RUSVM Parasitology Exam 2 Review TA Session Flashcards
Which trematod casues “pipstem liver”?
fasciola hepatica
What is the fecal diagnostic test for trematodes?
sedimentation - large and heavy eggs
Which is the false statement:
a. tapeworms with arthropod IH have cysteicervus larval stages
b. tapeworms with mammal IH have cyticercus larval stages
c. tapeworms with arthropod IH have cysticercoid larval stages
a.
Choos the correct statement about taenia solium
a. huamns as FH can have NCC and as IH can have taeniosis
b. humans as FH can have taeniosis and as IH can have NCC
C. Pigs as FH can have taeniosis and as Ih can have NCC
D. Pigs as FH can have NCC and as IH can have taeniosis
b.
What is the fly life cycle?
ELPA
Which are not zoonotic
a. alaria spp,
b. fascioloides magna,
c. paragnoimus kellicotti,
d. paramphistomum spp,
e. fasciola hepatica,
f. nanophyets salmincola,
g. dicrocelium spp.
b and d
Diphyllobothrium latum and spirometra spp use 2 iH’s? T/F
true
Which of teh following are Railietina spp eggs? (pictures)
B.
Anoplocephala magna is a long cetode in the small intestine of horses. BEcause of its size, it is considered more pathogenic than A. perfoliata. T/F
B. False,
Which adult flies take blood meals?
a. culicodes
b. haemotobia irritans
c. meophagus ovinus
d. musca spp.
e. stomoxys calcitrans
f. tabanas and Chrysops
a b c e f
Humans are IH for both taenia saginata and taenia solium T/F
False- humans intermediats for taenia solium, they act as final hosts
You get a call from a small ruminenat owner. When you arrive, he complains of his lambs eing unthrifty. He also shows you the following (piture). What tapeworm are you thinking and can yous say with confidence that these segments are the cause of the issue?
b. moniezia spp.; no
Fascioloides magna has several hosts. The natural FH is a white-tail deer. aberrant hosts die because the cysts occlude the bile ducts. t/f
True
Which of the following can have this egg? (picture)
taenia, echinococcus
When is the best time to treat Hypoderma?
treat the first instar prior to overwintering
Of the echinoccous spp., which can cause exogenous cysts in human livers, thus resulting in death?
multiocularis spp.
Which of the following infects dogs and cats?
a. paramphistomum spp.
b. taenia solium
c. choanotaenia spp.
d. paragonimus kellicotti
e. fasciola hepatica
a.
Bot fly larvae are obligatory parasites. T/F
a. true
Match the tick species with its picture.
a;lskjf;alskdjf
All trematodes only have one IH, the snail. T/F
b. false- some have 2 IH
You work as a mixed animal practice. THis fine ay, it starts to rain as you head out to a catle ranch. When you arrive, you notice a few cattle are irritated. Upon further spieciation , you see flies located on teh vntral belly. WHat s your DX?
horn fly
After you finish at the cattle ranch, you had out to a small ruminant farm. The farmer complains about a tick issue with his sheep. When you part the wool, indeed you see a critter without wings and a flattened shape. Is this a tick?
b. no- sheep head fly
Name the dead-end host of fascioloides magna
bovine
Which of the following is mismatched?
a. avian flea is Echidnophaga
b. avian lice is Ischnocera
c. avian ticks are hard ticks
C.
Choose the tick with long palps.
a. amblyomma
b. dermacentor
c. ixodes
d. rhipicephalus
e. phipicephalus ( boophilus)
a, c
choose the correct matching option a flukes= trematodes b. flukes = cestodes c. tapeworms= trematodes d. tapeworms= cestodes
a, d
Select the bot flies.
a. cochliomyia hominovrax
b. cuterebra spp.
c. culicoes spp.
d. haematobia irritans
e. hypooderma spp. g. gasterophilus spp.
g. tabanus and chrysops
h. melophagus ovinus
i. oestrus ovis
j. stomoxys calcitrans
b e f g i
You go out to a barn to groom horses. When you enter the stall, you notice a few flies around the eyes. Which fly are you thinking about?
musca autumnalis
Which hard tick is reportable?
boophilus
When treating dirofilaria immitis infections what is the first step?
prophylaxis and doxycycline
Clinical signs for dirofilaria immitis are seen in dogs (blank) of age and their severity is determined by (blank).
over 6 months, activity level
The hallmark of Ancanthocheilonema reconditum in a blood smear is (blank).
fast movement
The IH for Onchocerca cervicalis is (blank) and its predilection site is (blank).
no- see- ums (biting midges or culicoides), nuchal ligament
What parasite lays this egg and may cause osteopathy?
spirocerca lupi
The IH for Draschia megastoma and Harbonema spp. is (blank).
musca spp. and stomoxys calcitrans
Which of the following have an arthropod IH?
Moniezia spp., Raillietina spp.
The life cycle of Dipylidium caninum is synchornized to (blank).
fleas
Which of following can have humans as the IH and FH?
taenia solium
Which of the following clinical signs is associated with Taenia pisiformis?
none of the above
Humans become infectd with Taenia saginata by (blank)
ingesting under cooked beef
The 2nd larval stage for Taenia taeniaformis is (blank) and is found in the (blank).
strobilocercus, liver
How do humans get neurocycticercosis?
ingesting human fecal material containing t solium oncospheres
Echinococcus multilocularisis potentially fatal in humans because…
It can cause a liver cyst that can invade surrounding tissues
Which of the following are Pseudophyllidean cestodes?
Diphyllobthrium latum, Spirometra spp.
Teh first IH for pseudophyllidean cestodes i?
copepods
Which fluke is a vector for Neorickettsia helminthoeca?
nanophyetus salmincola
Which of the following is not zoonotic?
a. fasciola hepatica
b. fascioloides magna
c. paramphistomum spp.
b and c
What the primary lesion associated with Fasciola hepatica?
pipestem fibrosis in the liver
Fascioloides magna causes death most often in :
cattle, white tailed deer, goats, bison
goats
Which of the following is reportable in Kansas?
a. cochliomyia hominivorax
b. . sarcophagidae
c. rhipicephalus annulatus
a and c ( doesn’t matter which state you are in, they are still reportable)
The bluish green, striped fly was found on a dead sheep with a foul smelling lesion in Wyoming. What is your next step as a veterinarian.
report it
What attracts adult female Sarcophagidae to lay first instars?
necrotic wounds
which of the following are Ischnocerca Lice?
a. ctenocephalides felis
b. haemotopnius suis,
c. linognathus ovillus
d. damalinia ovis
d.
trichodectes canis is an IH of (blank)
D. caninum
Damalinia bovis proliferates during which season?
winter
Which of the following is the most pathogenic sheep lice?
damalinia ovis
Which of the following likes to form dense clusters on the hides of cattle?
Haematopinus eurysternus, linognathus vituli
Which of the following is the pupa of Ctenocephalides felis? (picture)
B.
The flea is found on (blank) and it is commonly known as (blank). –Picture
birds, sticktight flea
You find this tick on a dog at your clinic. What disease should you warn the owners to watch for? (picture)
lyme disease
Which of the following is a one host tick?
rhipicel
What is the prepatent period for Dirofilaria immitis?
6-9 months
Cattle become infected with liver flukes via which route
Ingestion of infected aquatic plants
Adult flies generally cause what condition especially in livestock?
fly worry
A horse present to you with severe pruiritis on the neck and withers. You decide to perform a skin biopsy to examine. What life stage of which parasite are you likely to find?
Mff; o. cervicalis
How would you differentiate between Choaenotaenia spp. and Raillientina spp. infections in poultry?
Rallientina causes nodular tape worm disease
Upon necropsy of a horse, you find an ileocecal intussusception and very large flat yellowish worms. Which species is this most likely?
anoplocepha spp
in general, clinical signs associated with Linognathus spp. and Haematopinus spp. include:
puritis, dermatitis, anemia
Pathogenicity in milk tapeworm infections is generally seen in what kind of host?
young lambs and kids
This nematode is generally nonpathogenic, although in heavy infections adults can cause diptheritic inflammation of the cecal mucosa leading to watery and sometimes bloody diarrhea.
trichuris spp.
This bacteria likes to live symbiotically with heartworms and is believed to contribute towards it pathogenicity.
woolbachia
A cat presents with a nonhealing wound on its hcest that seems to be leaking a clear fluid causing the area around it to become crusty and matted. Which specie si this most likely?
Cuterbra spp.
The most important aspect of heartworm treatment in dogs is?
owner compliance and cage rest
Blowfly striek refers toa reportable condition caused by whcih species?
cochilomyia
which ticks are causes of tick paralysis?
ixodes spp., dermacentor spp., amblyomma spp
Which species of ticks transmit lyme disease?
ixodes spp.
This taenia species has a strobiocercus for a mestacestode stage
t. taeniaformis
both cuterebra spp. and oestrus ovis are associated with aberrant larval migration into the cerebral cavity. t/f
True
Adult tapeworms are usually found in the large intestine and are mostly non-pathogenic except in heavy infections. T/F
False
Most effective form of control of both T. Solium and T. Saginata infections is what?
consumer education and meat inspection
Sarcophagidae flies produce maggots that feed on what kind of flesh?
dead or necrotic flesh
In the final hosts for F. Magna, a cyst forms around the flukes and arrests the migration preventing their pathogenicity. T/F
True
Which life stage of trematodes are infective for the final host?
metacercera
This nematode generally causes regurgitation and resultant anorexia and emaciation but is nown to causes osteosarcomas, osteophathy and spondylosis
esophageal worm
“closecaval- syndrome” is seen is what sort of infections with heart worm?
heavy infections
Treatment of the rikketsial organism transmitted by N. Salminocola is what drug?
tetracycline
Capillaria spp. are mostly non pathogenic in dogs and cats and can be found in feces. T/F
False
what is the infective stage for Spirocerca lupi?
L3 in Ih/Ph
Which of these cestodes are zoonotic?
T. crassceps
Which of these species uses a livestock (usually sheep) intermediate host?
T. hydatigena
Paragonimus kellicotti causes what pathogenicity
nodules in lung parnechyma
on inspections of the sublingual region fo apig, small nodules are noted. WHat lifestage and parasite is this most likely?
Cysteicercus, T. solium.
All Ischnoceran lice generally have similar clincal signs, including: puritis, dermatitis, alopecia, erythema, self-mutation sounds, sometimes leading to loss of condition.
a
Physaloptera spp. is free living within the stomach, has an infective L1, and is largely non-pathogenic. T/F
False
