As temperatures rise across Nova Scotia, an increase in blackflies is being observed by many residents this year. However, there may be a positive side to this surge in blackfly activity.
According to Andrew Hebda, a former zoology curator at the Nova Scotia Museum, blackflies remain inactive during the winter and cold spells, only becoming active in the spring when temperatures warm up. Hebda noted that this season, they are emerging rapidly.
Hebda explained that if the current weather persists for 10 days to two weeks, the majority of blackflies will have emerged, reproduced, and then disappeared for the summer since they have only one generation annually. In contrast, mosquitoes can have up to six generations in a single season.
Last year’s dry conditions suppressed blackfly populations despite higher temperatures. Hebda advised avoiding tall grass and wooded areas to steer clear of blackflies. For mosquitoes, staying in open spaces with strong, steady winds is recommended. Additionally, using bug sprays or bug jackets can help mask scents or create a physical barrier against insects.
By understanding the behavior of these insects and taking preventive measures, Nova Scotians can better navigate the outdoor environment during the warmer months.