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City to brief public on gypsy moth spraying
A gypsy moth caterpillar eats a leaf on a tree. Large populations of gypsy moths can completely strip leaves from trees, which over time can eventually kill the tree or make it susceptible to other pests. (MEL EVANS / THE ASSOCIATED PRESS ARCHIVES)
Insect control officials will hold a public information session on plans to spray for gypsy moths in south Winnipeg.
Next Monday, the city and province will hold an information session at 7 p.m. at the Norberry-Glenlee Community Centre to unveil their plan to control a population of gypsy moths in select parts of St. Vital, including St. Vital Park.
Gypsy moths were accidentally introduced to the U.S. in 1869, and have spread throughout the northeastern U.S. to Quebec, Ontario and the Maritimes. The caterpillars feed on the leaves of more than 450 tree species, but prefer to eat oak trees. Large populations of gypsy moths can completely strip leaves from trees, which over time can eventually kill the tree or make it susceptible to other pests.
Insect control officials plan to apply the insecticide Foray 48B in parts of St. Vital. Its active ingredient is Btk, which is a bacterium found naturally in soils and has been used to control pest caterpillars since the mid-1970s.
Manitoba used Btk in 2009 to wipe out a population of European gypsy moths in La Salle and St. Germain. It was the first time Manitoba sprayed for the larvae after Canadian Food Inspection Agency traps turned up egg sacs.
Manitoba Conservation officials released a statement this afternoon that said there is potential for gypsy moths to spread throughout the province, which could lead to restrictions on forest product exports from affected areas.
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