Phylogenomics of a putatively convergent novelty : did hypertrophied lips evolve once or repeatedly in Lake Malawi cichlid fishes?

Hulsey, Christopher Darrin; Zheng, Jimmy; Holzman, Roi; Alfaro, Michael E.; Olave, Melisa; Meyer, Axel

Phylogenomics of a putatively convergent novelty : did hypertrophied lips evolve once or repeatedly in Lake Malawi cichlid fishes?

Dateien

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Datum

2018

Autor:innen

Hulsey, Christopher Darrin

Zheng, Jimmy

Holzman, Roi

Alfaro, Michael E.

Olave, Melisa

Meyer, Axel

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

BMC Evolutionary Biology. 2018, 18, 179. eISSN 1471-2148. Available under: doi: 10.1186/s12862-018-1296-9

Zusammenfassung

Background
Phylogenies provide critical information about convergence during adaptive radiation. To test whether there have been multiple origins of a distinctive trophic phenotype in one of the most rapidly radiating groups known, we used ultra-conserved elements (UCEs) to examine the evolutionary affinities of Lake Malawi cichlids lineages exhibiting greatly hypertrophied lips.

Results
The hypertrophied lip cichlids Cheilochromis euchilus, Eclectochromis ornatus, Placidochromis “Mbenji fatlip”, and Placidochromis milomo are all nested within the non-mbuna clade of Malawi cichlids based on both concatenated sequence and single nucleotide polymorphism (SNP) inferred phylogenies. Lichnochromis acuticeps that exhibits slightly hypertrophied lips also appears to have evolutionary affinities to this group. However, Chilotilapia rhoadesii that lacks hypertrophied lips was recovered as nested within the species Cheilochromis euchilus. Species tree reconstructions and analyses of introgression provided largely ambiguous patterns of Malawi cichlid evolution.

Conclusions
Contrary to mitochondrial DNA phylogenies, bifurcating trees based on our 1024 UCE loci supported close affinities of Lake Malawi lineages with hypertrophied lips. However, incomplete lineage sorting in Malawi tends to render these inferences more tenuous. Phylogenomic analyses will continue to provide powerful inferences about whether phenotypic novelties arose once or multiple times during adaptive radiation.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Schlagwörter

Adaptive radiation, East African Rift Lakes, Fatlips, Phylogenomics

Zitieren

ISO 690

HULSEY, Christopher Darrin, Jimmy ZHENG, Roi HOLZMAN, Michael E. ALFARO, Melisa OLAVE, Axel MEYER, 2018. Phylogenomics of a putatively convergent novelty : did hypertrophied lips evolve once or repeatedly in Lake Malawi cichlid fishes?. In: BMC Evolutionary Biology. 2018, 18, 179. eISSN 1471-2148. Available under: doi: 10.1186/s12862-018-1296-9

BibTex

@article{Hulsey2018-11-29Phylo-44293,
  year={2018},
  doi={10.1186/s12862-018-1296-9},
  title={Phylogenomics of a putatively convergent novelty : did hypertrophied lips evolve once or repeatedly in Lake Malawi cichlid fishes?},
  volume={18},
  journal={BMC Evolutionary Biology},
  author={Hulsey, Christopher Darrin and Zheng, Jimmy and Holzman, Roi and Alfaro, Michael E. and Olave, Melisa and Meyer, Axel},
  note={Article Number: 179}
}

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