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ECOLOGICAL SPECIATION OF A LANDLOCKED POPULATION OF RAINBOW SMELT (Osmerus mordax) IN LOCHABER LAKE, NOVA SCOTIA

dc.contributor.authorRivard, Julie
dc.contributor.copyright-releaseNot Applicableen_US
dc.contributor.degreeMaster of Scienceen_US
dc.contributor.departmentDepartment of Biologyen_US
dc.contributor.ethics-approvalNot Applicableen_US
dc.contributor.external-examinern/aen_US
dc.contributor.graduate-coordinatorSophia Stoneen_US
dc.contributor.manuscriptsNot Applicableen_US
dc.contributor.thesis-readerIan Bradburyen_US
dc.contributor.thesis-readerRod Bradforden_US
dc.contributor.thesis-readerDaniel Ruzzanteen_US
dc.contributor.thesis-supervisorPaul Bentzenen_US
dc.date.accessioned2016-08-12T13:21:54Z
dc.date.available2016-08-12T13:21:54Z
dc.date.defence2016-06-30
dc.date.issued2016-08-12T13:21:54Z
dc.description.abstractThe process of speciation still remains one of the most debated issues in evolutionary biology. Studying sympatrically speciated pairs of fish, found in post-glacial lakes, may provide a unique insight into speciation, as populations are recently diverged. A landlocked sympatric pair of Rainbow Smelt (Osmerus mordax) found in Lochaber Lake, Nova Scotia is diverged into a small microphagous form and a large macrophagous form. Both forms have phenotypic differences associated with different trophic niches. Besides being phenotypically diverged they are also genetically differentiated suggesting reproductive isolation that is stable over time; however, results from this study provide evidence for gene flow between the two morphs. Hybrids were also observed in the adult and the larval Rainbow smelt providing further evidence that gene flow between the two morphs does exist, despite being selected against.en_US
dc.identifier.urihttp://hdl.handle.net/10222/72058
dc.language.isoenen_US
dc.subjectecological spectiationen_US
dc.subjectRainbow smelten_US
dc.subjectlandlocken_US
dc.subjectLochaber Lake (N.S.)en_US
dc.titleECOLOGICAL SPECIATION OF A LANDLOCKED POPULATION OF RAINBOW SMELT (Osmerus mordax) IN LOCHABER LAKE, NOVA SCOTIAen_US

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