L5: Flies & Myiasis (MOST UTD)

Question 1

what does oviparous mean

Answer 1

flies lay eggs

Question 2

what does ovoviparious mean

Answer 2

flies release larvae

Question 3

what does hematophagous mean

Answer 3

flies feed on blood

Question 4

what is myiasis

Answer 4

larval stage of fly feeds on host tissues

Question 5

consequences of biting flies

Answer 5

• disrupt normal behavior
• inflammatory response to bites leads to further disruptive behaviors
• pruritis, dermatitis, scratching, biting etc
• transmit pathogens

Question 6

how do non-biting flies irritate/damage the mucous membranes of their hosts

Answer 6

spines on their mouthpart

Question 7

consquences of non-biting flies

Answer 7

• transmit pathogens
• myiasis can cause: tissue destruction, secondary bacterial infections and obstruction of respiratory / GI tracts

Question 8

what are the 3 important genus of mosquitoes to know

Answer 8

• Aedes
• Anopheles
• Culex

Question 9

what are two important pathogens transmitted by mosquitoes

Answer 9

• Canine heartworm
• plasmodium - malaria

Question 10

this fly causes simuliotoxicosis

Answer 10

Black flies
toxins build up in animals bitten by LOTS of black flies, causes them to go into shock and die

Question 11

what are the 2 important species of black flies (Simuliidae)

Answer 11

• Leucocytozoon spp. (devastating to birds, esp poultry)
• Simulium - feed on blood of birds/mammals

Question 12

Musca autumnalis

Answer 12

face fly
feed on ocular/nasal discharge of livestock

Question 13

Musca domestica

Answer 13

• housefly
• most abundant insect pest associated w/ livestock, poultry and people
• feed on ocular/nasal discharge and other bodily fluids

Question 14

important species of Midges

Answer 14

Culicoides spp.
biters of mammals and birds

Question 15

important parasite transmitted by midges

Answer 15

Leucocytozoon

Question 16

what fly causes equine allergic dermatitis

Answer 16

Midges (Culicoides spp)

Question 17

2 important species of Sandflies

Answer 17

• Lutzomyia (new world)
• Phlebotomus (old world)

Question 18

pathogen carried by Sandflies

Answer 18

Leishmania spp.

Question 19

Tabanus

Answer 19

horseflies

Question 20

Chrysops

Answer 20

deerflies

Question 21

pathogen carries by Horseflies (Tabanus) & Deerflies (Chrysops)

Answer 21

Trypanosoma spp
has large impact on hoofstock

Question 22

Haematobia spp

Answer 22

horn flies

Question 23

where do Haematobia spp. (hornflies) live in relation to their host

Answer 23

live on cattle

Question 24

Stomoxys spp.

Answer 24

Stable flies

Question 25

where do Stomoxys spp. (stable flies) live in relation to their host

Answer 25

on the legs

Question 26

Hippoboscidae

Answer 26

keds or louse flies

Question 27

Melophagus ovinus

Answer 27

Sheep ked wingless, spend their entire life cycle on the host

Question 28

Glossinidae

Answer 28

tsetes flies (Glossina spp.)

Question 29

Tsetes flies (Glossinidae) are vectors of what pathogen?

Answer 29

Trypanosoma bruceri * causes **nagara** in domestic animals * causes **sleeping sickness** in humans

Question 30

obligae myiasis

Answer 30

larvae require a live host for food

Question 31

facultative myiasis

Answer 31

larvae eat dead flesh (carrion) or sometimes infest a live animal

Question 32

Wohlfahrita vigil

Answer 32

gray flesh fly -obligate myiasis

Question 33

what type of myiasis do Wohlfahrita vigil exhibit

Answer 33

(gray flesh flies) obligate myiasis

Question 34

two important species of Blowflies

Answer 34

* ***Cochliomyia hominivorax*** (new world screwworm) : obligae myiasis * ***Lucilia sericata*** (common green bottle fly): facultative myiasis

Question 35

Cochliomyia hominivorax

Answer 35

new world screwworm type of blowfly

Question 36

what type of myiasis do cochliomyia hominivorax exhibit

Answer 36

obligate (new world screwworm)

Question 37

what type of myiasis do Lucilia sericata exhibit

Answer 37

facultative (Common green bottle fly)

Question 38

Oestridae

Answer 38

botflies

Question 39

what type of myiasis do **Oestridae (botflies)** exhibit

Answer 39

oestridae = botflies obligate myiasis adults don't feed

Question 40

Oestrus ovis

Answer 40

Sheep nasal botfly

Question 41

Hypoderma spp.

Answer 41

Heel flies

Question 42

Gasterophilus spp.

Answer 42

Horse botlfies cause GI myiasis

Question 43

Cuterebra spp.

Answer 43

botflies of rabbits and rodents

Question 44

consequences of Cuterebra spp. in dogs and cats

Answer 44

complications caused by wandering alrvae - myiasis of eye, nasal, oral regions - cerebrospinal cuterebriasis (potentially fatal) normal hosts are rabbits and rodents

Question 45

fly that can cause cerebrospinal cuterebriasis in dogs/cats

Answer 45

Cuterebra spp. of botflies