Section 1
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Date created
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Cards (57)
Section 1
(50 cards)
FLUKES=
trematodes- liver fluke, intermediate host- snail, definitive host - cows, sheep
Feces don't have to be fresh nor refrigerated for 24 hours, TRUE or FALSE?
False, they do
ROUNDWORMS=
nematodes- eggs are larva passed in feces, transmitted by- mothers milk, ingestion, skin penetration, zoonotic
Define host?
a living being that offers an environment for maintenance of an organism
What are the seven types of classification?
Kingdom, Phylum, Class, Order, Family, Genus, Species
What species of tape worm causes hydatid cysts disease?
ecchinoccoccus
What are some clinical signs of dirofilarial immitis?
coughing, exercise intolerance, acute death
Define prepatent period?
the time interval between the infection with a parasite and the demonstration of that infection
Any parasite is considered to be pathogenic even if the host animal exhibits no signs of having a problem, TRUE or FALSE?
True
What type of ectoparasite can cause pruritus, alopecia, and anemia?
Ctenocephalides felis..... common in cat, dog, ferret
What method do we use to determine or detect endoparasites?
Fecal floats, direct smears, centrifuge, and sedimentation
What is a siphonaptera ectoparasite?
FLEA= flattened, wingless, powerful hind legs for jumping, intermediate vector for many roundworms and tapeworms
The most excruciating bite you can get in the summer in the mountains can be from?
Deerflies & Horseflies
What can it tell if the blood is dark/brown?
internal bleeding or clotted blood
What can it indicate if the blood is bright red?
recent traume
Define definitive host?
harbors the adult stage of a parasite
What are the two common groups of ectoparasites?
Phylum=Arthropoda, Class=Arachnida or Insecta
Obligate parasite
Must have host to survive (ex. louse)
What are some examples of class-arachnida?
Ticks, mites, and spiders. Have 2 body parts (head, abdomen) and 8 legs
Toxocara is classified as a roundworm, true or false?
true
Define mosquitoes?
they affect all animals, suck blood, can spread: malaria, yellow fever, west nile virus, and heartworms
This ectoparasite adult feeds on blood, saliva, tears, mucous?
FLIES
Define ectoparasites?
parasite that resides on the surface of its host
Define vector?
an organism that transfers disease causing organism to new host (ex.flea)
Define Zoonotic?
capable of being transmitted between animals and humans
Larval flies parasitizing animals are referred to as?
Bots (Cuterebra)
Define endoparasites?
parasites that resides in the hosts tissues
What are some clinical signs of ectoparasites?
Visible parasitic load, lethargy, dull coat, itchy skin, dehydration, anemia
Ixodid tick?
rhipicenphalis spp, brown dog tick, kennel, tick, intermediate host-ehlichia
What is known as the face and mouth flie?
Musca flie- feed on saliva, tears, and mucous (Livestock). Can transmit many viruses and bacteria
What are some collection methods used for ectoparasites?
immobilizing, skin scraping, cellophane tape, ear mite swab
What are some examples of class-insecta's?
Fleas, lice, flies, nats, ants, bees, wasps and mosquitoes. Have 3 body parts (head, thorax, abdomen) and 6 legs.
Define incubation period?
the period of time that the infectious disease in contracted to when symptoms being to appear
Define intermediate host?
shelters the asexual or immature parasite
Periodic parasite
Can live off host, needs host for nourishment but can periodically live on its own (ex. tick)
Define intermediate host?
a secondary host or intermediate host is a host that harbors the parasite only for a short transition period during which some development stage is completed
What is the intermediate host of dirofilarial immitis?
mosquito
TAPEWORMS=
cestodes- scolex (head), attaches to the wall of the intestine, may have suckers on scolex and rostellum
What is a parasite?
an organism that has adapted to live within a host, deriving nutrients from that host and ideally without killing it
The larvae can develop under the skin, in wounds, or inside of an organ, what is this called?
Myaisis
Dirofilaria is what?
nematode
What are some symptoms of endoparasites?
constipation, anorexia, blood in the stool, lethargy, dehydration, coughing, dyspnea
What are the vectors of deerflies and horseflies?
Anthrax and equine infectious anemia
What is the prepatent period of dirofilarial immitis?
6 months
Define a trematode?
leaf shaped, found in intestines, liver, and lungs, eggs passed in feces, and has many larval stages
What is an ectoparasite?
Resides on or in the skin, hair, or surface of the body of the host.
What does Endo refer to?
those living within the body, usually intestinal, sometimes in other organs (blood, heart, lungs, eyes, brain. etc.)
Define fomite?
is any object or substance capable of carrying infectious organisms, such as germs or parasites, and hence transferring them from one individual to another (door knob, sand, stethoscopes)
Define definitive host?
shelters the sexual or adult parasite
Psoroptes cuniculi?
ear canker mite of rabbits, live on surface of skin, eats tissues and fluids in ear, residue has a corn flake look
Section 2
(7 cards)