Parasitology

Front 1

T/F Trematodes have both male and female reproductive organs in every individual.

Back 1

You betcha

Front 2

What is the first intermediate host in the Trematode life cycle?

Back 2

Snail, either aquatic or land based

Front 3

what is the second intermediate host in trematodes?

Hint: there are 4 possibilities, 2 are two invertebrates and 2 vertebrates

Back 3

Invertebrates: Insect or crustacean

vertebrates: Amphibian or fish

Front 4

In Flukes, what are the two general steps in the life cycle which has one intermediate host?

Back 4

1. Cercaria penetrate definitive host

2. Cercaria encyst as metacercaria on vegetation and then are ingested by definitive host.

Front 5

Fasciola hepatica is commonly known as what? How many intermediates does it have?

Back 5

common liver fluke

1 intermediate host

Front 6

What are the hosts for the common liver fluke?

Back 6

Cattle and sheep

Front 7

In Fasciola hepatica, Which phase of infection has adults living in the bile ducts?

Back 7

Chronic phase

Front 8

What disease is associated with acute fascioliasis in sheep?

Back 8

Black Disease

Front 9

What are the treatments for common liver flukes?
How many times per year?
Do you treat cattle the same way you treat sheep?

Back 9

Cattle: Chlorsulon or albendazole
Twice a year
No approved treatment for sheep

Front 10

Fascioloides magna:

What domestic ruminants are natural hosts for this fluke?

Back 10

There are none. Natural definitive hosts are deer, elk, and moose.

Front 11

Fascioloides magna:

There are no signs in cattle, but sheep and goats often die from infection, why?

Back 11

Flukes are sequestered in cysts in the liver of cattle, but in sheep and goats, the adult worms continuously migrate producing hemorrhage and necrosis of the liver.

Front 12

Dirocoelium dendriticum:

what is the second intermediate host?

How does this host pick up the parasite and what form is it in?

Back 12

Ant

The ant ingests the CERCARIAE left in slime balls by snails

Front 13

Dirocoelim dendriticum:

Where do the adult flukes live?

What are the signs of infection? Why?

Back 13

Bile duct.

Usually no signs because the flukes do not penetrate the liver.

Front 14

Dirocoelium dendriticum:

What are the treatments?

Back 14

benzimidazoles

Front 15

Prostogonimus:

What are the definitive hosts and what are the two ntermediate hosts?

Back 15

Definitive: chickens ducks and pheasants

Intermediate: Aquatic snail and dragonfly nymphs.

Front 16

Is there a treatment for prosthogonimus and if so what is it?

Back 16

No satisfactory treatment

Front 17

What are the general stages of life cycles in trematodes.

Back 17

egg--miracidium--sporocysts--redia(not always, some times multiple)--cercaria--metacercaria

Front 18

Echinostoma revolutum:

What are the intermediate hosts?
Definitive hosts?
Treatments?

Back 18

snails--another snail,molluscs,planaria,fish,tadpoles

ducks, aquatic mammals, humans

praziquantal

Front 19

What is unique about the lifecycle of Echinostoma revolutum?

Back 19

It has two generations of rediae

Front 20

true or false:
all Tremetode eggs have an operculum.

Back 20

Big fat false

Front 21

Blood flukes:

What is unique about the reproduction of these flukes?

Back 21

the chick lives inside the dude. They are permanently getting it on. whoooooo

Front 22

How do blood flukes enter the definitive host?

Back 22

They penetrate through the skin

Front 23

What does Heterobilharzia americana cause?

Back 23

Swimmers itch

Front 24

Nanophyetus salmincola:

This parasite can have 1 or 2 intermediate hosts. If there are two, what is the second?

Back 24

mostly salmonid fish

Front 25

Neorickettsia helminthoeca is an organism related to Ehrlichia. What disease does it cause?
What are the signs?

Back 25

Salmon poisoning disease
Most obvious sign is enlarged lymph nodes

Front 26

What are the treatments for Salmon poisoning disease?

Back 26

oxytetracycline and praziquantel

Front 27

Paragonimus kellicotti:

What is the commom name of this fluke?
What is the second intermediate host?
How do the eggs get distributed?

Back 27

Lung fluke
Crayfish
eggs are coughed up, swallowed and transmitted in feces

Front 28

What is distinct about the radiagraphs of a dog with lung flukes?

Back 28

they have a chain-link appearance

Front 29

What is the treatment for lunkg fluke infestation?

Back 29

praziquanatel am fenbendazole

Front 30

Platynosomum concinnum has 2 intermediate hosts, what is the second?
What are the definitive hosts?
What is a major pathological manifestation of this fluke?

Back 30

Lizard or toad
cats and opossums
cirrhosis of the liver

Front 31

What is the second intermesiate host for Alaria?

Back 31

Tadpole

Front 32

what form of Alaria's lifecycle is ingested by the definitive host?

Back 32

mesocercariae

Front 33

Cestodes:

What is the free-swimming stage of the lifecycle called?

Back 33

coracidium

Front 34

Spirometra:

What is the first intermediate host?
what form develops in the first intermediate host?
What form develops in the second intermediate host?

Back 34

copepod
procercoid
plerocercoid

Front 35

What is the treatment for Spirometra?

Back 35

Praziquantel

Front 36

What genus of tapeworms causes the ever popular "scooting" in dogs?

How many intermediates does it have?

What is the form that develops in tissues of herbivores?

Back 36

Taenia
one
cysticerci

Front 37

Taenia multiceps is a tapeworm with an intereting effect on its intermediate host. What is the host and what is the effect?

Back 37

The hosts are sheep or goats.
The effect is progressive neurologic disease leading to circling, blindness, head-pressing, and death.