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dc.contributor.advisorCocroft, Reginald B. (Reginald Bifield), 1960-eng
dc.contributor.authorRamaswamy, Karthik, 1975-eng
dc.date.issued2010eng
dc.date.submitted2010 Springeng
dc.descriptionThe entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract, appears in the public.pdf file.eng
dc.descriptionTitle from PDF of title page (University of Missouri--Columbia, viewed on Sept. 7, 2010).eng
dc.descriptionThesis advisor: Dr. Reginald Cocroft.eng
dc.descriptionVita.eng
dc.descriptionPh. D. University of Missouri--Columbia 2010.eng
dc.description.abstract[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] I investigated the properties of collective behavior in a group-living insect, including the patterns of group behavior, the function of group level patterns, and how collective behavior emerges from individual actions. In the treehopper Umbonia crassicornis, offspring live in cylindrical aggregations along a host plant stem. In the presence of a predator, offspring produce synchronized vibrational signals that elicit maternal defense.The mother must approach the predator to defend her offspring, and I found that the collective signals reveal not only the predator's presence, but also its location. I then demonstrated experimentally that defending mothers use information in offspring signals to locate the predator. Finally, I and my collaborators developed an individual-based model of collective antipredator signaling. In the model, individuals contacted by the predator initiate signaling, while other individuals use both local cues (from immediate neighbors) and global cues (from all other group members) to decide whether and when to signal. The model results closely match multiple system-level patterns of offspring communicative networks, and provide insight into the mechanisms by which offspring groups can effectively increase the perceptual range of the defending mother.eng
dc.description.bibrefIncludes bibliographical referenceseng
dc.format.extentnulleng
dc.identifier.merlinb77890474eng
dc.identifier.oclc662494464eng
dc.identifier.urihttps://hdl.handle.net/10355/8444
dc.identifier.urihttps://doi.org/10.32469/10355/8444eng
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcommunityUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.rightsAccess is limited to the campuses of the University of Missouri.eng
dc.rights.licenseThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
dc.subject.lcshTreehoppers -- Reproductioneng
dc.subject.lcshInsects -- Behavioreng
dc.subject.lcshInsects -- Infancyeng
dc.subject.lcshInsects -- Host plantseng
dc.subject.lcshInsect soundseng
dc.titleCollective offspring-parent signaling in a social treehopper : mechanisms, patterns and functioneng
dc.typeThesiseng
thesis.degree.disciplineBiological sciences (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelDoctoraleng
thesis.degree.namePh. D.eng


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