Trent University Graduate Thesis Collection

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Identifier

tula:etd

Type

Collection

Language

eng

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1 item

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Displaying 1 - 2 of 2

Constraints on phenotypic plasticity in response to predation risk: Carryover effects, maternal investment, and the starvation-predation risk trade-off

Year: 2014, 2014

Member of: Trent University Graduate Thesis Collection

Name(s): Creator (cre): Bennett, Amanda Maria, Thesis advisor (ths): Murray, Dennis L, Degree committee member (dgc): Burness, Gary, Degree committee member (dgc): Kerr, Leslie, Degree committee member (dgc): Ridgway, Mark, Degree granting institution (dgg): Trent University

Abstract: <p>Inducible defenses are plastic responses by an organism to the perception of predation risk. This dissertation focuses on three experiments designed to test the hypothesis that plastic ability is limited by energetic constraints. Chapter 1 provides a general introduction to phenotypic plasticity research and the theoretical costs and limitations affecting the expression of plastic traits… more

Widespread changes in growth, diet and depth distribution of lake whitefish (Coregonus clupeaformis) in the Great Lakes are linked to invasive dreissenid mussels

Year: 2014, 2014

Member of: Trent University Graduate Thesis Collection

Name(s): Creator (cre): Fera, Shannon A., Thesis advisor (ths): Dunlop, Erin, Thesis advisor (ths): Ridgway, Mark, Degree committee member (dgc): Dillon, Peter, Degree granting institution (dgg): Trent University

Abstract: <p>Recent declines in growth and condition of Great Lakes' lake whitefish (Coregonus clupeaformis) have been linked to ecosystem-wide changes stemming from the invasion of dreissenid mussels. To test the influence of invasive mussels on this commercially important coregonid species, we collected archived scale samples from ten Great Lake locations and analyzed long-term changes in… more