The Role of Host Demographic Storage in the Ecological Dynamics of Heritable Symbionts

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dc.citation.firstpage446en_US
dc.citation.issueNumber4en_US
dc.citation.journalTitleThe American Naturalisten_US
dc.citation.lastpage459en_US
dc.citation.volumeNumber188en_US
dc.contributor.authorBibian, Andrew J.en_US
dc.contributor.authorRudgers, Jennifer A.en_US
dc.contributor.authorMiller, Tom E.X.en_US
dc.date.accessioned2017-05-19T19:09:40Zen_US
dc.date.available2017-05-19T19:09:40Zen_US
dc.date.issued2016en_US
dc.description.abstractHeritable symbioses are widespread and ecologically important. Many host organisms have complex life cycles that include diverse opportunities for symbionts to affect their host and be lost during development. Yet, existing theory takes a simplified view of host demography. Here, we generalize symbiosis theory to understand how demographic “storage” in the form of dormant or prereproductive life stages can modify symbiosis dynamics. Using grass-endophyte symbioses as context, we developed models to contrast the role of the seed bank (a storage stage) against the reproductive stage in symbiont persistence and prevalence. We find that the seed bank is as important as or more important than the reproductive stage in driving symbiont dynamics, as long as passage through the seed bank is obligate. Flexible entry to the seed bank substantially weakens its influence on symbiont persistence but can modify prevalence in counterintuitive ways. Our models identify a role for legacy effects, where hosts that lose symbionts retain their demographic influence. The retention of benefits via legacy effects can reduce symbiont prevalence and even cause prevalence to decline with increasing benefits to hosts because symbiont-free hosts carry those benefits. Our results resolve connections between individual-level host-symbiont interactions and population-level patterns, providing guidance for empirical studies.en_US
dc.identifier.citationBibian, Andrew J., Rudgers, Jennifer A. and Miller, Tom E.X.. "The Role of Host Demographic Storage in the Ecological Dynamics of Heritable Symbionts." <i>The American Naturalist,</i> 188, no. 4 (2016) The University of Chicago Press: 446-459. https://doi.org/10.1086/687965.en_US
dc.identifier.doihttps://doi.org/10.1086/687965en_US
dc.identifier.urihttps://hdl.handle.net/1911/94301en_US
dc.language.isoengen_US
dc.publisherThe University of Chicago Pressen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.subject.keywordhost-symbiont dynamicsen_US
dc.subject.keyworddemographic modelingen_US
dc.subject.keywordstage-structured populationsen_US
dc.subject.keywordmutualismen_US
dc.subject.keywordEpichloëen_US
dc.subject.keywordfungal endophyteen_US
dc.titleThe Role of Host Demographic Storage in the Ecological Dynamics of Heritable Symbiontsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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