Metastrongyloidea
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Questions and Answers

What are the general characteristics of Superfamily Metastrongyloidea?

Indirect life cycle, snail or slug IH, Infective L3 found inside intermediate host, Diagnose via Baermann , diagnostic stage is L1 with kinked tail, bursated males, small buccal capsule

What is the diagnostic test and diagnostic stage for Superfamily Metastrongyloidea, respectively?

  • Sedimentation, L1
  • Baerman, L3
  • Sedimentation, L1
  • Baerman, L1 (correct)

Which parasite of Superfamily Metastrongyloidea is the exception to the indirect life cycle?

Filaroides spp.

Which parasite of Superfamily Metastrongyloidea is the exception for the diagnostic stage?

<p>Crenosoma vulpus</p> Signup and view all the answers

List all of the parasites in Superfamily Metastrongyloidea (Hint: 8)

<p>Muellerius, Parelephostrongylus tenuis, Metastrongylus spp, Aelurostrongylus abstrusus, Filaroides osleri, Filaroides hirthi, Angiostrongylus vasorum and Crenosoma vulpis</p> Signup and view all the answers

Street name for Muellerius spp?

<p>Lung worm</p> Signup and view all the answers

Final host of Muellerius spp

<p>Shoats</p> Signup and view all the answers

Intermediate host of Muellerius spp

<p>Mollusks</p> Signup and view all the answers

PPP of Muellerius spp?

<p>6-10 weeks (D)</p> Signup and view all the answers

LC of Muellerius spp?

<p>Indirect, infective L3 in IH</p> Signup and view all the answers

Predilection site of Muellerius?

<p>Lung tissue</p> Signup and view all the answers

What is the pathogenesis of Muellerius?

<p>Lead shot lungs</p> Signup and view all the answers

How do you diagnose Muellerius?

<p>Baerman, L1 with kinked tail</p> Signup and view all the answers

CS of Muellerius spp?

<p>Pneumonia rare in sheep, heavy infections worse in goats (usually no CS)</p> Signup and view all the answers

Street name for Parelaphostrongylus?

<p>Meningeal worm</p> Signup and view all the answers

Who is the final host of Paelaphostrongylus?

<p>White tailed deer</p> Signup and view all the answers

Who is/are the abberant hosts of Parelaphostrongylus?

<p>Horse, camel, llama, shoats</p> Signup and view all the answers

Who is the IH of Parelaphostrongylus?

<p>Mollusks</p> Signup and view all the answers

LC of Parelaphostrongylus ?

<p>Indirect, infective L3 in IH</p> Signup and view all the answers

Both FH and Aberrant hosts experience CS such as staggering, circling etc

<p>False (B)</p> Signup and view all the answers

The FH for Parelephostrongylus is in balance with their parasite so no CS are seen

<p>True (A)</p> Signup and view all the answers

In the aberrant host of Parelaphostrongylus, the worms don’t usually develop into adults

<p>True (A)</p> Signup and view all the answers

How do you attempt to diagnose a patient with Parelaphostrongylus?

<p>By CS and if you see white tailed deer around</p> Signup and view all the answers

What is the tx for Parelaphostrongylus?

<p>None</p> Signup and view all the answers

What is the Street name for Metastrongylus?

<p>Lungworm of pigs</p> Signup and view all the answers

Who is the FH of Metastrongylus ?

<p>Pigs</p> Signup and view all the answers

At what age are pigs most affected by Metastrongylus?

<p>It is severe in pigs who are 4-6 months</p> Signup and view all the answers

Who is the IH for Metastrongylus ?

<p>Earthworm</p> Signup and view all the answers

How do you ID Metastrongylus?

<p>They are white slender worms; egg with L1 inside irregular “shell”</p> Signup and view all the answers

What is the PPP for Metastrongylus?

<p>28 days (A)</p> Signup and view all the answers

LC of Metastrongylus?

<p>Indirect with infective L3 inside host</p> Signup and view all the answers

What is the predilection site of Metastrongylus?

<p>Bronchi and bronchioles</p> Signup and view all the answers

Describe the pathogenesis of Metastrongylus

<p>Will have lesions from lung migration, bronchitis, and secondary infections</p> Signup and view all the answers

What are the CS of Metastrongylus?

<p>Coughing and bronchitis</p> Signup and view all the answers

How do you diagnose Metastrongylus ?

<p>Fecal to find eggs with L1 inside</p> Signup and view all the answers

How do you treat Metastrongylus?

<p>Anthelmintics</p> Signup and view all the answers

What is the street name for Aeulurostrongylus?

<p>Cat lung worm</p> Signup and view all the answers

Who are the PH for Aelurostrongylus?

<p>Birds, rodents, frogs- things outdoor cats can hunt and eat</p> Signup and view all the answers

Who is the intermediate host of Aelurostrongylus?

<p>Snail, slugs</p> Signup and view all the answers

What is the LC of Aelurostrongylus?

<p>Indirect with infective L3 in IH or PH</p> Signup and view all the answers

What is the predilection site of Aelurostrongylus?

<p>Lung parenchyma, bronchioles</p> Signup and view all the answers

What is the pathogenesis of Aelurostrongylus ?

<p>Gray nodules in lungs due to females laying eggs in lung parenchyma</p> Signup and view all the answers

What are the clinical signs of Aelurostrongylus?

<p>Chronic mild cough</p> Signup and view all the answers

How do you diagnose a patient with Aelurostrongylus?

<p>Baerman, L1 with kinked tail, necropsy for adults in lungs and nodules</p> Signup and view all the answers

How do you treat for Aelurostrongylus?

<p>Prevent access to IH and PH</p> Signup and view all the answers

Outdoor cats are the safest from Aelurostrongylus

<p>False (B)</p> Signup and view all the answers

What’s the street name for Filaroides osleri?

<p>Lungworm</p> Signup and view all the answers

Who is/are the final hosts of Filaroides osleri?

<p>Dogs</p> Signup and view all the answers

What is the PPP for Filaroides Osleri?

<p>6-7 months (C)</p> Signup and view all the answers

What is the LC of Filaroides osleri?

<p>Direct with infective L1</p> Signup and view all the answers

The infective stage in Filaroides osleri is L3

<p>False (B)</p> Signup and view all the answers

What is the predilection site of Filaroides osleri?

<p>Trachea and bronchi</p> Signup and view all the answers

What is the pathogenesis of a dog with Filaroides osleri?

<p>Hemorrhagic or granular nodules in trachea or bronchi</p> Signup and view all the answers

Filaroides osleri is most prevalent in ___ dogs mostly in ____

<p>Filaroides osleri a is most prevalent in young dogs mostly in breeding/lab facilities</p> Signup and view all the answers

What are the CS of Filaroides osleri?

<p>Dry, nonproductive cough</p> Signup and view all the answers

There will be clinical signs seen at around 4 months old

<p>False (B)</p> Signup and view all the answers

Describe the transmission of Filaroides osleri.

<p>Transmission is from mother’s saliva, feces, or regurgitated stomach contents</p> Signup and view all the answers

How do you diagnose a patient with Filaroides osleri?

<p>Baerman , L1 with kinked tail and/or bronchoscope for nodule</p> Signup and view all the answers

How do you treat a patient with Filaroides osleri?

<p>BZD can reduce levels but there’s a persistent problem in kennels</p> Signup and view all the answers

Who is the FH for Filaroides Hirthi?

<p>Dogs</p> Signup and view all the answers

What is the PPP for Filaroides Hirthi?

<p>5 weeks (C)</p> Signup and view all the answers

What is the LC for Filaroides Hirthi?

<p>Direct with infective L1</p> Signup and view all the answers

Where is the predilection site of Filaroides Hirthi?

<p>Lung parenchyma</p> Signup and view all the answers

What is the pathogenesis of Filaroides hirthi?

<p>Adults encyst in lung parenchyma, more prevalent in young dogs in beagle colonies</p> Signup and view all the answers

CS oof Filaroides Hirthi?

<p>Dry, nonproductive cough</p> Signup and view all the answers

How do you diagnose a patient with Filaroides hirthi?

<p>Baerman, L1 with kinked tail</p> Signup and view all the answers

How do you prevent Filaroides hirthi?

<p>Just by management</p> Signup and view all the answers

What is the street name for angiostrongylus vasorum?

<p>French heartworm</p> Signup and view all the answers

Who is/are the final host of Angiostrongylus vasorum?

<p>Foxes preferred, older hunting dogs susceptible</p> Signup and view all the answers

Who is IH for Angiostrongylus vasorum?

<p>Snail</p> Signup and view all the answers

What is the PPP for angiostrongylus vasorum?

<p>28-108 days (B)</p> Signup and view all the answers

What is the LC of Angiostrongylus vasorum?

<p>Indirect, infective L3 in snail</p> Signup and view all the answers

What is the predilection site of Angiostrongylus vasorum?

<p>Pulmonary arteries</p> Signup and view all the answers

What is the pathogenesis of Angiostrongylus vasorum ?

<p>Pulmonary disease and cardiac failure</p> Signup and view all the answers

Both foxes and dogs are usually okay with infection of Angiostrongylus vasorum

<p>False (B)</p> Signup and view all the answers

How do you diagnose a patient with Angiostrongylus vasorum?

<p>Baerman, L1 with kinked tail</p> Signup and view all the answers

Who are the FH for Crenosoma vulpis?

<p>Foxes preferred, older hunting dogs susceptible</p> Signup and view all the answers

What is the PPP for Crenosoma vulpis?

<p>19 days (A)</p> Signup and view all the answers

Where is the predilection site and pathogenesis of Crenosoma vulpis?

<p>Bronchi, dry non productive cough</p> Signup and view all the answers

What is the LC of Crenosoma vulpis?

<p>Indirect, infective L3 in snail</p> Signup and view all the answers

How do you diagnose a patient with Crenosoma vulpis?

<p>Baerman, L1 with STRAIGHT tail</p> Signup and view all the answers

Flashcards

Metastrongyloidea Superfamily - Indirect Life Cycle

Most species in this superfamily have an indirect life cycle, meaning the parasite needs an intermediate host to complete its development.

Metastrongyloidea Superfamily - Intermediate Host

Involves a snail or slug as the intermediate host for the parasite to mature in.

Metastrongyloidea Superfamily - Infective Stage

Infective L3 (larval stage 3) inside the intermediate host is the infectious stage.

Metastrongyloidea Superfamily - Baermann Technique

A diagnostic technique used to detect the parasite eggs and larvae.

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Metastrongyloidea Superfamily - Diagnostic Stage

The L1 stage of the parasite with a hooked tail.

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Muellerius spp - Street Name

Lung worm

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Muellerius spp - Final Host

Shoats (young sheep)

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Muellerius spp - Intermediate Host

Mollusks

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Muellerius spp - Prepatent Period (PPP)

6-10 weeks

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Muellerius spp - Life Cycle (LC)

Indirect, with infective L3 in an intermediate host.

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Muellerius spp - Predilection Site

Lung tissue

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Muellerius spp - Pathogenesis

"Lead shot lungs" due to heavy worm loads.

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Muellerius spp - Diagnosis

Baermann technique to find L1 with kinked tail.

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Parelaphostrongylus - Street Name

Meningeal worm

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Parelaphostrongylus - Final Host

White-tailed deer

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Aberrant Hosts for Parelaphostrongylus

Horses, camels, llamas, and shoats.

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Parelaphostrongylus - Intermediate Host

Mollusks

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