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dc.date.accessioned2017-12-27T18:10:48Z
dc.date.available2017-12-27T18:10:48Z
dc.date.created2016-01-21T21:06:13Z
dc.date.issued2016
dc.identifier.citationK, Supriya Rowe, Melissah Laskemoen, Terje Mohan, Dhananjai Price, Trevor Lifjeld, Jan Terje . Early diversification of sperm size in the evolutionary history of the old world leaf warblers (Phylloscopidae). Journal of Evolutionary Biology. 2016, 29(4), 777-789
dc.identifier.urihttp://hdl.handle.net/10852/59430
dc.description.abstractSperm morphological traits are highly variable among species and are commonly thought to evolve by post-copulatory sexual selection. However, little is known about the evolutionary dynamics of sperm morphology, and whether rates of evolutionary change are variable over time and among taxonomic groups. Here, we examine sperm morphology from 21 species of Old World leaf warblers (Phylloscopidae), a group of generally dull, sexually monochromatic birds, which are known to have high levels of extra-pair paternity. We found that sperm length differs markedly across species, spanning about 40% of the range observed across a larger selection of passerine birds. Furthermore, we found strong support for an ‘early-burst’ model of trait evolution, implying that the majority of divergence in sperm length has occurred early in the evolutionary history of this clade with subsequent evolutionary stasis. This large early divergence matches the early divergence reported in ecological traits (i.e. body size and feeding behaviour). Our findings demonstrate that rates of evolution in sperm morphology can change over time in passerine taxa, and that evolutionary stasis in sperm traits can occur even in species exhibiting characteristics consistent with moderate-to-high levels of sperm competition. It remains a major challenge to identify the selection mechanisms and possible constraints responsible for these variable rates of sperm evolution. The final version of this reseach has been published in the Journal of Evolutionary Biology. © 2016 Wileyen_US
dc.languageEN
dc.titleEarly diversification of sperm size in the evolutionary history of the old world leaf warblers (Phylloscopidae)en_US
dc.typeJournal articleen_US
dc.creator.authorK, Supriya
dc.creator.authorRowe, Melissah
dc.creator.authorLaskemoen, Terje
dc.creator.authorMohan, Dhananjai
dc.creator.authorPrice, Trevor
dc.creator.authorLifjeld, Jan Terje
cristin.unitcode185,28,8,7
cristin.unitnameEvolusjonær kjønnsforskning - SERG
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode1
dc.identifier.cristin1319908
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Evolutionary Biology&rft.volume=29&rft.spage=777&rft.date=2016
dc.identifier.jtitleJournal of Evolutionary Biology
dc.identifier.volume29
dc.identifier.issue4
dc.identifier.startpage777
dc.identifier.endpage789
dc.identifier.doihttp://dx.doi.org/10.1111/jeb.12826
dc.identifier.urnURN:NBN:no-62102
dc.type.documentTidsskriftartikkelen_US
dc.source.issn1010-061X
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/59430/2/Supriya%2Bet%2Bal%2B2016_pre-print.pdf
dc.type.versionSubmittedVersion
dc.relation.projectNFR/179569
dc.relation.projectNFR/196554


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