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dc.contributor.authorHanschen, Erik R.
dc.contributor.authorHerron, Matthew D.
dc.contributor.authorWiens, John J.
dc.contributor.authorNozaki, Hisayoshi
dc.contributor.authorMichod, Richard E.
dc.date.accessioned2018-05-31T18:30:00Z
dc.date.available2018-05-31T18:30:00Z
dc.date.issued2018-02
dc.identifier.citationHanschen, E. R., Herron, M. D., Wiens, J. J., Nozaki, H. and Michod, R. E. (2018), Repeated evolution and reversibility of self‐fertilization in the volvocine green algae. Evolution, 72: 386-398. doi:10.1111/evo.13394en_US
dc.identifier.issn00143820
dc.identifier.pmid29134623
dc.identifier.doi10.1111/evo.13394
dc.identifier.urihttp://hdl.handle.net/10150/627858
dc.description.abstractOutcrossing and self-fertilization are fundamental strategies of sexual reproduction, each with different evolutionary costs and benefits. Self-fertilization is thought to be an evolutionary dead-end strategy, beneficial in the short term but costly in the long term, resulting in self-fertilizing species that occupy only the tips of phylogenetic trees. Here, we use volvocine green algae to investigate the evolution of self-fertilization. We use ancestral-state reconstructions to show that self-fertilization has repeatedly evolved from outcrossing ancestors and that multiple reversals from selfing to outcrossing have occurred. We use three phylogenetic metrics to show that self-fertilization is not restricted to the tips of the phylogenetic tree, a finding inconsistent with the view of self-fertilization as a dead-end strategy. We also find no evidence for higher extinction rates or lower speciation rates in selfing lineages. We find that self-fertilizing species have significantly larger colonies than outcrossing species, suggesting the benefits of selfing may counteract the costs of increased size. We speculate that our macroevolutionary results on self-fertilization (i.e., non-tippy distribution, no decreased diversification rates) may be explained by the haploid-dominant life cycle that occurs in volvocine algae, which may alter the costs and benefits of selfing.en_US
dc.description.sponsorshipNational Aeronautics and Space Administration [NNX13AH41G, NNX15AR33G]; National Institute of Health [GM084905]; National Science Foundation [MCB-1412395, DEB-1457701]; MEXT/JSPS KAKENHI [15K14590, 16H02518]en_US
dc.language.isoenen_US
dc.publisherWILEYen_US
dc.relation.urlhttp://doi.wiley.com/10.1111/evo.13394en_US
dc.rights© 2017 The Author(s). Evolution © 2017 The Society for the Study of Evolution.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectHaploiden_US
dc.subjectphylogeneticsen_US
dc.subjectself-fertilizationen_US
dc.subjectsexual reproductionen_US
dc.subjectsexen_US
dc.subjectvolvocine green algaeen_US
dc.titleRepeated evolution and reversibility of self-fertilization in the volvocine green algae*en_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Ecol & Evolutionary Biolen_US
dc.identifier.journalEVOLUTIONen_US
dc.description.note12 month embargo; published online: 14 November 2017en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal accepted manuscripten_US
dc.source.journaltitleEvolution
dc.source.volume72
dc.source.issue2
dc.source.beginpage386
dc.source.endpage398


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