Parasitology Flashcards
What kind of lifecycle do heartworms have?
indirect
What is the intermediate host of heart worms?
misquitoes
What is Dirofilaria immitis?
heartworm
What is the prepatent period of heartworm disease?
6-9 months
How long do adult heartworms live?
5 years
How long can microfilariae live in the bloodstream?
up to 2 years
When do you have the best chance to discover microfilariae?
if blood sample is taken at night (they’re nocturnal)
What kind of life cycle do tapeworms have?
indirect
What on the tapeworm absorbs nutrients?
scolex
Taenia sp is really _____
geometric
What kind of tapeworm likes neural tissue?
Echinococcus spp.
What is the intermediate host of dipylidium?
flea
What species is commonly infected with Taenia spp?
cat
Where are liver flukes found?
in and around bile ducts, sometimes attached to the liver
What are the intermediate host for liver flukes?
snails
Scientific name for liver flukes.
Fasciola hepatica
It is _____ to find eggs of a fluke.
difficult
What kind of lifecycle does the fluke have?
indirect
What do liver flukes consume?
blood
T/F. Coccidia is an intermittent shedder.
true
What species is susceptible to coccidia?
bunnies
Which life stage of coccidia is commonly identified?
oocyst
How is coccidia transmitted?
ingestion of infected feces
Which life cycle requires an intermediate host?
indirect
T/F. All parasites do some degree of damage to the host.
true
Three “keys: to parasitism.
Adaptions to
- live
- reproduce
- infect new host
The two major groups of ectoparasites are:
insects and arachnids
Insects have ___ legs as adults and arachnids have ___ legs as adults.
six/eight
Ticks belong to two major groups, ____ or “hard” ticks and ______ or “soft” ticks.
ixodidae/argasidae
One disease that is transmitted to dogs by the common deerk tick is:
lyme disease
T/F. Paralysis is a potential danger for dogs that have been subjected to tick bites.
True
Otobius is commonly called the:
spinose ear tick
_____ is the scientific name for the “flea”
Ctenocephalides sp
The flea is an ___.
insect
T/F. “ear mites” are insects.
false
Scientific name for “ear mite”.
Otodectes cynotis
Lice are divided into two major groups based on anatomy, those types are _____.
biting/suckingq
The “deer tick” is implicated in this zoonotic diease.
lyme
The intestinal phase of which disease only happens in cats?
Toxoplasma gondii
Equine Protozoal Myeloencephalitis has an affinity for what kind of tissue?
neural
What causes EPM?
Sarcocystis neurona
What is EPM’s definitive host?
opossum which gets it from bird
T/F. The horse is a dead end host for EPM.
true
Examples of insects.
flea, fly, mosquito, lice
Examples of arachnids.
mites, ticks
Sarcoptes sp is?
scabies mite
T/F. Scabies females burrow into the skin.
true
Mallophaga lice do what?
biting/chewing
Anoplura lice do what?
sucking
Haematopinus suis.
hog louse
Linognathus setosus.
canine sucking louse
Gliricola porcelli.
guinea pig lice
Haematopinus asini.
horse sucking louse
Dermatobia hominis.
human bot fly
Gasterophilus spp.
horse bot
If you have too many horse bots they can rupture what?
stomach
Trichenella spiralis
trichina worm
What does Trichostrongylus spp inhabit?
abomasum and occasionally the small intestine
