As the weather has been getting warmer in Nova Scotia, many residents are noticing a higher presence of blackflies compared to previous years. However, there may be a positive side to this increase.
Andrew Hebda, a former zoology curator at the Nova Scotia Museum, explained to CBC’s Information Morning Halifax that blackflies are usually inactive during colder periods and winter, only becoming active in spring when the temperature rises – a process that is happening rapidly this season.
Hebda mentioned that if the warm weather persists for 10 days to two weeks, most blackflies will have emerged, reproduced, and then disappeared for the summer since they only have one generation per year. Unlike mosquitoes, which can have multiple generations in a season, blackflies do not reappear until the following year after reproducing and dying off.
Blackflies are more prevalent in moist and warm summers, while mosquitoes thrive in such conditions. Hebda noted that last year’s dry weather somewhat suppressed blackfly populations despite the higher temperatures.
To avoid blackflies, it is recommended to steer clear of tall grass and wooded areas. For mosquitoes, staying in open spaces with strong winds is advisable. Using bug sprays to mask scent or wearing bug jackets can also help create a barrier between individuals and insects.