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Distribution, Abundance, and Biological Control Potential of Synopeas myles, a Parasitoid of the Swede Midge

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dc.contributor.advisor Hallett, Rebecca Ferland, Charles-Étienne 2020-03-10T19:57:24Z 2020-03-10T19:57:24Z 2020-03-09 2020-02-03 2020-03-10
dc.description.abstract The swede midge, Contarinia nasturtii Kieffer (Diptera: Cecidomyiidae), is a major invasive pest of canola and other plants in the Brassicaceae family. Current pest management practices fail to ensure adequate crop protection. The parasitoid Synopeas myles Walker (Hymenoptera: Platygastridae), an adventively introduced natural enemy of C. nasturtii, was discovered in Ontario in 2016. The overall goal of this project was to quantify the potential of S. myles as a biological control candidate to use in an integrated pest management approach for C. nasturtii in Ontario, as well as to assess possible biological control practices to promote this parasitoid. Synopeas myles was found to be widespread across canola growing regions of Ontario, with parasitism rates close to 6% on average. Floral supplements showed promising potential to increase parasitoid longevity, but not fecundity. Parasitism rates were positively associated with percent managed surroundings and presence of wild flowers near field edges, and negatively associated with soil silt content and C. nasturtii population density.  en_US
dc.language.iso en en_US
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International *
dc.rights.uri *
dc.subject biological control en_US
dc.subject canola en_US
dc.subject brassica en_US
dc.subject contarinia nasturtii en_US
dc.subject parasitoid en_US
dc.subject platygastridae en_US
dc.subject swede midge en_US
dc.subject synopeas myles en_US
dc.title Distribution, Abundance, and Biological Control Potential of Synopeas myles, a Parasitoid of the Swede Midge en_US
dc.type Thesis en_US Environmental Sciences en_US Master of Science en_US
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Attribution-NonCommercial-NoDerivatives 4.0 International Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International