Environmental Entomology (2008) 37, 907-913

Favio Corlay and Guy Boivin (2008)
Seasonal development of an invasive exotic species, Contarinia nasturtii (Diptera: Cecidomyiidae), in Quebec
Environmental Entomology 37 (4), 907-913
Abstract: The seasonal development of the swede midge Contarinia nasturtii Kieffer was studied in Quebec in 2004 and 2005 using pheromone traps, emergence cages, and visual inspection in relation to degree-day accumulations (DD_7.2°C). Peak emergence of overwintering adults occurred between 344 and 731 DD_7.2°C (second half of June) during both seasons. The swede midge had three to four overlapping generations in Quebec based on adult captures in pheromone traps and abundance of larvae in the field. The level of infestation was higher in late transplants than in early transplants, with cauliflower and broccoli being more susceptible to damage than white or red cabbage under high pest population.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Guy Boivin

Research topic(s) for pests/diseases/weeds:
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Contarinia nasturtii	Cabbage (Brassica oleracea)	Canada (east)