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The functions and mechanisms of predator-associated vocalisations in North American red squirrels (Tamiasciurus Hudsonicus)

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dc.contributor.advisor Rendall, Drew Digweed, Shannon Marie University of Lethbridge. Faculty of Arts and Science 2011-07-08T20:11:07Z 2011-07-08T20:11:07Z 2009
dc.description xi, 153 leaves : ill. ; 29 cm en_US
dc.description.abstract North American red squirrels are a solitary, territorial species that confront various predators. Previous research proposed that squirrels produce predator-specific, referential ‘seet’ and ‘bark’ alarm calls to aerial and ground predators, respectively. To test this hypothesis, I examined alarm call production during natural encounters with predators, conspecific intruders and in a series of predator simulation experiments. Call production patterns were consistent across all types of disturbance and involved protracted bouts where both call types were inter-mixed. Hence, the call types were not predator-specific but rather their patterning reflected the persistence of disturbances of any type. Tests of alternative call functions further indicated that calls were not actually directed at conspecifics, but rather at predators and intruders and might function to deter or repel them directly. These outcomes are consistent with life-history details of red squirrels and contradict the proposal that this species produces predator-specific, referential alarm calls. en_US
dc.language.iso en_US en_US
dc.publisher Lethbridge, Alta. : University of Lethbridge, Dept. of Psychology, c2009 en_US
dc.relation.ispartofseries Thesis (University of Lethbridge. Faculty of Arts and Science) en_US
dc.subject Tamiasciurus hudsonicus -- Vocalization en_US
dc.subject Sound production by animals en_US
dc.subject Dissertations, Academic en_US
dc.title The functions and mechanisms of predator-associated vocalisations in North American red squirrels (Tamiasciurus Hudsonicus) en_US
dc.type Thesis en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Psychology en_US Doctor of Philosophy PhD Psychology
dc.organization University of Lethbridge
dc.librarysymbol ALU Arts and Science Social Sciences

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