Flashcards in Draschia megastroma/ Habronema spp/ Habronema majus Deck (22):
all horse species
what kind of nematode is this?
size of D. megastoma adult
what kind of buccal cavity fo Draschia megatoma have?
funnel shaped buccal cavity
What is the size of Harbronema spp?
what kind of buccal cavity do the harbronema spp. have?
cylindrical buccal cavity
are these parasites eggs thin or thick shelled?
is the life cycle direct or indirect?
what is the intermediate host for Draschia megatoma and Habronema muscae
what is the intermediate host for the habronema majus?
musca spp, stomoxys calcitrans
what animal is the intermediate host for all these species?
what is the site of infection
adults and larvae in stomach
L3 also in skin
larvae: cutaneous habronemiasis and cutaneous drashiasis, conjunctivitis
adults: nodules in stomach
larvae: "summer sores"
recovering of eggs in feces, difficult
larvae in skin scraping
MCL's, fly control
identification of eggs
thin shelled and larvated (paperclip) eggs
eggs collapse in feces
size of eggs
40-55 x 8-16 micrometers
what is the infective stage?
L3 larvae- inside of fly. fly can deposit larvae on host or the fly may be eaten by the host