Aerial Larvicide program – 2015
APPLICATIONS COMPLETED IN BILLERICA & CHELMSFORD
APRIL 22 AND BOXBOROUGH APRIL 23. INITIAL RESULTS ARE BELOW.
Map of proposed
application areas for Billerica – 600+/- acres
Map of proposed
application areas for Chelmsford – 522+/- acres
Map of proposed
application areas for Boxborough – 880+/- acres
Billerica: 87.76% overall reduction
Boxborough: 100.00% overall reduction
Chelmsford: 92.45% overall reduction
Click here for a YouTube
video from 2009
Operational reports (pdf): 2007 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014
Please note; this is NOT A PROGRAM TO SPRAY FOR ADULT MOSQUITOES. This program will use
a granulated bacterial product ONLY OVER WETLANDS confirmed to have
active mosquito larvae. This is
the same product we have used for over 25 years
in member cities and towns as
part of our standard larval control program.
legal notice was
placed in the Boston Globe per 333CMR 13.04(7) on Feb. 4, 2015. Our website will have up to date information posted on the home page as
it becomes available.
reduce the emergence of spring
brood mosquitoes, notably Ochlerotatus excrucians,
in the towns of Billerica, Chelmsford & Boxborough.
MATERIALS AND METHODS:
Using helicopter applications
of Bacillus thuringiensis israelensis
(Bti), a non-reproducing bacteria used
for the control of mosquito
larvae, the total numbers of spring brood mosquitoes can be reduced. This
is the same
product we have used for nearly 25
part of our regular ground larval program. Maps
of the treatment sites using
GIS software will be prepared for
the contractor. These sites
have been selected using data collected by the CMMCP staff.
we have identified potential areas
of mosquito breeding, we will only
target these areas after confirmation is
received from field observations (pre-surveillance).
All areas will be sampled using
procedures and protocols in the mosquito
control Generic Environmental Impact Report:
An average of
1 mosquito per dip over 10 dips will be used
as a threshold
to determine if an application in that area is
We will have
at least 1 dip station per 250 acres
as a monitoring device.
confirmation is received, the area
will be designated for treatment.
We will generate a report on this
program using the pre and post treatment data we collect. This report will be used
to show efficacy, and will also be sent
to other neighboring towns to
encourage their participation next year, since
this type of program is most
effective on a regional basis. Considering
the similarity of topography in
many towns, we feel confident we
can reduce spring brood numbers, thus
reducing the dependence on our adulticide program.
typically happen in the third week in April, but this
is dependent on the larval stage (the target stage
is the 2nd to 3rd
instar) and weather factors. Site visits will determine the actual date(s) of application. I would anticipate this application to take two to three days, but this
will also be subject to the current weather conditions.
wetland types over 1 acre have
been outlined on the maps. These wetland types
(wooded swamp deciduous, conifer & mixed; shallow
swamp) have been identified as the preferred habitat for the target species.
We will field check these sites,
and any sites
under 5 acres that we identify as not suitable
for this application will be
removed for consideration and
monitored and treated if necessary as
part of our regular, ground larval control program.