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dc.contributor.advisorGerhardt, H. Carleng
dc.contributor.authorGordon, Noah M., 1968-eng
dc.date.issued2008eng
dc.date.submitted2008 Falleng
dc.descriptionTitle from PDF of title page (University of Missouri--Columbia, viewed on Feb 25, 2010).eng
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.descriptionDissertation advisor: Dr. H. Carl Gerhardt.eng
dc.descriptionVita.eng
dc.descriptionPh. D. University of Missouri--Columbia 2008.eng
dc.description.abstractParticularly in organisms with a limited breeding period, females must rely on both external and physiological cues to regulate the phenology of reproduction and behavior. I investigated the relationship between male acoustic signals, and the endocrinology and behavior of females in the gray treefrog, Hyla versicolor. I found that wild female treefrogs show the greatest elevation of steroids on breeding nights, and non-breeding females had elevated levels of estradiol and testosterone during the breeding season relative to the non-breeding season. Injections of progesterone and prostaglandin elevated estradiol levels and promoted phonotaxis in a manner similar to naturally breeding females, suggesting these hormones may influence this reproductive behavior. Over the time scale of an entire breeding season, females that heard conspecific signals were not more likely to elevate reproductive steroids or to seek out or amplex calling males. On breeding nights, females that heard conspecific calls had elevated levels of estradiol and took longer to oviposit than control females. Females oviposited regardless of whether a male was present, however, postoviposition estradiol and testosterone levels were elevated only in the presence of an amplectant male. My findings suggest that male acoustic signals influenced female reproduction during breeding nights, but not over longer time scales.eng
dc.description.bibrefIncludes bibliographical referenceseng
dc.format.extentxiii, 122 pageseng
dc.identifier.oclc554743736eng
dc.identifier.urihttps://hdl.handle.net/10355/6613
dc.identifier.urihttps://doi.org/10.32469/10355/6613eng
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcommunityUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.rightsOpenAccess.eng
dc.rights.licenseThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
dc.sourceSubmitted by University of Missouri--Columbia Graduate School.eng
dc.subject.lcshHyla versicolor -- Vocalizationeng
dc.subject.lcshHyla versicolor -- Reproduction -- Endocrine aspectseng
dc.subject.lcshHyla versicolor -- Behavioreng
dc.subject.lcshAnimal communicationeng
dc.titleBehavioral endocrinology of female gray treefrogs, Hyla versicolor, in response to acoustic stimulationeng
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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