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Fly Management · Be a fly detective: first, identify the type of fly, second, find its breeding...
Transcript of Fly Management · Be a fly detective: first, identify the type of fly, second, find its breeding...
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Fly Management Sanitation and Preventing Entry
are Keys to Management
Nebraska Extension
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Flies breed in moist organic matter usually laden with germs
Many flies carry germs on their bodies that can cause human illnesses Diarrhea, typhoid,
cholera, and other diseases
Nuisance flies are distracting to people
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Fly Life Cycle Flies lay eggs in moist organic matter
Eggs hatch into maggots Maggots consume organic
matter Soft-bodied maggots
need moisture to survive
When mature, maggots pupate in the soil Pupa looks like brown
seed
Adult fly emerges from pupa, ready to breed
Pupa
Maggot
Eggs
Adult Fly
Photo: University of Nebraska–Lincoln Department of Entomology
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Fly species often prefer specific types of organic matter
Correct identification is key to help locate breeding site
Flies caught with a sticky trap can be readily identified
by an expert
Photo: UNL Extension in Lancaster County
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Flies inside facilities may be breeding outdoors or indoors Outdoor-breeding flies follow food odors
through windows/doors
Flies breed indoors in decaying organic matter This is often a sanitation problem…
Be a fly detective: first, identify the type of fly, second, find its breeding source, and finally,
eliminate further breeding to solve the problem
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The garbage dumpster is a common breeding site Filth breeding flies
Photo: University of Nebraska–Lincoln
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How do outdoor flies get inside?
Flies follow odors into buildings
Come in through open doors and windows
door dumpster
Photo: Iowa State University
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Dumpsters should be located away from the building
Sanitize dumpsters frequently to reduce breeding areas, especially in warm months
Photo: University of Nebraska–Lincoln
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Keep dumpster lids closed to prevent infestations of flies and other pests
Overflowing trash? Schedule more frequent pick-ups or increase recycling
Photo: Iowa State University
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Prevent Entry by Good Building Maintenance Keep window screens in
good condition
Install automatic door closers
Use air screens A fan, located above doors,
will make it harder for flies to come into a building
Photo: University of Nebraska–Lincoln
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House Flies can develop from egg to adult in less than a week in the summer
House flies and related flies that breed in
animal waste and garbage are often called “filth flies”
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Know Your Filth Flies… Some filth fly species
are attracted to a specific type of organic matter as a breeding site
Most likely sources: Animal Waste (feces) Rotting vegetation Garbage Dead animal carcasses
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Know Your Filth Flies… House Flies Sponging
mouthparts contaminate food
Breed in garbage and feces, usually outdoors
Common structure-invading fly
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Know Your Filth Flies… Stable Flies
Piercing sucking (bloodsucking) mouthparts
Bite ankles Breed in decaying
plant material, fresh grass clippings, and feces
Uncommon inside, but bite outdoors
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Bottle Flies (Blow Flies) and Flesh Flies breed in dead animal carcasses
Bottle Flies: metallic green, blue, bronze
Flesh Flies: gray bodies, distinctive red eyes
Green Bottle Fly Blue Bottle Fly
3-striped thorax
Checkered abdomen
Photo: UNL Extension in Lancaster County
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Bottle Flies and Flesh Flies often find fresh carrion within minutes
Used by police in murder cases, where time/date of death is needed
Have a “flush” of bottle flies or flesh flies inside? Most common source is a
dead mouse in a trap or inside a wall
Photo: University of Nebraska–Lincoln
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In urban areas, dog feces are a primary breeding site for filth flies Stable flies
Bottle flies
House flies
-All these fly species breed in dog feces
-Cleaning up after pets will
reduce flies
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Gnat is a word used to describe tiny to small flies
Small flies breed in: Decaying fruits and
vegetables
Beverage liquid (soft drink recycling areas)
Drains and garbage disposals
Sewage water
Soil of over-watered plants Phorid Flies, also called
“humpback” flies
Photo: UNL Extension in Lancaster County
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Phorid Flies Small, 1/16-1/8 inch
Similar to fruit fly, but do not have red eyes
Run across surfaces before taking off to fly
Decomposing vegetables, fruit, mop bucket
Crack in drain pipe can produce huge infestations Yellowish-brown body
Photo: UNL Extension in Lancaster County
Unique wing veins
Hump behind head
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Fruit Flies Small, 1/8”
Yellow-brown flies with red eyes
Attracted to fermenting fruit and vegetables and yeasty smells
Fruit Fly maggots feed on overripe peach
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Fruit Flies also breed in trash containers not cleaned regularly Check bottom of trash
containers
Look under dumpsters/trash compactors
Check out recycling areas, especially soda pop cans
Don’t forget: Floor drains and garbage
disposals
Photo: University of Nebraska–Lincoln Department of Entomology
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Moth Flies are also called Drain Flies Fly identity important for
control
Moth fly lays eggs on the gelatinous film inside a drain
Larvae feed on the gunk that lines the drains; adults emerge from drain
Inspect all drains
1/8” long
Photo: University of Nebraska–Lincoln Department of Entomology
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Moth Flies are also called Drain Flies Sump pump pits and sewers
are also potential breeding sites
Finding and eliminating the breeding site is the primary strategy for managing drain flies
1/8” long
Photo: University of Nebraska–Lincoln Department of Entomology
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Fungus Gnats Small (1/8”), long legs
and antennae, tiny head
Larvae feed on fungus in soil
Overwatered potted plants produce fungus gnats
Photo: University of Nebraska–Lincoln Department of Entomology
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Managing Fungus Gnats
Reduce frequency of watering
Let pots dry out in between waterings
Repot plants, if necessary
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Light Traps helpful for invading flies Good for kitchens and cafeterias
Black or UV light
Flies trapped on sticky paper
Work 24/7, if left on Photo: University of Nebraska–Lincoln
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Mechanical Controls
Fly swatters, fly paper, and sticky traps Useful for monitoring
and eliminating small number of flies
Will not eliminate breeding sites
Augment control efforts
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Chemical Controls should not be routinely used Eliminating the
source is long-term solution
Chemicals are an unnecessary health risk and may not be effective when used alone
Darksided Fungus Gnat larvae in rotting potato
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Credits Content Specialist Barbara Ogg, Nebraska Extension Educator
Emeritus
Content Editor Erin Bauer, Nebraska Extension
Photos Barbara Ogg, Nebraska Extension Educator
Emeritus
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Credits Photos cont. Leon Higley, Department of Entomology,
University of Nebraska–Lincoln
James Kalisch, Department of Entomology, University of Nebraska–Lincoln
Clyde Ogg, Nebraska Extension
Erin Bauer, Nebraska Extension
Iowa State University
Nebraska Extension
University of Nebraska–Lincoln Department of Entomology
Note: Photos and artwork not credited are public
domain/clipart