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Parasitology Round 2 > Trematodes: Flukes > Flashcards

Trematodes: Flukes Flashcards

1
Q

Most common fluke in florida

Found in bile ducts of cats

A

Platynosomum concinnum “lizard poisoning fluke”

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2
Q

What are the 2 intermediate hosts of Platynosomum concinnum

A

Terrestrial snails

Anolis spp. lizards

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3
Q

Characteristics of the size of platynosomum concinnum

A

Small with parallel testies

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4
Q

What’s characteristic of the eggs of platynosomum concinnum

A

Operculated

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5
Q

Life cycle of platynosomum concinnum

A
  • Adults in bile duct of cats
  • Operculated eggs leave via feces
  • Eggs w/miracidium ingested by terrestrial snail
  • Miracidium Hatches (sporocyst - sporocyst cercariae)
  • Cercaria injested by 2nd IH
  • Metacercariae in bile ducts of lizard
  • Injested by cat
  • Excyst and migrate to bile ducts
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6
Q

Clinical signs of P. concinnum

A

Normally no severe disease
Chronic- biliary hyperplasia, liver failure
Temporary inappetence
Lizard poisoning

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7
Q

How do you diagnose P. Concinnum

A

sedimentation

Necropsy

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8
Q

Treatment of P. concinnum

A

None approved

Praziquantel

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9
Q

Where is Paragonimus kellicotti found

A

Lungs of dogs and cats

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10
Q

Who are the hosts of P. kellicotti

A

Mink/muskrat primary DH
IH: 1st - aquatic snail
2nd - crayfish or crab

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11
Q

Life cycle of P. kellicotti

A
  • Adults in lungs
  • eggs hatch in water
  • cercariae emerge from snail
  • Cercariae penetrate 2nd IH
  • 2nd IH ingested by DH
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12
Q

Clinical signs of P. kellicotti

A

Juvenile migration: pertionitis, pleural hemorrhage

Adults: chronic bronchitis, coughing, chronic eosinophilic granulomatous pneumonia

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13
Q

Diagnosis for P. Kellicotti

A

sedimentation
tracheal wash
radiography

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14
Q

Treatment for P. kellicotti

A

None approved

Praziquantel

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15
Q

Where is Nanophyetus salmincola most commonly found

A

Pacific northwest

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16
Q

Where does N. salmincola live in the host

A

Small intestine of fish eating animlas

17
Q

What are the hosts of N. salmincola

A

1st IH: aquatic snail

2nd IH: Fish

18
Q

Life cycle of N. salmincola

A
  • adults in intestine
  • cercaria emerge from snail
  • cercaria penetrate 2nd IH
  • 2nd IH ingested by DH
19
Q

Clinical signs of N. salmincola

A

Salmon poisoning

Enteritis, usually asymptomatic

20
Q

Diagnosis of N. Salmincola

A

sedimentation

21
Q

Treatment for N. salmincola

A

Praziquantel
Fenbendazole
Tetracyclines

22
Q

Where is heterobilharzia americana found in the DH

A

mesenteric and hepatic veins

23
Q

Where in the US is H. americana found

A

gulf coast

24
Q

What is the IH for H. americana

A

Aquatic snail

25
Q

Life cycle of H. americana

A
  • adults in terminal branches of mesenteric veins
  • cercariae emerge from snail
  • Cercariae penetrate skin of DH
26
Q

Clinical signs and pathogenicity of H. americana

A

Often asymptomatic
Significant liver and bowel wall pathology
CS: diarrhea, vomiting, weight loss, lethargy, anorexia, thirst, hypercalcemia

27
Q

What clinical signs happen with egg migration of H. americana

A

granulomatous inflammation

28
Q

Diagnosis of H. americana

A

sedimentation

29
Q

Treatment of H. americana

A

praziquantel

fenbendazole

30
Q

Where is Alaria spp. found in the DH

A

small intestine of dogs, cats

31
Q

IH of alaria spp

A

1st IH: Aquatic snail
2nd IH: tadpole
Transmammary transmission is possible

32
Q

Life cycle of Alaria spp.

A
  • adults in intestine
  • eggs hatch in water, penetrate snail
  • cercariae emerge from snail
  • cercariae penetrate 2n IH develop into mesocercariae
  • 2nd host ingested, some develop into metacercaria
33
Q

Clinical signs of Alaria spp

A

usually none

Pulmonary hemorrhage from lung migration

34
Q

Diagnosis of Alaria spp.

A

Sedimentation

35
Q

Treatment of Alaria spp

A

none approved

Praziquantal

Parasitology Round 2 (2 decks)

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