Ctenophore relationships and their placement as the sister group to all other animals

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dc.contributor.authorWhelan, Nathan V.
dc.contributor.authorKocot, Kevin M.
dc.contributor.authorMoroz, Tatiana P.
dc.contributor.authorMukherjee, Krishanu
dc.contributor.authorWilliams, Peter
dc.contributor.authorPaulay, Gustav
dc.contributor.authorMoroz, Leonid L.
dc.contributor.authorHalanych, Kenneth M.
dc.contributor.otherAuburn University
dc.contributor.otherUnited States Department of the Interior
dc.contributor.otherUS Fish & Wildlife Service
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherUniversity of Florida
dc.date.accessioned2023-10-02T15:17:08Z
dc.date.available2023-10-02T15:17:08Z
dc.date.issued2017
dc.description.abstractCtenophora, comprising approximately 200 described species, is an important lineage for understanding metazoan evolution and is of great ecological and economic importance. Ctenophore diversity includes species with unique colloblasts used for prey capture, smooth and striated muscles, benthic and pelagic lifestyles, and locomotion with ciliated paddles or muscular propulsion. However, the ancestral states of traits are debated and relationships among many lineages are unresolved. Here, using 27 newly sequenced ctenophore transcriptomes, publicly available data and methods to control systematic error, we establish the placement of Ctenophora as the sister group to all other animals and refine the phylogenetic relationships within ctenophores. Molecular clock analyses suggest modern ctenophore diversity originated approximately 350 million years ago +/- 88 million years, conflicting with previous hypotheses, which suggest it originated approximately 65 million years ago. We recover Eupiokamis duniapae-a species with striated muscles-as the sister lineage to other sampled ctenophores. Ancestral state reconstruction shows that the most recent common ancestor of extant ctenophores was pelagic, possessed tentacles, was bio-luminescent and did not have separate sexes. Our results imply at least two transitions from a pelagic to benthic lifestyle within Ctenophora, suggesting that such transitions were more common in animal diversification than previously thought.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.citationWhelan, N. V., Kocot, K. M., Moroz, T. P., Mukherjee, K., Williams, P., Paulay, G., Moroz, L. L., & Halanych, K. M. (2017). Ctenophore relationships and their placement as the sister group to all other animals. In Nature Ecology & Evolution (Vol. 1, Issue 11, pp. 1737–1746). Springer Science and Business Media LLC. https://doi.org/10.1038/s41559-017-0331-3
dc.identifier.doi10.1038/s41559-017-0331-3
dc.identifier.orcidhttps://orcid.org/0000-0002-8658-9674
dc.identifier.orcidhttps://orcid.org/0000-0002-3542-2102
dc.identifier.orcidhttps://orcid.org/0000-0002-1333-3176
dc.identifier.urihttps://ir.ua.edu/handle/123456789/12581
dc.languageEnglish
dc.language.isoen_US
dc.publisherNature Portfolio
dc.subjectPHYLOGENETIC SIGNAL
dc.subjectFEEDING-BEHAVIOR
dc.subjectDATA SETS
dc.subjectGENOME
dc.subjectTREE
dc.subjectRESOLUTION
dc.subjectEVOLUTION
dc.subjectORIGINS
dc.subjectSPONGES
dc.subjectBIOLOGY
dc.subjectEcology
dc.subjectEvolutionary Biology
dc.titleCtenophore relationships and their placement as the sister group to all other animalsen_US
dc.typeArticle
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