6 (1) vet entomology

Question 1

What order do mosquitoes belong to?

Answer 1

Diptera

Question 2

What family of mosquitoes is referred to as Culicidae?

Answer 2

Culicidae

Question 3

What is the life history (life cycle) type of Culicidae mosquitoes?

Answer 3

Holometabolous

Question 4

How many species of Culicidae are estimated to exist worldwide?

Answer 4

~2,500 species

Question 5

What is the approximate number of human deaths caused by mosquito-borne diseases annually?

Answer 5

~750,000+ human deaths/year

Question 6

What are the two types of antennae in Culicidae mosquitoes?

Answer 6

Males have plumose antennae; females usually have shorter palps

Question 7

What organ do male mosquitoes use to detect hosts and mates?

Answer 7

Johnston’s organ

Question 8

How many sensory cells are present in male mosquitoes?

Answer 8

15,000 sensory cells

Question 9

What are the types of mosquito egg-laying?

Answer 9

• Singly
• In rafts
• Directly on water surface
• Near water line

Question 10

What do mosquito larvae breathe through?

Answer 10

A siphon on the last abdominal segment

Question 11

What term is used to describe mosquito larvae?

Answer 11

Wrigglers

Question 12

What are the resting behaviors of mosquito larvae indicative of?

Answer 12

Genera

Question 13

What is the intermediate stage between mosquito larvae and adults called?

Answer 13

Pupae

Question 14

What is the term for mosquito pupae?

Answer 14

Tumblers

Question 15

What do female mosquitoes require for egg production?

Answer 15

A blood meal after mating

Question 16

What are the three main types of mosquito habitats?

Answer 16

• Permanent water mosquitoes
• Flood water mosquitoes
• Tree hole/container mosquitoes

Question 17

What type of water do permanent water mosquitoes prefer?

Answer 17

Fresh, slow-moving permanent water

Question 18

Where do flood water mosquitoes deposit their eggs?

Answer 18

In damp soil at margins of impressions that intermittently flood

Question 19

What type of mosquitoes are associated with artificial containers?

Answer 19

Tree hole/container mosquitoes

Question 20

Which genera of mosquitoes are of veterinary concern?

Answer 20

• Anopheles
• Aedes
• Culex
• Psorophora
• Toxorhynchites

Question 21

What are the characteristics of Anopheles mosquitoes?

Answer 21

• Usually spotted wings
• Palps as long as proboscis
• Larvae rest parallel to water surface

Question 22

What is the biological activity period of Anopheles mosquitoes?

Answer 22

Crepuscular activity

Question 23

Which species of Anopheles is most important for malaria transmission in the U.S.?

Answer 23

Anopheles quadrimaculatus

Question 24

What are the characteristics of Aedes mosquitoes?

Answer 24

• Many peridomestic
• Short larval siphon length

Question 25

What are the vectors of La Crosse virus and dog heartworm?

Answer 25

Aedes mosquitoes

Question 26

What are the characteristics of Culex mosquitoes?

Answer 26

* Wings without spots * Palps much shorter than proboscis

Question 27

What is a common species of Culex in the southern U.S.?

Answer 27

Culex pipiens quinquefasciatus

Question 28

What is a characteristic of Psorophora mosquitoes?

Answer 28

Large with painful bites

Question 29

What is the biocontrol potential of Toxorhynchites mosquitoes?

Answer 29

Larvae feed on other mosquito larvae; adults do not bite

Question 30

What is one method of mechanical control for mosquitoes?

Answer 30

Aeration can reduce mosquito development

Question 31

What biological control method involves the use of a specific fish?

Answer 31

Mosquitofish (Gambusia affinis)

Question 32

What bacterium is used for biological control of mosquito larvae?

Answer 32

Bacillus thuringiensis subsp. israelensis

Question 33

What type of control includes insecticidal mists and sprays?

Answer 33

Chemical control