Flashcards in Quiz 6 Deck (92):
What is the genus name for a Whipworm?
What does the anterior vs posterior end of this worm look like?
anterior end is thinner than posterior
What kind of esophagus does trichuris have?
Which egg looks lemon or brown and is football shaped, with symmetrical bipolar plugs?
Is the trichuris resistant in the environment?
Which stage is the Trichuris infective?
Where are the adults of Trichuris located in the host
Which Trichuris spp is in dogs and foxes?
the symptoms of t. vulpis mimick what?
Addisons Dz-abnormal Na and K values
Is vulpis zoonotic?
Which spp of trichuris gives pigs catarrhal enteritis?
Which spp of trichuris occurs in ruminants?
Which two spp of Trichuris occur in cats?
serrata and campanula
Does T. discolor cause major ad frequent infections?
It does cause frequent but no major infections.
Dx of Trichuris?
FF, Fecal Ag ELISA
How do you control Trichuris? What do you need to remember about the eggs?
Tx soil then replant grass.
Eggs are resistant in environment
What whipworm has a barrel shape without symmetrical bipolar plugs and is not whip shaped?
Which capillaria occurs in dogs cats foxes and coyotes?
Where is c. aerophilia located at in the DH?
trachea, bronchi, nasal cavity, frontal sinus
Is C. aerophilia zoonotic?
yes, presents as bronchial carcinoma
What color is the C. aerophilia eggs?
Green tinge, and its not as smooth as whipworm
What is the life cycle of the C. aerophilia?
L1 ingested-intestines-lungs. Adults in lungs-coughed up-swallowed-removed in feces back as L1. The DH ingests
What is the facultative C. aerophilia facultative intermediate host?
Eartworm. L1 ingested by earthworm, DH eats the eartworm that has the L1 in it.
What spp is the C aerophilia more pathogenic in?
Foxes-cough, weakness, poor growth, death due to bronchopneumonia
Dx of C aerophilia?
Eggs found in sputum, feces or nasal discharge
How can you control C aerophilia?
Keep animals away from shaded areas where an earthworm might be
Where is Capillaria Pearsonema found in the body? and what is this dz called?
In the bladder
What are the spp and hosts urinary capillariasis found in?
What kind of Dx test would you run to see this capillaria plica/feliscati?
Life Cycle of Capillaria pearsonema?
Eggs in urine--L1, earthworm ingests, DH ingests earthworm that contains the L1. The egg has to be ingested by the earthworm for it to hatch from egg
Where is C. boehmi found in the DH? and what is the DH?
Nasal capillarasis-frontal sinus, nasal, paranasal sinus.
dog and fox
What is the Life cycle of c. (eucholeus) boehmi?
Dx of C. boehmi?
Feces, nasal wash-eggs covered in tiny pits
What is different about the way the Trichnella spiralis reproduce?
They are larviporous
female produce larvae NO EGGS
Who are the hosts for T. spiralis?
Pigs, HUMANS, rats, mammals
Where will you find adult/larvae T. spiralis in the host body?
Adults: Muscosa of SI
Larvae: Encysted in SM of IH
What is special and about the DH/IH of T spiralis?
the DH can also be an IH--pgs are cannibals!
What is the life cycle of T. spiralis?
DH ingests muscle that has encysted L1 larvae.
L1 liberated by digestive enzymes of DH and travel to SI
M n F mate (male dies after) female produces *prelarvae*
The prelarvae enter lymphatics-systemic
travel to Sk m, develop into L1 and encyst, wait until eaten by another host.
How can humans get T. spiralis?
eated raw/poorly cooked pork
What are the clinical signs of T. spiralis?
diarrhea, enteritis, fever, stiffness (duh, in sk m), muscle pain, dyspnea, eosinophillia, periorbital and facial swelling. Fatal for humans
nonpath in swine
Dx T. spiralis
life cycle? larviparous--so no eggs!!! and no life cycle part is in the enivronment
What is the scientific name for the giant kidney worm
Who is the direct host for D. renale?
but what else about the hosts?
but it is not host specific-dog, fox, wolf, cat, pig, horse, cattle.
which is large in d. renale, male or female?
How do the eggs of D renale look?
thick, pitted, barrel shapped, yellow-brown, bipolar plugs
How is D renale shed?
Urine!!! uuhh renal....urine...
Is there a kidney D. renale is most likely to affect?
Life cycle of D renale
renale...egg is passed in urine.
ingested by IH (oligochaete annelid)--develops in L3 in IH
IH ingested by DH or PH
L3 travels to Kidney-adult
Who is the paratenic host for D renale?
frogs, crayfish and fish
Clinical signs of D renale?
destruction of kidney
calification of parenchyma of kidney
uremia if they project in ureter
chronic peritonitis with adhesions
destroy the liver surface
What is the TX of D renale?
Nephrectomy, or surgerical removal of worms
What parasite has a bulb shaped esophagus, pointed tail and has a direct life cycle?
Where are the adults found of O equi in the DH?
Lumen of small colon, maybe large colon
What is different about the O equi eggs?
one operulum, unembryonated
What is the life cycle of O equi
Egg is ingested to SI, hatch, then move to colon.
What is special about elimination of O equi
They cement egg masses on the skin of the anus/perianal region. the fluid dries and cracks and flakes to ground and the eggs are ingested, hatch in SI and then move to colon
What are the clincial signs of O equi?
Intense pruritus, hair loss on tail, hyperkeratosis
DX o equi?
Scotch tape test
What is the order name that has facultative parasites?
What is the family were the females are the parasite
The females of strongyloides have what kind of eggs
Where are the males of strongyloides?
What is the name of the parasite of strongyloides were the hosts are primates and canids?
What is the name of the parasite of strongyloides were the hosts are cats (3)
felis, tumefacians, plaiceps
What is the name of the parasite of strongyloides were the hosts are ruminants
What is the name of the parasite of strongyloides were the hosts are equines?
What is the name of the parasite of strongyloides were the hosts are pigs?
Which strongyloides are zoonotic?
What occurs in humans if they get strongyloides?
What kind of reproduction do the females of stronyloides have?
Parthenogenetic-can develop without a male.
How is strongyloides transmitted?
Transmammary in most
Oral in cats
What stage of life is it most common to see a strongyloides infection?
Older are resistant
What is internal autoinfection of the human?
L1 can develop in digestive tract to L3 without passing into the environment
What external autoinfection?
L3 can start to pass out into feces and then re-infect by perianal penetration of skin
What is hyperinfection?
The extreme chronicity of infection and the explosive development of massive disseminated infection that may overwhelm P with depressed cell-mediated immunity
How do you Dx Strongyloides?
Baermann Technique-tunnel with bag of fresh poop so the larvae swim out, drown and sink.
You will see the rhabditiform larvae and infective filariform (long esophagus) L3.
Thelazia Lacrymalis host?
Where is T lacrymalis found in the host?
Conjunctival sac and lacrimal ducts, maybe aqueous humor
When will you see problems with Thelazia lacrymalis? and what will you see with it?
With heavy infections.
Progessive keratitis, ulceration and increased opacity of cornea which can lead to blindness
Diagnosis of thelazia lacrymalis?
Seeing the parasite in the eye. L1
What is the life cycle of Thelazia lacrymalis?
Embryonated eggshatch in the uturs of the worm
L1 travels to surface of the eye in horse-
L1 is picked up by a mucoid fly and the larvae develop into the infective L3 in the fly
L3 deposited around the eye of the horse by the fly
Develops into an adult
Thezalia californiensis host?
Who is the IH for Thezalia californiensis?
Muscoid Latrine Fly and Fruit Flies
Is T. californiensis zoonoitc?
Dx and and life cycle of T californiensis?
Same as T. lacrymalis
What is the host for Habronema?
Where in the host is the Habronema found?
rarely cecum and colon
What do the adults of the habronema look like?
Cylindrical buccal capsules
What does the egg of the Habronema look like?
Long, thin shelled embryonated.
"hot dog" shaped.
Life cycle of Habronema?
Adults produce eggs that hatch in the intestines OR feces
L1 ingested by maggots (larvae) of flies--Musca domestica and stomoxys
L1 to L3 by the time the adult flies emerge from pupa
L3 migrates to mouth of fly and escape when the fly feeds around the mouth lips or wounds of equines
How does the Habronema develop while in the DH
Fly is ingested, development of worms in the stomach
Larvae deposited in wounds-CUTANEOUS HABRONEMIASIS
Larvae develop in the eye-Ocular habronemiasis
Larvae enter the blood and travel to lung--Pulmonary Habronemiasis