Obligatory Myiasis

Question 1

What is the definitive host of Cuterebra spp?

Answer 1

Rodents and rabbits

Question 2

What is the common name of Cuterebra spp?

Answer 2

Rodent bot fly

Question 3

What is the predilection site of Cuterebra spp?

Answer 3

SQ tissue

Question 4

What is the route of transmission of Cuterebra spp?

Answer 4

Enters via body opening

oral, nasal, ocular, open wound

Question 5

What is the pathogenesis of Cuterebra spp?

Answer 5

Feline Ischemic encephalopathy

Question 6

How do you treat a Cuterebra infestation?

Answer 6

Removal of larvae

Question 7

What species are considered the accidental host of Cuterebra spp?

Answer 7

Dogs
Cats
Humans

Question 8

Why should Cuterebra spp be removed with caution?

Answer 8

Because it can cause anaphylaxis

Question 9

What is the definitve host of Hypoderma spp?

Answer 9

Cattle

Question 10

What is the common name of Hypoderma spp?

Answer 10

Warble fly, Heel fly, Gad fly

Question 11

What are the clinical signs of Hypoderma spp?

Answer 11

“Warbles” with 5 breathing holes present dorsal to lumbar spine

Question 12

What pathogenesis does Hypoderma spp cause?

Answer 12

Bovine hypodermosis

Question 13

How do you diagnose Hypoderma spp?

Answer 13

ID of third larval stage

Question 14

Is Hypoderma spp zoonotic?

Answer 14

Yes, it causes a similar cutaneous larva migrans and eosinophilic syndrome with fever, muscle pain

Question 15

What is the definitive host of Gasterophilus spp?

Answer 15

Horses

Question 16

What is the common name of Gasterophilus spp?

Answer 16

Equine Botfly

Question 17

What is the predilection site of Gasterophilus spp?

Answer 17

Oral cavity, then relocate to stomach

Question 18

What pathogenesis does Gasterophilus spp cause?

Answer 18

Horse gastrointestinal myiasis

Question 19

How do you treat Gasterophilus spp?

Answer 19

Ivermectin

Question 20

Is Gasterophilus spp zoonotic?

Answer 20

Yes. It causes stripes on skin resembling cutaneous larva migrans

Question 21

What is the definitive host of Ctenocephalides felis?

Answer 21

Cats
Dogs
Ferrets and small wild mammals

Question 22

What is the common name of Ctenocephalides felis?

Answer 22

Cat flea

Question 23

What pathogenesis does Ctenocephalides cause?

Answer 23

Diplyidium caninum
Pruritus
Plague
Acanthocheilonema reconditum

Question 24

How do you treat Ctenocephalides felis?

Answer 24

Products that contain Insect growth regulators

(Frontline plus, K9 Advantix

Question 25

Are Ctenocephalides felis zoonotic?

Answer 25

Yes they bite humans

Question 26

What is the predilection site of Ctenocephalides felis?

Answer 26

Tail head, neck, flanks

Question 27

What are the clinical signs of Ctenocephalides felis?

Answer 27

Anemia, alopecia, dermatitis

Question 28

How do you diagnose Ctenocephalides felis?

Answer 28

The presence of flea dirt and identification of fleas

Question 29

What is the most common flea of dogs and cats?

Answer 29

Ctenocephalides felis

Question 30

What is an infestation of fleas called?

Answer 30

Siphonapterosis

Question 31

What is the definitive host of Ctenocephalides canis?

Answer 31

Dogs

Question 32

What is the common name of Ctenocephalides canis?

Answer 32

Dog flea

Question 33

What pathogenesis does Ctenocephalides canis cause?

Answer 33

Dipylidium caninum Plague Acanthocheilonema reconditum

Question 34

What is the definitive host of Echidnophaga gallinacean?

Answer 34

Poultry Dogs Cats

Question 35

What is the common name of Echidnophaga gallinacean?

Answer 35

Sticktight flea

Question 36

What pathogenesis does Echidnophaga gallinacean cause?

Answer 36

``` Murine typhus Secondary bacterial infections Skin ulceration Anemia The plague ```

Question 37

What is the bacteria that causes the plague?

Answer 37

Yersinia pestis

Question 38

Is Echidnophaga gallinacean zoonotic?

Answer 38

Yes. Cases of attachment to a human are scarce

Question 39

What are the clinical signs of Echidnophaga gallinacean in birds?

Answer 39

Causes the eyes to swell shut

Question 40

What species of flies are considered to be obligatory myiasis?

Answer 40

``` Screw worm Cuterebra spp Hypoderma spp Gasterophilus spp Nasal bot fly ```

Question 41

What is an infestation of dipteran larvae known as?

Answer 41

Myiasis