Trematodes

Question 1

Scientific name for lizard poisoning fluke

Answer 1

Platynosomum concinnum

Question 2

Platynosomum concinnum location in body

Answer 2

Bile duct

Question 3

Platynosomum concinnum geographic area

Answer 3

Florida

Question 4

Platynosomum concinnum intermediate hosts

Answer 4

1. Terrestrial snails
2. Anolis lizards
3. Pill bugs (paratenic hosts)

Question 5

Platynosomum concinnum definitive host

Answer 5

Cats

Question 6

Platynosomum concinnum infective stage

Answer 6

Metacercariae in bile duct of lizards

Question 7

Platynosomum concinnum clinical signs

Answer 7

Normally no severe disease

Can see biliary hyperplasia, liver failure, inappetance

Question 8

Platynosomum concinnum diagnosis

Answer 8

Sedimentation

Question 9

Platynosomum concinnum treatment

Answer 9

Praziquantel, espiprantel, fenbendazole, albendazole

Question 10

Scientific name for the lung fluke

Answer 10

Paragominus kellicotti

Question 11

Paragominus kellicotti geographic location

Answer 11

Eastern U.S.

Question 12

Paragominus kellicotti intermediate hosts

Answer 12

1. Aquatic snail

2. Crayfish or crab

Question 13

Paragominus kellicotti definitive host

Answer 13

Mink and muskrat (affects dogs and cats too)

Question 14

Platynosomum concinnum prepatent period

Answer 14

8-12 weeks

Question 15

Paragominus kellicotti prepatent period

Answer 15

3-36 days

Question 16

Paragominus kellicotti infective stage

Answer 16

Metacercariae in heart, liver, and muscles of crayfish or crabs

Question 17

Paragominus kellicotti reproduction

Answer 17

Preferred method is cross fertilization, pair in pleural cavity in cyst, but they are hermaphroditic

Question 18

Paragominus kellicotti clinical signs

Answer 18

Juvenile migration: peritonitis, pleural hemorrhage

Adults: chronic bronchitis, coughing, chronic eosinophilic, granulomatous pneumonia

Question 19

Is Paragominus kellicotti zoonotic?

Answer 19

Yes, can be asymptomatic or show same clinical signs as small animals

Aberrant migration to the brain is possible

Question 20

Paragominus kellicotti diagnosis

Answer 20

Sedimentation, tracheal wash, radiography

Question 21

Paragominus kellicotti treatment

Answer 21

Praziquantel, fenbendazole, albendazole

Question 22

Scientific name of the salmon poisoning fluke

Answer 22

Nanophyetus salmincola

Question 23

Nanophyetus salmincola location in host

Answer 23

small intestine

Question 24

Nanophyetus salmincola geographic location

Answer 24

Mainly Pacific northwest

Question 25

Nanophyetus salmincola intermediate host

Answer 25

1. Aquatic snail | 2. Fish (often trout or salmon)

Question 26

Nanophyetus salmincola definitive host

Answer 26

dogs, cats, coyotes, foxes, any fish-eating mammals

Question 27

Nanophyetus salmincola infective stage

Answer 27

Metacercariae in various tissues in fish

Question 28

Nanophyetus salmincola clinical signs

Answer 28

Possibly enteritis, usually asymptomatic

Question 29

What agent causes salmon poisoning?

Answer 29

Neorickettsia helminthoeca

Question 30

What are the clinical signs of salmon poisoning?

Answer 30

Fever, anorexia, vomiting, diarrhea, death | Hemorrhagic enteritis, lymph node enlargement

Question 31

Nanophyetus salmincola diagnosis

Answer 31

sedimentation

Question 32

Nanophyetus salmincola treatment

Answer 32

Praziquantel, fenbendazole, tetracyclines for N. helmintoeca

Question 33

What is the scientific name of the canine blood fluke?

Answer 33

Heterobilharzia americana

Question 34

Heterobilharzia americana location in host

Answer 34

Mesenteric and hepatic veins

Question 35

Heterobilharzia americana geographic location

Answer 35

Gulf coast, Louisiana bayou, Mississippi delta

Question 36

Heterobilharzia americana intermediate host

Answer 36

1. Aquatic snail

Question 37

Heterobilharzia americana definitive host

Answer 37

Dog, bobcat, racoon

Question 38

Heterobilharzia americana eggs

Answer 38

No operculum

Question 39

Heterobilharzia americana infective stage

Answer 39

Cercariae in water penetrate skin of definitive host

Question 40

Heterobilharzia americana prepatent period

Answer 40

60 days

Question 41

Heterobilharzia americana clinical signs

Answer 41

Diarrhea, vomiting, weight loss, lethargy Can cause significant liver and bowel pathology Skin irritation from cercariae penetration

Question 42

Heterobilharzia americana diagnosis

Answer 42

Sedimentation

Question 43

Heterobilharzia americana treatment

Answer 43

Praziquantel, fenbendazole

Question 44

Is Heterobilharzia americana zoonotic?

Answer 44

Yes, can cause "swimmer's itch"

Question 45

Alaria spp. location in host

Answer 45

small intestine

Question 46

Alaria spp. intermediate host

Answer 46

1. aquatic snail 2. tadpole 3. paratenic hosts

Question 47

Alaria spp. definitive host

Answer 47

Dogs and cats

Question 48

Alaria spp. infective stage

Answer 48

Mesocercariae, which develop into metacercariae | if lactating queen affected, mesocercariae migrates to mammary glands to affect kittens

Question 49

Alaria spp. clinical signs

Answer 49

usually none | pulmonary hemorrhage from migration into lungs

Question 50

Alaria spp. diagnosis

Answer 50

sedimentation

Question 51

Alaria spp. treatment

Answer 51

Praziquantel, epsiprantel, fenbendazole