| NSMAD's Chief Inspector James Binnall: Treating some Standing Water in District.....Circa:1980 |
containing methoprene (an
insect growth-regulator that is
similar to that found naturally
in mosquito larvae) as the
primary means of control used
to treat small enclosures of
water such as poorly maintain-
ed ornamental ponds, aband-
oned swimming pools, and
catch basins. These breeding
hotspots continuously produce
Culex mosquitoes. and once in
the water, These chemical
briquettes, when placed in
these breed- ing sites, slowly
insect growth-regulator that is
similar to that found naturally
in mosquito larvae) as the
primary means of control used
to treat small enclosures of
water such as poorly maintain-
ed ornamental ponds, aband-
oned swimming pools, and
catch basins. These breeding
hotspots continuously produce
Culex mosquitoes. and once in
the water, These chemical
briquettes, when placed in
these breed- ing sites, slowly
© 2008 NSMAD
release methoprene into the water and prevent mosquito larvae from
developing past the pupae stage. It is a mosquito specific treatment;
therefore other organisms in the environment (such as insects, waterfowl, and
mammals) do not suffer deleterious effects. In 2003,the NSMAD applied
approximately 991 lbs. Throughout the District.
developing past the pupae stage. It is a mosquito specific treatment;
therefore other organisms in the environment (such as insects, waterfowl, and
mammals) do not suffer deleterious effects. In 2003,the NSMAD applied
approximately 991 lbs. Throughout the District.
The N.S.M.A.D. also uses two types of widely used bacterial larvicides.
These larvicides are mosquito specific and are safe to humans and other
mammals. In order to treat small marshes and catch basins, the district
applied Bacillus thuringiensis var. Israelensis (BTI). BTI, used in either
granular, liquid, or briquette formulations, is spread over flooded land or in
depressions that periodically flood or in catch basins that are not completely
flushed after a heavy rain .
These larvicides are mosquito specific and are safe to humans and other
mammals. In order to treat small marshes and catch basins, the district
applied Bacillus thuringiensis var. Israelensis (BTI). BTI, used in either
granular, liquid, or briquette formulations, is spread over flooded land or in
depressions that periodically flood or in catch basins that are not completely
flushed after a heavy rain .
The District also uses Bacillus sphaericus (B.s.). B.s. is similar to BTI in
respect to its mosquito specificity and ability to be used in wastewater,
drainage systems, tire dumps, rice fields, coastal areas, and natural or
manmade aquatic sites. However, in contrast to BTI, B.s. can be applied in
stagnant and polluted water-areas where the encephalitis transmitting Culex
sp. breeds. Overall, in 2003, the NSMAD applied approximately 5006 lbs. of B.s.
throughout the District.
respect to its mosquito specificity and ability to be used in wastewater,
drainage systems, tire dumps, rice fields, coastal areas, and natural or
manmade aquatic sites. However, in contrast to BTI, B.s. can be applied in
stagnant and polluted water-areas where the encephalitis transmitting Culex
sp. breeds. Overall, in 2003, the NSMAD applied approximately 5006 lbs. of B.s.
throughout the District.
for approximately 90% of our field program. We treated approxim-
ately 4376 sites and over 42,000 catchbasins. Swampy lowland areas, new
construction sites, ditches along roadways and railroad right-of-way, flooded
yards, storm sewers, and other small temporary impoundments of water were
all potential sources of mosquito reproduction when water was stangnant for
approximately 6-10 days without treatment. Fishponds and ornamental pools
were also inspected periodically for the presence of mosquito larvae. Treat-
ment of these mosquito-breeding sites is the primary objective of the larvici-
ding program. The inspection of these areas continues throughout the summer
on a weekly basis. When larviciding, the District uses pellets and briquettes
ately 4376 sites and over 42,000 catchbasins. Swampy lowland areas, new
construction sites, ditches along roadways and railroad right-of-way, flooded
yards, storm sewers, and other small temporary impoundments of water were
all potential sources of mosquito reproduction when water was stangnant for
approximately 6-10 days without treatment. Fishponds and ornamental pools
were also inspected periodically for the presence of mosquito larvae. Treat-
ment of these mosquito-breeding sites is the primary objective of the larvici-
ding program. The inspection of these areas continues throughout the summer
on a weekly basis. When larviciding, the District uses pellets and briquettes
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| North Shore Mosquito Abatement District Larviciding Program |
| Larviciding Program |
|
Larviciding is aimed at
controlling mosquito larvae
at the source of reproduction
where it is most concentrat-
ed and vulnerable. Approxi-
mately 80-90% of the Distric-
ts field program is directed
toward controlling mosquito
larvae in an average season,
thus larviciding is the major
operational program of the
District. In 2003, larviciding
accounted
controlling mosquito larvae
at the source of reproduction
where it is most concentrat-
ed and vulnerable. Approxi-
mately 80-90% of the Distric-
ts field program is directed
toward controlling mosquito
larvae in an average season,
thus larviciding is the major
operational program of the
District. In 2003, larviciding
accounted