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dc.contributor.authorLehtonen, Jussi
dc.contributor.authorParker, Geoff A
dc.date.accessioned2024-08-15T12:31:23Z
dc.date.available2024-08-15T12:31:23Z
dc.date.issued2024
dc.identifier.citationLehtonen, J., & Parker, G. A. (2024). The correlation between anisogamy and sexual selection intensity : the broad theoretical predictions. <i>Evolution Letters</i>, <i>Early online</i>. <a href="https://doi.org/10.1093/evlett/qrae029" target="_blank">https://doi.org/10.1093/evlett/qrae029</a>
dc.identifier.otherCONVID_233315274
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/96628
dc.description.abstractDarwin and Bateman suggested that precopulatory sexual selection is more intense on males than females, and that this difference is due to anisogamy (i.e., dimorphism in gamete size and number). While a recent paper apparently presents empirical support for this hypothesis, another appears at first sight to present evidence against it. We argue that this is partly due to lack of transparent theoretical predictions, and discuss and analyze sexual selection theory in relation to anisogamy evolution. On one hand, we find that there exists relatively little theory that can directly address all the tested predictions; on the other, the picture painted by current theory indicates that both sets of empirical results broadly match predictions about the causal link between anisogamy and sexual selection, thus reconciling the two apparently opposing claims. We also discuss in a very broad, general sense how anisogamy is expected to affect sexual selection. One hundred and fifty years ago Darwin proposed that sexual selection, with rather rare exceptions, is more intense on males than females, typically causing males to be the sex that competes more intensely for matings. Defining males and females by anisogamy, that is, sperm and ova, an influential paper has shown Darwin's prediction to be true. However, a more recent paper on the same theme has shown that the degree of anisogamy fails to correlate with the intensity of sexual selection, casting doubt that anisogamy is responsible for the prevalence of male competitiveness for matings. Although at first sight this result seems to contradict long-standing theory, by analyzing existing theory we argue that in fact both findings are entirely compatible with theoretical expectations: while anisogamy is predicted to establish a general binary trend toward higher sexual selection intensity on males, the degree of anisogamy (across the typical range, where sperm vastly outnumber ova) is not predicted to be correlated with sexual selection intensity. Rather, though anisogamy should set a binary trend as Darwin predicted, the degree of anisogamy and variation in the intensity of sexual selection will be established by ecological, social, and other factors relevant to each taxon.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherOxford University Press
dc.relation.ispartofseriesEvolution Letters
dc.rightsCC BY 4.0
dc.subject.otheranisogamy
dc.subject.otherbehavior
dc.subject.othersexual selection
dc.subject.othertheory
dc.titleThe correlation between anisogamy and sexual selection intensity : the broad theoretical predictions
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202408155512
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Environmental Scienceen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn2056-3744
dc.relation.volumeEarly online
dc.type.versionpublishedVersion
dc.rights.copyright© 2024 the Authors
dc.rights.accesslevelopenAccessfi
dc.relation.grantnumber340130
dc.subject.ysosukusolut
dc.subject.ysoseksuaalivalinta
dc.subject.ysoevoluutiobiologia
dc.subject.ysolisääntyminen
dc.subject.ysosukupuolierot
dc.subject.ysoevoluutioteoria
dc.subject.ysoteoreettinen tutkimus
dc.subject.ysoevoluutioekologia
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p1492
jyx.subject.urihttp://www.yso.fi/onto/yso/p14268
jyx.subject.urihttp://www.yso.fi/onto/yso/p21944
jyx.subject.urihttp://www.yso.fi/onto/yso/p5683
jyx.subject.urihttp://www.yso.fi/onto/yso/p5290
jyx.subject.urihttp://www.yso.fi/onto/yso/p21943
jyx.subject.urihttp://www.yso.fi/onto/yso/p16390
jyx.subject.urihttp://www.yso.fi/onto/yso/p16528
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1093/evlett/qrae029
dc.relation.funderResearch Council of Finlanden
dc.relation.funderSuomen Akatemiafi
jyx.fundingprogramAcademy Research Fellow, AoFen
jyx.fundingprogramAkatemiatutkija, SAfi
jyx.fundinginformationThis research was funded by an Academy of Finland grant (340130) awarded to J.L.
dc.type.okmA1


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