First record of <em>Drosophila suzukii</em> in Quebec vineyards
2013
Julien Saguez | Jacques Lasnier | Charles Vincent
Aim: Surveys conducted between July and September 2012 in Quebec vineyards revealed the presence of the spotted wing drosophila (SWD), Drosophila suzukii Matsumura, just before harvest. Methods and results: Red and white grapevine cultivars from four vineyards were surveyed for leafhoppers by using a tapping method. Unexpectedly, a total of 30 SWD adults were collected from red grapevine cultivars, i. e., Marechal Foch, Gamay and Seyval Noir. Furthermore, a total of 101 SWD emerged from bunches selected in these vineyards and placed under laboratory conditions. No SWD were found in white cultivars. Conclusion: This is the first mention of SWD in grapevines grown for wine in Quebec. Significance and impact of the study: Spreading of SDW across Quebec vineyards may lead to important yield losses. Insecticide treatments need to be adapted to address this new entomological challenge.
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