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Anadromy versus non-anadromy in the Canadian Arctic: variation in the lake ecology and life history of two allopatric Arctic charr (Salvelinus alpinus) populations in Cumberland Sound on South Baffin Island, Nunavut

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dc.contributor.supervisor Tallman, Ross (Biological Sciences) en_US
dc.contributor.author Young, Angela
dc.date.accessioned 2019-01-09T18:45:36Z
dc.date.available 2019-01-09T18:45:36Z
dc.date.issued 2019-02 en_US
dc.date.submitted 2019-01-03T18:06:38Z en
dc.identifier.uri http://hdl.handle.net/1993/33682
dc.description.abstract The lake ecology of Arctic charr in the Canadian Arctic is poorly defined. This research examined and compared the lake ecology and biological parameters of two differing charr populations (anadromous and landlocked) in Cumberland Sound, Nunavut. Growth differed between the populations, with anadromous charr being larger and having higher overall growth rates. Stomach contents indicated that landlocked charr feed in both fall and winter while anadromous charr did not feed within freshwater. Two discrete size at age classes were detected within the anadromous population, suggesting that significant morphological changes occur following first migration. Three discrete size at age classes were detected within the landlocked population indicative of ontogenetic shifts in diet from invertebrate feeding to piscivory. Littoral habitat was found to be important to all sizes of landlocked charr in both seasons, whereas the littoral habitat was only important for small fish in the winter within the anadromous population. en_US
dc.rights info:eu-repo/semantics/openAccess
dc.subject Arctic charr en_US
dc.subject Salvelinus alpinus en_US
dc.subject lake ecology en_US
dc.subject morphoplogy en_US
dc.subject diet en_US
dc.subject growth en_US
dc.subject life history en_US
dc.subject anadromy en_US
dc.subject landlocked en_US
dc.title Anadromy versus non-anadromy in the Canadian Arctic: variation in the lake ecology and life history of two allopatric Arctic charr (Salvelinus alpinus) populations in Cumberland Sound on South Baffin Island, Nunavut en_US
dc.type info:eu-repo/semantics/masterThesis
dc.type master thesis en_US
dc.degree.discipline Biological Sciences en_US
dc.contributor.examiningcommittee Darren Gillis (Biological Science) Gail Davoren (Biological Science) Mark Hanson (Environment and Geography) en_US
dc.contributor.examiningcommittee Davoren, Gail (Biological Science) Hanson, Mark (Environment and Geography) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note February 2019 en_US
dc.contributor.guestmembers Gillis, Darren (Biological Science) en_US


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