Impacts of Lake Physical Characteristics and the Presence of a Non-native Species on Diet Specialization in Threespine Stickleback (Gasterosteus aculeatus)

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dc.contributor.advisorVamosi, Steven M.
dc.contributor.advisorVamosi, Jana C.
dc.contributor.authorCurley, Douglas Taylor
dc.contributor.committeememberGalpern, Paul
dc.contributor.committeememberWasmuth, James D.
dc.date2018-11
dc.date.accessioned2018-10-02T18:28:44Z
dc.date.available2018-10-02T18:28:44Z
dc.date.issued2018-09-21
dc.description.abstractThe diet and dietary morphological adaptations of populations have been shown to be influenced by both the physical characteristics of their habitat and the presence of non-native species. In this study, I assessed how diet varies within and among populations of threespine stickleback (Gasterosteus aculeatus) in lakes with varying bathymetry in southwestern British Columbia. These lakes also differed in whether they contained the invasive signal crayfish (Pacifastacus leniusculus). Diet was evaluated through gut content analysis. I also investigated how morphology differs between these populations, as morphology has been shown to be linked to diet in stickleback. Diet data did not reveal any significant differences in diet among populations. However, morphology data did reveal significant differences among lakes and between crayfish conditions. The data suggest that diets higher in benthic invertebrates are associated with lakes with more littoral area and with the presence of signal crayfish.en_US
dc.identifier.citationCurley, D. T. (2018). Impacts of Lake Physical Characteristics and the Presence of a Non-native Species on Diet Specialization in Threespine Stickleback (Gasterosteus aculeatus) (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/33075en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/33075
dc.identifier.urihttp://hdl.handle.net/1880/108722
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.facultyScience
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectDiet
dc.subjectFreshwater ecosystems
dc.subjectFish
dc.subjectInvasive species
dc.subjectAdaptation
dc.subject.classificationEcologyen_US
dc.titleImpacts of Lake Physical Characteristics and the Presence of a Non-native Species on Diet Specialization in Threespine Stickleback (Gasterosteus aculeatus)
dc.typemaster thesis
thesis.degree.disciplineBiological Sciences
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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