Trichinellids Flashcards
Trichinellids- bursate or non bursate?
non bursate
All male trichinellids have…
a single spicule except trichinella
Trichuris
whipworm
Anterior end of trichuris
long thin whip
Trichuris site of infection
adults live in mucosa of the cecum and colon
Zoonotic whipworms
T. trichuria and T. suis
Trichuris pathogenesis
physical damage to the cecal and colonic mucosa
hemorrhagic colitis and or typhilitis
hyperemic mucosa
All trichinellids lay eggs with ___ except Trichinella
bipolar plugs
Trichuris vulpis definitive host
dogs, foxes and rarely cats
Trichuris suis- what animal and lifestage is more susceptible?
young pigs
Feeder pig with profuse bloody diahrrea- what does it likely have?
Trichuris suis
Capillarids host
wide variety of vertebrates
Capillarids site of infection
based on species
Shape of capillarids
not whip shaped- small and thin with a stichosome
Trichuris vs Capillarid eggs
Capillarid eggs are smaller and have pitted shells
rare whipworms in the US
T. serrata and T. campanula
capillarid egg
Trichuris egg
What species of whipworm is never outside of a host animal?
Trichinella
Respiratory capillarids
E. bӧhmi and E. aerophilus
How to diagnose E. aerophilus
bronchial swab
Worms found in bladder mucosa
Pearsonema spp.
What species lays larvae
Trichinella spp.
Trichinella host
any mammal
Site of infection of Trichinella
Adults in small intestine
Juveniles in muscle
Zoonotic disease
Trichinellosis
Pearsonema spp. life cycle
indirect life cycle
eggs in urine
L1 develops in egg
L1 ingested by earthworms
earthworms ingested by DH
Trichinella nativa spread by eating
bear
Trichinella spiralis is maintained in
pigs and rats in temperate areas
Diactophyme renale DH
mink dogs wild canids
Kidney worm PH
frogs adn fish
Dioctophyme renale IH
aquatic annelids
Giant kidney worm location
eastern states, canada, OK and TX
