Obligatory Myiasis Flashcards
What is the definitive host of Cuterebra spp?
Rodents and rabbits
What is the common name of Cuterebra spp?
Rodent bot fly
What is the predilection site of Cuterebra spp?
SQ tissue
What is the route of transmission of Cuterebra spp?
Enters via body opening
oral, nasal, ocular, open wound
What is the pathogenesis of Cuterebra spp?
Feline Ischemic encephalopathy
How do you treat a Cuterebra infestation?
Removal of larvae
What species are considered the accidental host of Cuterebra spp?
Dogs
Cats
Humans
Why should Cuterebra spp be removed with caution?
Because it can cause anaphylaxis
What is the definitve host of Hypoderma spp?
Cattle
What is the common name of Hypoderma spp?
Warble fly, Heel fly, Gad fly
What are the clinical signs of Hypoderma spp?
“Warbles” with 5 breathing holes present dorsal to lumbar spine
What pathogenesis does Hypoderma spp cause?
Bovine hypodermosis
How do you diagnose Hypoderma spp?
ID of third larval stage
Is Hypoderma spp zoonotic?
Yes, it causes a similar cutaneous larva migrans and eosinophilic syndrome with fever, muscle pain
What is the definitive host of Gasterophilus spp?
Horses
What is the common name of Gasterophilus spp?
Equine Botfly
What is the predilection site of Gasterophilus spp?
Oral cavity, then relocate to stomach
What pathogenesis does Gasterophilus spp cause?
Horse gastrointestinal myiasis
How do you treat Gasterophilus spp?
Ivermectin
Is Gasterophilus spp zoonotic?
Yes. It causes stripes on skin resembling cutaneous larva migrans
What is the definitive host of Ctenocephalides felis?
Cats
Dogs
Ferrets and small wild mammals
What is the common name of Ctenocephalides felis?
Cat flea
What pathogenesis does Ctenocephalides cause?
Diplyidium caninum
Pruritus
Plague
Acanthocheilonema reconditum
How do you treat Ctenocephalides felis?
Products that contain Insect growth regulators
(Frontline plus, K9 Advantix
Are Ctenocephalides felis zoonotic?
Yes they bite humans
What is the predilection site of Ctenocephalides felis?
Tail head, neck, flanks
What are the clinical signs of Ctenocephalides felis?
Anemia, alopecia, dermatitis
How do you diagnose Ctenocephalides felis?
The presence of flea dirt and identification of fleas
What is the most common flea of dogs and cats?
Ctenocephalides felis
What is an infestation of fleas called?
Siphonapterosis
What is the definitive host of Ctenocephalides canis?
Dogs
What is the common name of Ctenocephalides canis?
Dog flea
What pathogenesis does Ctenocephalides canis cause?
Dipylidium caninum
Plague
Acanthocheilonema reconditum
What is the definitive host of Echidnophaga gallinacean?
Poultry
Dogs
Cats
What is the common name of Echidnophaga gallinacean?
Sticktight flea
What pathogenesis does Echidnophaga gallinacean cause?
Murine typhus Secondary bacterial infections Skin ulceration Anemia The plague
What is the bacteria that causes the plague?
Yersinia pestis
Is Echidnophaga gallinacean zoonotic?
Yes. Cases of attachment to a human are scarce
What are the clinical signs of Echidnophaga gallinacean in birds?
Causes the eyes to swell shut
What species of flies are considered to be obligatory myiasis?
Screw worm Cuterebra spp Hypoderma spp Gasterophilus spp Nasal bot fly
What is an infestation of dipteran larvae known as?
Myiasis