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5 - N -Trichuris spp - Enoplida

STUDY
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common name
whipworm
hosts
dogs and cats
ID adults
4-6 cm
thick posterior end tapering rapidly to a long filamentous anterior end (whip)
ID egg
lemon shape, yellow or brown in color
plug at both ends
80x35
Life cycle
direct
infective stage
L1 in egg
describe the life cycle
after the animal ingest the L1 in egg the plugs are digested and L1 penetrate glands of the cecal mucosa. All four molts occur. Adults emerge to lie on the mucosal surface with their anterior ends embedded. adults copulate, lay eggs, out in feces
survival rate of eggs in environment
several years under optimal conditions
PPP
6-12 wks
site of infection
cecum
pathogenesis
ususally asymptomatic
diphtheritic (leather like) inflammation of cecal mucosa
clinical signs
watery bloody diarrhea
diagnosis
Fecal float
Tx
anthelmintics - adults