Agent-based scenario models of invasion and movement of rhagoletis pomonella (diptera: tephritidae) within the southern interior of British Columbia
department or school: Arts and Sciences, Irving K. Barber School of (Okanagan)
department or school: Biology, Department of (Okanagan)
data provider: DSpace
degree campus: UBCO
creator: Muselle, Brian Thayer
issued: 2019-04-08T16:29:03Z
issued: 2019
related degree: Master of Science - MSc
degree grantor: University of British Columbia
description: The apple maggot, Rhagoletis pomonella, is an economically important native pest of pome fruits in the US and Canada. BCâs Okanagan Valley is currently the only significant commercial apple-producing region in North America that remains free of its impact. This is likely to change soon, as R. pomonella is well established within certain counties in adjacent Washington State. Extensive sampling and control efforts have been undertaken since the pestâs arrival in Washington in the late 1970s. Data from American agencies provided a foundation for spatially explicit agent-based models (ABM), which I developed and used to evaluate fly movement and establishment under different management scenarios within comparable regions in the Okanagan. ABMs enable simultaneous manipulation of agent behaviour (here, insect dispersal and human management practices) and other factors within a spatially explicit landscape context, in ways that would otherwise be infeasible to explore in the field. My objective was to use ABM simulations and their outcomes to inform future management and survey efforts in advance of R. pomonella establishing in the Okanagan. I first constructed a validation model situated in Washington State landscapes, informed by historical data from state agencies, and then a predictive model for Okanagan landscapes where R. pomonella has yet to establish. Using ABMs to simulate pest invasion in a new area is, to my knowledge, novel. I calibrated my model parameters using information from the literature and data describing historical spread in Washington. The Washington-based validation model yielded a 52.8 â 82.0% agreement for the locations of apple maggot infestation and a 52.1 â 81.9% agreement for the locations of apple maggot infestation severity. The predictive simulations within Okanagan landscapes yielded maps expressing risk of infestation under various management and spread scenarios. They showed the most important management strategy for reducing apple magg…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/69514
note: Agent-based scenario models of invasion and movement of Rhagoletis pomonella (Diptera: Tephritidae) within the southern interior of British Columbia by Brian Thayer Muselle B.Sc. [Hons], The University of British Columbia Okanagan, 2015 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE in The College of Graduate Studies (Biology) THE UNIVERSITY OF BRITISH COLUMBIA (Okanagan) April 2019 © Brian Thayer Muselle, 2019 ii The following individuals certify that they have read, and recommend to the College of Graduate Studies for acceptance, a thesis/dissertation entitled: Agent-based scenario models of invasion and movement of Rhagoletis pomonella (Diptera: Tephritidae) within the southern interior of British Columbia submitted by Brian Thayer Muselle in partial fulfillment of the requirements of the degree of Master of Science . Dr. Jason Pither, Biology Department, Irving K. Barber School of Arts and Sciences Co-Supervisor Dr. Howard Thistlewood, Agriculture & Agri-Food Canada Co-Supervisor Dr. Lael Parrott, Biology Department, Irving K. Barber School of Arts and Sciences Supervisory Committee Member Dr. Robert Lalonde, Biology Department, Irving K. Barber School of Arts and Sciences Supervisory Committee Member Dr. Sylvie Desjardins, Department of Computer Science, Mathematics, Physics and Statistics, Irving K. Barber School of Arts and Sciences University Examiner iii Abstract The apple maggot, Rhagoletis pomonella, is an economically important native pest of pome fruits in the US and Canada. BCâs Okanagan Valley is currently the only significant commercial apple-producing region in North America that remains free of its impact. This is likely to change soon, as R. pomonella is well established within certain counties in adjacent Washington State. Extensive sampling and control efforts have been undertaken since the pestâs arrival in Washington in the late 1970s. Data from American agencies provided a foundation for spa…
has type: Thesis/Dissertation
date issued: 2019-05
is shown at: 10.14288/1.0378023
language: eng
degree discipline: Biology
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/69514