2026-09-20T10:34:00.749953400Zhttps://opus.uleth.ca/server/oai/requestoai:opus.uleth.ca:10133/26182021-06-28T14:27:24Zcom_10133_3346com_10133_1com_10133_301com_10133_299com_10133_296col_10133_3347col_10133_3322col_10133_298
ULethbridge OPUS Repository
supervisor
De Clerck-Floate, Rosemarie
supervisor
Goater, Cameron P.
author
Barnewall, Emily C.
author
University of Lethbridge. Faculty of Arts and Science
2012-03-02T16:35:55Z
2012-03-02T16:35:55Z
2011
https://hdl.handle.net/10133/2618
Yellow toadflax, Linaria vulgaris (L.) Mill. (Plantaginaceae), is a non-native invasive plant. Rhinusa pilosa Germar (Coleoptera: Curculionidae) is a proposed biocontrol agent. Gall development by R. pilosa was described using histological methods and compared between plant populations from native and introduced ranges. Key stages of oviposition were isolated histologically to determine their importance in gall induction. Rhinusa pilosa galled and developed on four geographically distinct Canadian populations in a pre-release quarantine study. Low agent densities only negatively affected one population. High densities of R. pilosa reduced potential reproductive output and plant biomass. Conducting detailed investigations into the biology, impact, and development of R. pilosa on populations from invasive and native ranges may help predict the efficacy of R. pilosa in the field if approved for release and.goes beyond current pre-release testing requirements.
en_US
Linaria vulgaris -- Biological control -- Research
Biological pest control agents
Insects as biological pest control agents -- Research
Beetles -- Host plants
Weeds -- Biological control
Dissertations, Academic
Plant-insect interactions between yellow toadflax, Linaria vulgaris, and a potential biocontrol agent, the gall-forming weevil, Rhinusa pilosa
Thesis
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URL
http://localhost:4000/bitstreams/e78cb40e-0580-4471-9861-ffdcedee0283/download
File
MD5
ae62e14a20928007c425b83ab047f623
7216671
application/pdf
BARNEWALL_EMILY_MSC_2011.pdf
URL
http://localhost:4000/bitstreams/9257c93c-c39b-42fd-9016-4e9ef29e2529/download
File
MD5
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text/plain
BARNEWALL_EMILY_MSC_2011.pdf.txt