Week Three: Chapters 6, 7, 8

Question 1

In the subclass monogenea, who do these usually parasitize?

Answer 1

Fish, amphibians, and reptiles

Question 2

In the subclass digenea, who do these usually parasitize?

Answer 2

Wild and domestic animals and humans

Question 3

What do flukes look like?

Answer 3

Unsegmented, leaf life

Question 4

The mouth of a fluke is surrouneded by a muscular oral sucker called…

Answer 4

Acetabulum

Question 5

What do flukes not have that most parasites have?

Answer 5

Anus, they regurgitate contents back into the tissues or organs they infect

Question 6

Are flukes are _____ except for the blood fluke, schistosomes.

Answer 6

Hermaphroditic

Question 7

What do operculated eggs look like on a fluke?

Answer 7

Oval, door on one side

Question 8

What are is the phylum, class, sublclass of flukes?

Answer 8

Phylum: Platyhelminthes
Class: Trematoda
Subclass: Monogenea/Digenea

Question 9

Platynosomum fastosum:

Host, location of adult, intermediate host, transmission route, common name

Answer 9

Host: Cats
Location of adult: Bile ducts
Intermediate host: (first) Land snail, (second) lizard
Transmission route: Ingestion of infected lizard
Common name: Lizard poisoning fluke of cats

Question 10

What are some clinical signs of Platynosomum fastosum?

Answer 10

Diarrhea, vomiting, icterus, death from obstruction of bile duct

Question 11

Nanophyetus salmincola:

Host, location of adult, intermediate host, transmission route, common name

Answer 11

Host: Dogs
Location of adult: Small intestine
First intermediate host: Freshwater snail
Second intermediate host: Salmon
Transmission route: Ingestion of infected salmon
Common name: Salmon poisoning fluke of dogs