Parascaris equorum Flashcards
1
Q
order
A
ascaridida
2
Q
host
A
all horses
3
Q
size of adults
A
30cm
4
Q
identification
A
large white nematodes with 3 lips
5
Q
ascarid egg is ___shelled
A
thick
6
Q
size of egg?
A
90 micrometers
7
Q
is life cycle direct or indirect?
A
direct and per os
8
Q
is there transmammary or transplacental transmission?
A
no
9
Q
PPP
A
2.5 months
10
Q
older animals can develop ____ to ascarids
A
immunity
11
Q
life cycle
A
L2 is swallowed, hatches in intestine
L2 burrows in wall of small intestine, liver, lungs
L2 develops to L3
L3 migrates to trachea, swallowed and develop to L4 migrate to small intestine
develop to adults, copulate, females lay eggs
12
Q
what is the infective stage?
A
L2 in egg
13
Q
site of infection
A
small intestine
14
Q
pathogenesis
A
perforation, intestinal obstruction, production losses
15
Q
clinical sings
A
coughing, unthriftiness, pot belly
