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dc.contributor.authorMiller, Tom E. X.  Concept link
dc.contributor.authorShaw, Allison K.  Concept link
dc.contributor.authorInouye, Brian D.  Concept link
dc.contributor.authorNeubert, Michael G.  Concept link
dc.date.accessioned2011-05-23T20:37:09Z
dc.date.available2012-04-07T08:33:13Z
dc.date.issued2011-04-07
dc.identifier.citationAmerican Naturalist 177 (2011): 549-561en_US
dc.identifier.urihttps://hdl.handle.net/1912/4617
dc.descriptionAuthor Posting. © University of Chicago, 2011. This article is posted here by permission of University of Chicago for personal use, not for redistribution. The definitive version was published in American Naturalist 177 (2011): 549-561, doi:10.1086/659628.en_US
dc.description.abstractPopulation models that combine demography and dispersal are important tools for forecasting the spatial spread of biological invasions. Current models describe the dynamics of only one sex (typically females). Such models cannot account for the sex-related biases in dispersal and mating behavior that are typical of many animal species. In this article, we construct a two-sex integrodifference equation model that overcomes these limitations. We derive an explicit formula for the invasion speed from the model and use it to show that sex-biased dispersal may significantly increase or decrease the invasion speed by skewing the operational sex ratio at the invasion’s low-density leading edge. Which of these possible outcomes occurs depends sensitively on complex interactions among the direction of dispersal bias, the magnitude of bias, and the relative contributions of females and males to local population growth.en_US
dc.description.sponsorshipThis work was supported in part by a Woods Hole Oceanographic Institution Summer Student Fellowship and a National Science Foundation (NSF) Graduate Research Fellowship to A.K.S., USDA grants to T.E.X.M. (CSREES-2007–02270), and NSF grants to M.G.N. (DEB-0235692) and to B.D.I. (DEB-0816838). T.E.X.M. was also supported by the Rice University Huxley Fellowship; M.G.N. also acknowledges support fromthe AndrewW. Mellon Foundation Endowed Fund for Innovative Research.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherUniversity of Chicagoen_US
dc.relation.urihttps://doi.org/10.1086/659628
dc.subjectIntegrodifference equationsen_US
dc.subjectInvasion speeden_US
dc.subjectMating functionsen_US
dc.subjectMarriage squeezeen_US
dc.subjectSex-biased dispersalen_US
dc.subjectSpatial spreaden_US
dc.titleSex-biased dispersal and the speed of two-sex invasionsen_US
dc.typeArticleen_US
dc.identifier.doi10.1086/659628


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