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REHS review > Zoonoses/Vectors/Pest Management/Weeds > Flashcards

Zoonoses/Vectors/Pest Management/Weeds Flashcards

(60 cards)

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1
Q

What mosquito carries malaria

A

Anopheles

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2
Q

What mosquito is the highest cause of encephalitis in the US?

A

Culex

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3
Q

Most common cockroach in the US

A

German Cockroach

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4
Q

What rodent is most likely to carry Hantavirus?

A

Rodents

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5
Q

Why do you hire certified pest operators?

A

Certain Pesticides may only be applied under the direct supervision of specially trained and certified applicators.

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6
Q

Psittacosis is transmitted by

A

infected birds/parrots. Also known as parrot fever/ornithosis

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7
Q

Which cockroach is most common in urban areas?

A

German

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8
Q

Dengue fever is spread by

A

Aedes Mosquito

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9
Q

How many stages is in the lifecycle of a bed bug?

A

7 stages.
1. Egg
2. 1st stage nymph
3. 2nd stage nymph
4. 3rd stage nymph
5. 4th stage nymph
6. 5th stage nymph
7. Unfed adult male/female

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10
Q

What do you see during bubonic plague?

A

Rats, flies, corvid birds (crows/ravens).
Rats= carrier of disease/bacteria(yersinia pestis) from fleas
Flies and corvid birds= not carriers of the disease but were common because of the death toll. Corvid birds and flies feast on dead bodies.

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11
Q

Primary methods for rodent control

A

Sanitation and rodent exclusion. Prevention of rodent infestation is first line.

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12
Q

Most effective method to control one or a few rodents

A

Snap traps

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13
Q

Large populations of rodents would require the use of

A

Rodenticides

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14
Q

Single dose rodenticides

A

Bromethalin
Cholecalciferol
Zinc phosphide
Red squill

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15
Q

Multi-dose rodenticides

A

Anticoagulants:
Brodifacoum
Bromadiolone
Chlorpacinone
Diphacinone
Pindone
Warfarin (general use pesticide)

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16
Q

Mosquitoes are vectors for filariasis which is caused by

A

Nematodes (W. bancrofti). Filiriasis is also known as elephatiasis.

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17
Q

Yellow fever is transmitted by which mosquito

A

Aedes

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18
Q

Mosquito life cycle

A
  1. Egg
  2. Larvae
  3. Pupa
  4. Adult
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19
Q

Methods of Mosquito Control

A

Physical, Biological, Chemical
1. Physical- Dispose of old tires, drain buckets, drain any standing water (prevent harborage)ā€“>best way to control.

  1. Biological- mosquito eating fish.
  2. Chemical- use of natural and synthetic chemicals
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20
Q

5 Dā€™s of mosquito prevention

A

Dawn:
-Avoid mosquito mealtimes early evening to early morning hours.
Dusk
-Avoid mosquito mealtimes early evening to early morning hours.
Dress
- wear light colored, loose fitting clothing. Wear long sleeves and pants if possible.
Defend/Deet
-use mosquito repellent such as DEET, Picaridin, or oil of lemon eucalyptus
Drain
-Drain any standing water. Mosquitoes breed in stagnant water.

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21
Q

Most severe form of malaria

A

Plasmodium falciparum

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22
Q

Most common form of malaria

A

Plasmodium vivax

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23
Q

Malaria is what type of organism?

A

Protozoa

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24
Q

Not effective for mosquito control

A
  1. anti-mosquito plants
  2. buzzers
  3. Purple martin birds
  4. bat houses
  5. bug zappers
  6. New CO2 traps
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25
Flea-borne diseases
1. Plague 2. Endemic Typhus or murine typhus 3. tapeworms (by ingestion) 4. Flea-bite allergy
26
Organism that causes bubonic plague
Yersinia pestis
27
Flea that caries the plague
Xenopsylla cheopis flea
28
Tickborne diseases
Rocky Mountain Spotted Fever Lyme Disease Ehrlichiosis Tularemia
29
Tick that transmits rocky mountain spotted fever
Dermacentor tick
30
Tick associated with lyme disease
Ixodes tick
31
Amblyomma americanum (Lone star tick) transmits what disease/s?
Ehrlichiosis Tularemia
32
Organism that causes RMSF
Rickettsia rickettsii
33
Organism that causes Lyme Disease
Borrelia burgdorferi
34
Louse-borne diseases
Ectoparasitic infestations: Pdiculus humanus capitus (head lice) Pediculus humanus corporis (body lice) Phthirus pubis (crab lice) Diseases: Epidemic typhus Trench Fever Louse borne Relapse Fever
35
Organism that causes epidemic typhus
Rickettsia prowazekii
36
The infestation of tissues of host animals by fly larvae is called
Myasis
37
Best method for active control of mosquitoes
Larvicide
38
Length of time houseflies can harbor bacteria in their stomach
4 weeks
39
Peak season for rats to breed
Spring and Fall because of higher temperature and more food.
40
Rattus rattus is also known as
Black rat, Fruit rat, Ship rat
41
Rattus norvegicus is also known as
Sewer rat, Norway rat, House rat, brown rat
42
Adult rats require ___ oz of food per day
1 oz
43
Bait application program should be started ____ days prior to site abandonment/conversions and before earth moving equipment is brought to the site.
10-14 days
44
Chigger is the larval stage of
mites
45
A house mouse can fit through a hole as small as
1/4" in diameter
46
Female rats become sexually mature at what age?
2-3 months
47
A single pair of rats can produce how many litters of young per year?
4-7 litters per year
48
When/What time of year should bat proofing be done?
late fall through winter. This is when bats are hibernating.
49
Concentrations of less than ____ pollen grains/cubic meter of air in a 24 hour period do not produce allergic reactions
33
50
Most ragweed pollen settle to the ground within about
200 feet from their source
51
Most effective for control of ragweed
2,4-D (2,4-dichlorphenoxyacetic acid)
52
A mature ragweed plant can produce up to ____ pollen grains in one season
1 billion pollen grains.
53
A pigeon control program to eliminate nesting places should be preceded by
Ectoparasite control
54
Chagas disease is also known as
American Trypanosomiasis
55
Weil's disease is also known as
Leptospirosis
56
Endemic typhus is spread by
fleas. Epidemic typhus is spread by lice
57
African Trypanosomiasis is also known as
Human African Sleeping Sickness
58
River blindness is also known as
Onchocerciasis
59
Scrub typhus is spread by
Mites
60
How deep can a fly burrow into compact soil?
6 inches

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