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Low trap numbers mean no fogging for mosquitoes
A mosquito.
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There's no mosquito fogging in store for Winnipeg any time soon, as trap counts remain low across the city.
Winnipeg's insect control branch has been successful in its efforts to apply larvicides to bodies of standing water in and around the city, said Taz Stuart, the city's entomologist.
He also thanked residents for eliminating standing water on their own properties and encouraged them to continue to do so in an effort to prevent mosquito larvae from developing into adults.
Earlier this year, following major spring rains, Stuart said there was a potential for a "major emergence" of mosquitoes this summer.
But the combination of larviciding efforts and heat - adult mosquitoes tend to hide from direct sun - has reduced that potential, Stuart said.
The city has also started applying permethrin, a pesticide, to foliage in parks and wooded areas, he said.
"There's only an expectation of a small emergence over the next seven to 14 days," Stuart said.
Areas outside of Winnipeg, where there are no larviciding programs, have more mosquitoes, he said.
The average trap count in Winnipeg right now is eight. Trap counts need to exceed 25 for two consecutive nights - and one quadrant of the city has to exceed 100 - before nuisance fogging for mosquitoes can commence.
Right now, the mosquitoes emerging in Winnipeg are both nuisance species and the variety that can carry disease, but the latter is emerging in small numbers and there is no threat of West Nile virus as of yet.
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