Gypsy Moth Trapping Results in 2005

Results of Canadian Food Inspection Agency's Annual Monitoring and Ministry of Forest and Range's Mass Trapping

In the summer of 2005, 135 male moths were caught in pheromone traps in the following locations - Maple Ridge (1), Langley (3 mt), Cloverdale (2), Surrey (1), Delta (4), Burnaby (3), Coquitlam (1), Silver Ck. (1), Courtenay (8), Nanaimo (11), Gabriola Is. (19 mt), Salt Spring Is. (42), Duncan (2 mt), Sidney (8), Central Saanich (1), Christmas Hill (1), Esquimalt (1), Colwood (1), Saanich (17 mt), Cedar Hill (6), and Oak Bay (1).    High density mass trapping grids (trap density at 9 traps/ acre or 5760 traps/sq.mi., inter-trap distance 70 ft) were used on Gabriola Island, Saanich, Langley and Duncan.  The Duncan mass trapping grid, produced encouraging results with a dramatic reduction in catches from 24 in 2004 to 2 in 2005.  Similarly, the Gabriola trapping resulted in a slight decrease (from 22 to 19) in 2005 but more importantly a non-viable (unfertilized) egg mass was recovered (see the alternative treatment page).  Both Duncan and Gabriola mass trapping projects will continue in 2006.  See the 2005 detailed trapping results page for more detailed maps and trapping information. 

Egg masses searches are completed with the discovery of viable (fertilized) egg masses in Saanich and Salt Spring Island.

Because of the high number of male moths caught in both Nanaimo and Salt Spring Island indicate a  growing population, aerial applications are proposed for Spring (April to June) 2006 to eradicate these  gypsy moth populations in these two locations. 

In Saanich, a viable egg mass was discovered on the edge of the mass trapping grid.  As a result, a small, highly accessible area in Saanich is slated for ground spraying in the Spring of 2006.

More details on the proposed treatments are available on the Treatment Status page.

Click on the map below to see a higher resolution 8 x 11" version:

Overview of 2005 Gypsy Moth Trapping Results

Back to the History Page | Gypsy moth HOME

---

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

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

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