Oxyuris equi Flashcards Preview

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Flashcards in Oxyuris equi Deck (14):
1

order

oxyurida

2

common name

large pinworm

3

host

all horses

4

size of eggs

85 x 40- has operculum

5

adult characteristic

long white nematodes with pointed tails

6

adult size

10cm

7

life cycle

adults in dorsal colon
female lays eggs in perineum
eggs laid with gelatinous substance
eggs develop to contain L3
egg ingested with food or water
L3 lives in dorsal colon
develop to L4 in colon

8

direct or indirect life cycle?

direct

9

site of infection

large intestine

10

pathogenesis

pruritus

11

clinical signs

peri- anal irritation

12

diagnosis

perianal scraping method
adhesive tape

13

treatment

parasiticides

14

what is the infective stage?

L3 in egg