lesson 12 Flashcards
Which pest poses the gravest risk of food safety?
-house fly aka filth fly
How do house flies pick up filth?
- sticks to hair on their bodies
- eat waste matter w/microorganisms
estimated number of bacteria on house fly
28 million
estimated number of bacteria inside house fly
5 million
4 stages in life of house fly
- egg
- larva
- pupa
- adult
How many eggs can a female house fly lay in her lifetime?
-up to 900
how long does it take for white pupa to emerge from their eggs
-8-20 hrs
How long does the total development of the larva last in…
1) warm weather
2) cold weather
1) 1 week or less
2) up to 8 wks
Range of time for pupa to transform into adult
3 days - 5 weeks
Where do house flies prefer to lay eggs?
decaying organic materials
two kinds of electric fly trappers and which one is prohibited
- fly zapper (electrocutes fly) - prohibited
- fly catcher (glue trap)
Briefly describe appearance of fruit fly
- 1/8 inch
- red eyes
- tan thorax/head
Effects of consumption of fruit fly larvae
- intestinal pain
- diarrhea
Name the 2 diff types of roaches in NYC
- German Roach
- American Roach
Why are roaches so dangerous?
- can trigger allergic reaction (asthma)
- carry disease causing bacteria
Describe the appearance of an adult German Roach
- light
- 2 dark stripes on head
- 5/8 inches
Describe the appearance of a young German Roach
- wingless
- black
- single white stripe down middle
How many cockroach babies per egg approx
36
How does the female German cockroach carry her eggs
-capsule protruding from abdomen
How many days does it take for German cockroaches to hatch?
28-30 days
How long does it take for nymphs to develop?
40-125 days
Lifespan of German roach
around 200 days
Describe appearance of American cockroach
- 1.5 inches
- reddish/brown
- wings
- yellow margin on head
What is the difference in appearance between immature and adult American cockroach?
immature are wingless
Conditions preferable to American cockroaches
- moist
- warm (around 85)
What must be done in order to be able to use pesticides?
obtain certification as ‘commercial applicator’
Where is the Norway rat believed to have come from and how long ago?
- central Asia
- 1700s
Describe briefly appearance of norway rat
- reddish gray or brown (sometimes black)
- white belly
- coarse fur
- weigh about 1 pound
Preferred diet of rat
(balanced)
- meats
- fish
- grains
- nuts
- cereals
Lifespan of rat
1 year (outside) 3 years (in captivity)
True/false - rats have really good eyesight
false
Describe appearance of house mouse
- grayish brown
- 2-5 oz
Preferred diet of mouse
- seeds
- grains
How many days after mating are mice born
19-21
How many litters to female mice have/yr
5-10
What is the IPM?
Integrated Pest Management
3 principles of IPM
- starve them
- build them out
- destroy them
Signs indicating severity of rodent infestation
- droppings
- gnawing
- rodent runs
- burrows
- rodent odors
- runways
- urine stains
- rodent sounds
3 types of rodent harborage
- incidental
- temporary
- structural
What is the mass trapping technique?
setting up a large number of traps to catch as many rats as possible before they become trap shy
Which trapping method has the lowest success rate?
why?
- glue boards
- rodents detect the glue and avoid the traps
why is the use of rodenticide tracking powder not allowed in commercial food establishment
- ingredients mixed w/talcum powder
- higher concentration of toxins
True or false - service animals accompanying disabled person should be allowed into facility
true
