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In the summer of 2009, 30 male moths were caught in
24 pheromone traps at 12 locations listed below:
BC Interior: Nelson - Kokanee Creek Provincial Park (total = 1 moth)(MFR
trap)
Lower Mainland/Fraser Valley: (total = 25 moths in 19 traps at 7 locations)
Harrison Hot Springs (5 dt), S. Surrey/White Rock (5 dt), Burnaby (1 dt),
Richmond (10 dt), Vancouver (1), N & W Vancouver (2), Langley (1 dt),
Delta (3), Abbotsford (2) Vancouver
Island: (total = 4 moths in 4 traps at 4 locations)
Comox (1), Shawnigan Lake (1), Duncan (1), Chemainus (1)(MFR trap)
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).
Positive Trap Catches in 2009 - Click on the individual maps for a larger image. Use this
link to see all of
the larger format version (783 k) 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
2009 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
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Gypsy Moth Trapping Results in 2009
