evidence that the three-stage model of Malawi cichlid diversification has numerous exceptions.</dcterms:abstract> <dc:contributor>Faircloth, Brant C.</dc:contributor> <dc:creator>Alfaro, Michael E.</dc:creator> <dc:creator>Hulsey, Christopher Darrin</dc:creator> <dc:contributor>Meyer, Axel</dc:contributor> <dc:creator>Faircloth, Brant C.</dc:creator> <dcterms:title>Phylogenomic analysis of Lake Malawi cichlid fishes : Further evidence that the three-stage model of diversification does not fit</dcterms:title> <dc:language>eng</dc:language> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/40060"/> <dc:creator>Meyer, Axel</dc:creator> <dc:creator>Zheng, Jimmy</dc:creator> <dc:contributor>Alfaro, Michael E.</dc:contributor> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-09-13T13:40:22Z</dc:date> <dc:contributor>Hulsey, Christopher Darrin</dc:contributor> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-09-13T13:40:22Z</dcterms:available> <dc:contributor>Zheng, Jimmy</dc:contributor> </rdf:Description> </rdf:RDF>

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