City of Saskatoon: Pest Management Division – Mosquito Control - DAY 1.
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Transcript of City of Saskatoon: Pest Management Division – Mosquito Control - DAY 1.
City of Saskatoon: Pest Management Division – Mosquito
Control - DAY 1
Pest Management in Saskatoon
• The city of Saskatoon uses the “Integrated Pest Management” (IPM) System which includes the following:– Planning and executing effective pest management
techniques– Setting thresholds based on health and environmental
needs– Surveillance, identification and detection of pests – Evaluation of the effectiveness of techniques to
ensure maximum success– Communication with the public to keep them informed
of pest management activities
Common Pests in Saskatoon:
• ______________________________________• ______________________________________• ______________________________________
• The City of Saskatoon is committed to using the __________________ control methods possible– The use of _________________________________
and only put into action when __________________ effective alternatives are available
Mosquitoes• Belong to the order Diptera
– Biting, _____________________________________– ___________________ group of insects– _____________________ species of mosquitoes in Sask.
• Have specialized _______________________________– Sword like mouth that punctures the skin and forces its way into
a blood vessel
• Require a _____________________– Blood is required by ___________________ mosquitoes
• ________________________ mosquitoes bite
– Blood is used as a protein to help ________________________– As a result, they are a nuisance to humans when they bite
• Saliva contains a protein which causes an allergic reaction in our skin, leaving us with ________________________
Life Cycle of a Mosquito
Mosquito Life Cycle: 1) Eggs• Eggs are laid by
_________________________ mosquitoes
• Eggs are laid where there is, or will be ___________________
• Eggs tend to be laid in _________________________
• Many eggs can be laid in the summer/fall of one season and remain _________________ over the winter– Eggs are then capable of hatching the
________________________ when the snow melts and forms pools of standing water
Mosquito Life Cycle: 2) Larva• Longest stage of development
– Takes approx _________________
• Found along the __________________________
• Feed on ___________________ in the water
• Breathe using a siphon tube that extends out of the water
• Known as __________________ due to the characteristic movement that they make
• Prime stage for ___________________________ mosquitoes
Mosquito Life Cycle: 3) Pupa• Shaped like a _________ • Known as a __________
based on its style of movement– Pupa tumble quickly through
the water• Difficult stage because it
____________________ to pesticide treatment– ______________________
with pesticides; mosquitoes will definitely hatch into adults
• Stage lasts approximately ____________________ and then the mosquito leaves the water as an adult
Mosquito Life Cycle: 4) Adult
• These are the mosquitoes we are used to seeing
• Males travel in ________________ to attract females– Male mosquitoes ______________
• Females travel ______________ to find swarms to reproduce
• Females then require a _________– Need blood for egg development– This is why we get bitten
• Mosquitoes are most prevalent between _____________________
• Mosquitoes are most active around _______________________ and on __________________________
Treatment of mosquitoes during their LARVAL stage is the most effective
– Larva is easy to locate• Can ONLY develop in ____________________________________• This is the ONLY stage where mosquito populations are
______________________________________________________– Larva is easy to identify
• Wrigglers can easily be ___________________ with the naked eye– Larva is easy to treat with pesticide
• Larvacide is easily ______________________________________– Pesticide is least harmful to humans and the environment
• Larvacide is a ___________________________ pesticide• ________________________ to humans and other animals• Bacteria that ONLY targets ________________________________• Does _____________________________ the environment
– Treating adult mosquitoes is too invasive and dangerous• Pesticide is highly toxic; ______________________________• Impossible to predict where large numbers of adult mosquitoes will
be; equally impossible to kill them all
Fighting Mosquitoes: Step 1- Identify the Larval Habitat
• Remember: Mosquito larva NEEDS a warm, shallow, standing water environment to grow
• Examples of standing water environments include:– ____________________________
___________________________, and any other areas that can collect water such as ____________________________
• Fast flowing, deep water is NOT a likely location for mosquito larva to grow– ____________________________
will likely not have mosquito larva– Why?
Fighting Mosquitoes: Step 2 – Check for and Identify Larva
• Check standing water for larva by taking a “dip”
• Use a _________________– Looks like a big soup ladle
• If larva is present, you will be able to see them ________________________ in the dipper
• Important to dip at many locations around one area of standing water (larva tends to _______________________)
• If there are _______________ larvae per dip, the use of pesticide is justified
Fighting Mosquitoes: Step 3 – Applying Pesticide
• Mosquito larvacide comes in a ________________________, attached to _______________
• It is applied to standing water using a ________________________
• In larger or more dangerous areas it is sprayed off the back of a vehicle known as an ________________– Argo’s are great for covering
_______________________ of shallow standing water
– They are 8-wheel drive• Virtually never can get stuck• Can travel almost vertically
– They can also ________________________