Gypsy Moth Trapping Results in 2010
Results of Canadian Food Inspection
Agency's and Ministry of Forests and Range's Annual Monitoring Program

In the summer of 2010, 12 male moths were caught in 9 pheromone traps at 8 locations listed below:

BC Interior: Nelson (2), Revelstoke (2)  (total = 4 moths in 3 traps at 3 locations)

Lower Mainland/Fraser Valley: (total = 4 moths in 4 traps at 4 locations)
Harrison Hot Springs (1 dt), N  Vancouver (2), Port Moody (1)

Vancouver Island: (total = 4 moths in 2 traps at 1 locations)
Comox (4 dt)


Normal monitoring grids are at a density of 1 trap/sq. mi.  If positive traps are found in this grid, the following year's trapping density is increased to a delimiting trap density at 16 traps/sq. mi. (dt = denotes delimiting trap density).

 

Comox Trap Catch North Shore Trap Catches Harrision Trap Catch Revelstoke trap catches Neslon Area trap catches 2010 gypsy moth positive trap locations

Positive Trap Catches in 2010 - Click on the individual maps for a larger image.

Use this link to see all of the larger format version (1.9 MB) of the overview map above.


Trapping Summary

The 2009 trapping results indicate that despite high populations in Eastern Canada, the rate of new finds in B.C. continued to be relatively static. 

The aerial treatment in Harrison Hot Springs was partially successful with a large reduction in affected area (see 2010 treatments).  An expected residual population was located in the hazelnut orchard where over 100 egg masses were discovered the previous year.  Several locations that had positive catches last year (Victoria, Chilliwack, Delta and Burnaby) did not have moths in 2009 indicating that these infestations died out on their own. 

The Ministry of Forest and Range has annual assisted the CFIA by hanging traps in provincial parks and recreation sites.  This year, two of these traps caught single moths, one in Chemainus and the other near Nelson in Kokanee Provincial Park.

Only one moth was trapped in the interior of the province and was found in Creston. 

Treatment plans for 2010 have been proposed (See Current Status).

 

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Contact Tim Ebata if you have comments on the presentation of this information.

BC Ministry of Forests and Range
Forest Practices Branch
P.O. Box 9513 Stn. Prov. Gov.
Victoria, BC
V8W 9C2

Section phone: (250) 387-8739
Section fax: (250) 387-2136