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dc.contributor.advisorGleason, Jennifer
dc.contributor.advisorGreenfield, Michael
dc.contributor.authorMiller, Ginger
dc.date.accessioned2011-06-21T15:45:04Z
dc.date.available2011-06-21T15:45:04Z
dc.date.issued2010-12-06
dc.date.submitted2010
dc.identifier.otherhttp://dissertations.umi.com/ku:11222
dc.identifier.urihttp://hdl.handle.net/1808/7621
dc.description.abstractI investigated the role of male calling song and female preference on mate choice and pre-mating isolation in Orchelimum nigripes and O. pulchellum. In Chapter 1, I show that the calls of O. nigripes and O. pulchellum differ significantly in multiple temporal characteristics. Given that male signals are different, I next determined whether or not there was species discrimination by females in caged mating trials. In chapter 2, I show female O. nigripes mated preferentially with O. nigripes while O. pulchellum females mated with both O. nigripes and O. pulchellum males. To isolate the acoustic preference of females for male song from other signals and exchanges, I tested female song preference on a walking compensator (a "servosphere") with playback of male song. In chapter 3, I demonstrate that female preference in both species is more complex than a simple preference for increased call energy, and that females of both species will orient to male songs of either species. Katydids from within the hybrid zone were characterized in two ways, song (Chapter 1) and mitochondrial DNA (mtDNA, Chapter 2). Songs from hybrid populations collected within the zone differed in temporal patterning from songs of allopatric Orchelimum nigripes and O. pulchellum, and were less variable than songs of allopatrics. Individuals collected across the hybrid zone primarily carried O. pulchellum mtDNA. This is consistent with the hypothesis that the southeastern hybrid zone was formed by crosses between O. pulchellum females and O. nigripes males, and is also consistent with the results of the caged mating trials in Chapter 2.
dc.format.extent115 pages
dc.language.isoen
dc.publisherUniversity of Kansas
dc.rightsThis item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
dc.subjectBehavioral sciences
dc.subjectEvolution & development
dc.subjectEntomology
dc.subjectHybrid zone
dc.subjectMate choice
dc.subjectOrthoptera
dc.subjectSpeciation
dc.subjectTettigoniidae
dc.titlePRE-MATING COMMUNICATION AND HYBRIDIZATION BETWEEN TWO MEADOW KATYDIDS, ORCHELIMUM NIGRIPES AND O. PULCHELLUM (ORTHOPTERA: TETTIGONIIDAE): MALE CALLING SONG AND ASYMMETRIC FEMALE PREFERENCE
dc.typeDissertation
dc.contributor.cmtememberEngel, Michael
dc.contributor.cmtememberSmith, Deborah
dc.contributor.cmtememberHawley, Patricia
dc.thesis.degreeDisciplineEcology & Evolutionary Biology
dc.thesis.degreeLevelPh.D.
kusw.oastatusna
kusw.oapolicyThis item does not meet KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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