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dc.contributor.authorLoureiro, Alexandre
dc.date.accessioned2018-08-31T15:31:47Z
dc.date.available2018-08-31T15:31:47Z
dc.identifier.urihttp://hdl.handle.net/10222/74193
dc.description.abstractCarabidae can be important pest control agents in many agricultural systems, and research on lowbush blueberry carabid communities is underdeveloped. In laboratory no-choice test experiments, I showed that Pterostichus mutus (Say) and Poecilus lucublandus (Say) did not feed on weed seeds commonly found in lowbush blueberry fields. I also did two field experiments that explored different aspects of Carabidae ecology. In the first, I measured the diversity and abundance of Carabidae in lowbush blueberry fields with respect to time and distance from field edge by setting up traps in a straight line from the surrounding forest edge to the center of 6 vegetative fields. I showed that carabid diversity did not change with distance from field edge over this summer season, but abundance increased linearly. In the second, I investigated Harpalus rufipes (De Geer) dispersal by measuring how far individuals may move over time by setting up a series of concentric circles and releasing marked individuals in the center. I developed a theoretical framework that estimates how many marked individuals are in the area based on number of beetles detected and probability of detection. I found that H. rufipes moved on average 5.38 (95% CI = 2.46 to 8.30), 14.47 (95% CI = 8.57 to 20.37), and 20.73 (95% CI = 8.98 to 32.48) m at 5, 29, and 53 hours respectively. These values are relatively close to that of other Carabidae and give us insight on how fast the population of H. rufipes may disperse in vegetative lowbush blueberry fields. The theoretical framework I developed provides methodological refinements for Carabidae dispersal research.en_US
dc.language.isoenen_US
dc.subjectCarabidaeen_US
dc.subjectLowbush blueberryen_US
dc.subjectDiversityen_US
dc.subjectInsect Movementen_US
dc.subjectWeed seedsen_US
dc.subjectCommunity ecologyen_US
dc.subjectBlueberries
dc.titleFEEDING BEHAVIOUR, DISPERSAL, AND COMMUNITY DYNAMICS OF CARABIDAE FOUND IN NOVA SCOTIA LOWBUSH BLUEBERRY FIELDSen_US
dc.date.defence2018-08-28
dc.contributor.departmentFaculty of Agricultureen_US
dc.contributor.degreeMaster of Scienceen_US
dc.contributor.external-examinern/aen_US
dc.contributor.graduate-coordinatorGordon Priceen_US
dc.contributor.thesis-readerVilis O. Namsen_US
dc.contributor.thesis-readerScott N. Whiteen_US
dc.contributor.thesis-supervisorG. Christopher Cutleren_US
dc.contributor.ethics-approvalNot Applicableen_US
dc.contributor.manuscriptsNot Applicableen_US
dc.contributor.copyright-releaseNot Applicableen_US
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