MICHIGAN MOSQUITO CONTROL 7F
CERTIFICATION EXAM PREP
QUESTIONS AND ANSWERS
1. Which mosquito genus is characterized by laying eggs in ‘rafts’ on the surface of stagnant
water?
A. Aedes
B. Anopheles
C. Culex
D. Psorophora
Answer: C
Conceptual Explanation: Culex and Culiseta species lay their eggs in rafts, whereas Aedes
and Psorophora lay eggs singly on damp soil, and Anopheles lay single eggs with floats.
2. At which stage of the mosquito life cycle does the insect not feed and remain active via
‘trumpets’ for breathing?
A. Pupa
B. L4 Larva
,C. Adult
D. Egg
Answer: A
Conceptual Explanation: The pupal stage is a non-feeding stage where the mosquito
undergoes metamorphosis; it uses respiratory trumpets to breathe at the water surface.
3. In Michigan, which species is the primary vector for Eastern Equine Encephalitis (EEE)?
A. Culex pipiens
B. Culiseta melanura
C. Aedes vexans
D. Anopheles quadrimaculatus
Answer: B
Conceptual Explanation: Culiseta melanura is the primary enzootic vector of EEE,
maintaining the virus cycle in bird populations in hardwood swamps.
4. What is the specific mode of action for the larvicide Bacillus thuringiensis israelensis (Bti)?
A. Disruption of the midgut epithelium
B. Physical suffocation via surface film
C. Chitin synthesis inhibition
D. Juvenile hormone mimicry
, Answer: A
Conceptual Explanation: Bti contains crystalline proteins that, when ingested, are
activated by the alkaline pH of the mosquito larva’s midgut, causing the gut wall to rupture.
5. Under the Michigan Natural Resources and Environmental Protection Act (Part 83), what is
required for commercial mosquito applications in residential areas?
A. Post-application signage on every lawn
B. Written contracts and specific notification procedures
C. Off-target drift must be 0% regardless of wind
D. Daily reporting to the EPA
Answer: B
Conceptual Explanation: MDARD regulations require specific notification and contract
requirements for commercial pesticide applications to ensure residents are informed.
6. Which environmental condition is most likely to cause an ‘inversion,’ affecting the efficacy
of ULV adulticiding?
A. Warm air trapped near the ground by cooler air above
B. High wind speeds exceeding 15 mph
C. Cool air trapped near the ground by warmer air above
D. Heavy rainfall during the application window
Answer: C
CERTIFICATION EXAM PREP
QUESTIONS AND ANSWERS
1. Which mosquito genus is characterized by laying eggs in ‘rafts’ on the surface of stagnant
water?
A. Aedes
B. Anopheles
C. Culex
D. Psorophora
Answer: C
Conceptual Explanation: Culex and Culiseta species lay their eggs in rafts, whereas Aedes
and Psorophora lay eggs singly on damp soil, and Anopheles lay single eggs with floats.
2. At which stage of the mosquito life cycle does the insect not feed and remain active via
‘trumpets’ for breathing?
A. Pupa
B. L4 Larva
,C. Adult
D. Egg
Answer: A
Conceptual Explanation: The pupal stage is a non-feeding stage where the mosquito
undergoes metamorphosis; it uses respiratory trumpets to breathe at the water surface.
3. In Michigan, which species is the primary vector for Eastern Equine Encephalitis (EEE)?
A. Culex pipiens
B. Culiseta melanura
C. Aedes vexans
D. Anopheles quadrimaculatus
Answer: B
Conceptual Explanation: Culiseta melanura is the primary enzootic vector of EEE,
maintaining the virus cycle in bird populations in hardwood swamps.
4. What is the specific mode of action for the larvicide Bacillus thuringiensis israelensis (Bti)?
A. Disruption of the midgut epithelium
B. Physical suffocation via surface film
C. Chitin synthesis inhibition
D. Juvenile hormone mimicry
, Answer: A
Conceptual Explanation: Bti contains crystalline proteins that, when ingested, are
activated by the alkaline pH of the mosquito larva’s midgut, causing the gut wall to rupture.
5. Under the Michigan Natural Resources and Environmental Protection Act (Part 83), what is
required for commercial mosquito applications in residential areas?
A. Post-application signage on every lawn
B. Written contracts and specific notification procedures
C. Off-target drift must be 0% regardless of wind
D. Daily reporting to the EPA
Answer: B
Conceptual Explanation: MDARD regulations require specific notification and contract
requirements for commercial pesticide applications to ensure residents are informed.
6. Which environmental condition is most likely to cause an ‘inversion,’ affecting the efficacy
of ULV adulticiding?
A. Warm air trapped near the ground by cooler air above
B. High wind speeds exceeding 15 mph
C. Cool air trapped near the ground by warmer air above
D. Heavy rainfall during the application window
Answer: C
