strongyloides stercoralis

Question 1

strongyloides stercoralis morphology

Answer 1

small thread-like worms in small intestine
ONLY FEMALES PARASITIC
-parthenogenesis

Question 2

parthenogenesis

Answer 2

lay fertilized eggs w/o males
how they reproduce

Question 3

strongyloides stercoralis biology

Answer 3

direct lifecycle
-homogonic lifecycle w parthenogenic females
-heterogonic lifecycle w free living male and female worms
transmit via lactogenic, ingestion, autoinfection

Question 4

homogonic cycle

Answer 4

only adult female worms parasitic
reproduce parthenogenically
lactogenic transmission to pups
autoinfection within pups
-accumulation of sig worm population in short period
coughing precedes diarrhea
zoonotic potential

Question 5

heterogonic cycle

Answer 5

free living adult worms reproduce sexually
transmission to susceptible host
some remain in environment to continue this lifecycle
these worms come from infected animals and free-living cycle
zoonotic

Question 6

strongyloides stercoralis clinical importance

Answer 6

primarily in puppies, immuno-naive
-watery diarrhea, dehydration, death
-verminous pneumonia

Question 7

strongyloides stercoralis diagnosis

Answer 7

1st stage larvae diagnostic product
-direct smear
-larvated eggs float on fecal

Question 8

strongyloides stercoralis treatment/ prevention

Answer 8

removal or worms in gut (EXTRA LABEL)
-IVM and FBZ
nothing effective for tissue stages
clean kennel/ environmental hygiene