This summer, many prairie cities experienced a surge in mosquito populations, leading to shortages of bug spray in stores across Manitoba, Saskatchewan, and Alberta. Data from the City of Edmonton revealed a significant increase in mosquitoes, up 15 times in July compared to the previous year. While not record-breaking numbers, this spike contrasted with the past two summers, impacting public perception.

Saskatoon and Winnipeg also reported higher mosquito numbers in July compared to the previous year. In southern Ontario, experts attribute the prolonged mosquito season to the record rainfall witnessed this summer, creating ideal breeding conditions for mosquitoes like the Ochlerotatus trivittatus species.

Fiona Hunter, a professor at Brock University specializing in entomology, highlighted the abundance of Ochlerotatus trivittatus mosquitoes in southern Ontario this year due to the wet conditions. The species thrives in flooded areas, explaining the increased mosquito activity.

Experts predict a decline in mosquito populations as colder temperatures set in, causing mosquitoes to perish. The recent cold snap in Alberta has already led to a decrease in mosquito numbers. Despite a warm fall in Edmonton, mosquito populations are expected to dwindle as temperatures drop. However, a resurgence may occur with a forecasted return to warmer weather in the region, though not reaching the levels experienced in central Canada.