The role of cephalopods in the Canadian Arctic – an examination of their distribution, biogeography and trophic interactions within the Canadian eastern Arctic

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dc.contributor.authorGardiner, Kathleen
dc.contributor.examiningcommitteeDocker, Margaret (Biological Sciences) Baydack, Rick (Environment and Geography) Fisk, Aaron (University of Windsor)en_US
dc.contributor.supervisorDick, Terry A. (Biological Sciences)en_US
dc.date.accessioned2015-09-10T21:39:49Z
dc.date.available2015-09-10T21:39:49Z
dc.date.issued2010en_US
dc.date.issued2010en_US
dc.degree.disciplineBiological Sciencesen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractThis thesis establishes baseline information on the distribution, biogeographical variability, habitat preference and trophic interactions for the most common Canadian Arctic cephalopod species: Gonatus fabricii, Rossia moelleri, R. palpebrosa, Bathypolypus species complex and Cirroteuthis muelleri. Records of Arctic cephalopods and their predators were compiled and areas of interest within the Canadian Arctic were identified. Morphometric analyses of G. fabricii and R. palpebrosa identified potential populations and described the key morphometric characters associated with each population. G. fabricii separated into four groupings: Hudson Strait, Ungava Bay, Baffin Bay/Greenland and Disko Bay, while St. Lawrence R. palpebrosa were distinguishable from Arctic samples. Principal component analysis (PCA) was the preferable multivariate method for population analyses. Stable isotope analyses of δ13C identified cephalopod habitat preferences and potential ontogenetic habitat shifts while stomach content analyses, δ15N values and mixing models provided trophic information, including the first descriptions of R. palpebrosa and C. muelleri prey items.en_US
dc.description.noteOctober 2015en_US
dc.identifier.citationGardiner, K. and T. A. Dick. 2010. Arctic cephalopod distributions and their associated predators. Polar Research. 29(2): 209-227.en_US
dc.identifier.citationGardiner, K. and T.A. Dick. 2010. A concentration of large forms of five common cephalopods from the Canadian Arctic. Marine Biodiversity Records. 3(e37): 1-6.en_US
dc.identifier.urihttp://hdl.handle.net/1993/30747
dc.language.isoengen_US
dc.publisherCo-action Publishingen_US
dc.publisherCambridge University Pressen_US
dc.rightsopen accessen_US
dc.subjectCephalopoden_US
dc.subjectArcticen_US
dc.subjectDistributionen_US
dc.subjectPopulationen_US
dc.subjectTrophic analysisen_US
dc.subjectGonatus fabriciien_US
dc.subjectRossia palpebrosaen_US
dc.subjectBathypolypusen_US
dc.subjectCirroteuthis muellerien_US
dc.titleThe role of cephalopods in the Canadian Arctic – an examination of their distribution, biogeography and trophic interactions within the Canadian eastern Arcticen_US
dc.typemaster thesisen_US
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