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dc.contributor.authorSaragusty, J
dc.contributor.authorHermes, R
dc.contributor.authorHofer, H
dc.contributor.authorBouts, T
dc.contributor.authorGoeritz, F
dc.contributor.authorHildebrandt, TB
dc.date.accessioned2020-12-21T02:40:50Z
dc.date.available2020-12-21T02:40:50Z
dc.date.issued2012-02-01
dc.identifierpii: ncomms1700
dc.identifier.citationSaragusty, J., Hermes, R., Hofer, H., Bouts, T., Goeritz, F. & Hildebrandt, T. B. (2012). Male pygmy hippopotamus influence offspring sex ratio. NATURE COMMUNICATIONS, 3 (1), https://doi.org/10.1038/ncomms1700.
dc.identifier.issn2041-1723
dc.identifier.urihttp://hdl.handle.net/11343/257025
dc.description.abstractPre-determining fetal sex is against the random and equal opportunity that both conceptus sexes have by nature. Yet, under a wide variety of circumstances, populations shift their birth sex ratio from the expected unity. Here we show, using fluorescence in situ hybridization, that in a population of pygmy hippopotamus (Choeropsis liberiensis) with 42.5% male offspring, males bias the ratio of X- and Y-chromosome-bearing spermatozoa in their ejaculates, resulting in a 0.4337±0.0094 (mean±s.d.) proportion of Y-chromosome-bearing spermatozoa. Three alternative hypotheses for the shifted population sex ratio were compared: female counteract male, female indifferent, or male and female in agreement. We conclude that there appears little or no antagonistic sexual conflict, unexpected by prevailing theories. Our results indicate that males possess a mechanism to adjust the ratio of X- and Y-chromosome-bearing spermatozoa in the ejaculate, thereby substantially expanding currently known male options in sexual conflict.
dc.languageEnglish
dc.publisherNATURE PUBLISHING GROUP
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0
dc.titleMale pygmy hippopotamus influence offspring sex ratio
dc.typeJournal Article
dc.identifier.doi10.1038/ncomms1700
melbourne.affiliation.departmentSchool of BioSciences
melbourne.source.titleNature Communications
melbourne.source.volume3
melbourne.source.issue1
dc.rights.licenseCC BY-NC-ND
melbourne.elementsid1237561
melbourne.contributor.authorHildebrandt, Thomas
dc.identifier.eissn2041-1723
melbourne.accessrightsOpen Access


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