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dc.contributor.authorMinter, EJA
dc.contributor.authorWatts, PC
dc.contributor.authorLowe, CD
dc.contributor.authorBrockhurst, MA
dc.date.accessioned2017-03-09T13:18:19Z
dc.date.issued2015-06
dc.description.abstractNatural populations of free-living protists often exhibit high-levels of intraspecific diversity, yet this is puzzling as classic evolutionary theory predicts dominance by genotypes with high fitness, particularly in large populations where selection is efficient. Here, we test whether negative frequency-dependent selection (NFDS) plays a role in the maintenance of diversity in the marine flagellate Oxyrrhis marina using competition experiments between multiple pairs of strains. We observed strain-specific responses to frequency and density, but an overall signature of NFDS that was intensified at higher population densities. Because our strains were not selected a priori on the basis of particular traits expected to exhibit NFDS, these data represent a relatively unbiased estimate of the role for NFDS in maintaining diversity in protist populations. These findings could help to explain how bloom-forming plankton, which periodically achieve exceptionally high population densities, maintain substantial intraspecific diversity.en_GB
dc.description.sponsorshipE.J.A.M. was supported by a NERC research studentship (NE/H025472/2) as part of the UK Ocean Acidification Research Programme.en_GB
dc.identifier.citationVol. 11 (6), article 20150192en_GB
dc.identifier.doi10.1098/rsbl.2015.0192
dc.identifier.urihttp://hdl.handle.net/10871/26373
dc.language.isoenen_GB
dc.publisherRoyal Societyen_GB
dc.relation.urlhttps://www.ncbi.nlm.nih.gov/pubmed/26063750en_GB
dc.rightsOpen access. © 2015 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.en_GB
dc.subjectdensity dependenceen_GB
dc.subjectdiversityen_GB
dc.subjectfrequency dependenceen_GB
dc.subjectplanktonen_GB
dc.subjectselectionen_GB
dc.subjectDinoflagellidaen_GB
dc.subjectGenetic Variationen_GB
dc.subjectPopulation Densityen_GB
dc.subjectSelection, Geneticen_GB
dc.titleNegative frequency-dependent selection is intensified at higher population densities in protist populationsen_GB
dc.typeArticleen_GB
dc.date.available2017-03-09T13:18:19Z
exeter.place-of-publicationEnglanden_GB
dc.descriptionThis is the final version of the article. Available from the Royal Society via the DOI in this record.en_GB
dc.identifier.journalBiology Lettersen_GB


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